C-8 Correspondence – Miyoko Sakashita
From: Miyoko Sakashita [mailto:[email protected]] Sent: Tuesday, March 21, 2023 3:27 PM
To: CityClerk <[email protected]>
Subject: CBD Sources Part 1.4
-EXTERNAL-
__________________________________________
Miyoko Sakashita
Oceans Director | Senior Counsel
Center for Biological Diversity
1212 Broadway, Suite 800
Oakland, CA 94612
tel. 510-844-7108 | [email protected]
@endangeredocean | Center for Biological Diversity
NATURAL RESOURCES AGENCY _ _ __ _ -- EDMUND G. BROWN, JR., GOVERNOR- 6vi
~
DEPARTMENT OF CONSERVATION
LEGAL OFFICE
801 K STREET • MS 24-03 • SACRAMENTO, CALIFORNIA 95814
PHONE 916/323-6733 • FAX 916/445-9916 • TOD 916/324-2555 • WEB SITE conservation.ca.gov December 1,2011
Mr. David Siders
The Sacramento Bee.
21 00 Q Street
Sacramento, CA 95816
Dear Mr. Siders:
Pursuant to our recent telephone and email communications, enclosed please find a copy of what has previously been referred to as "the spill binder." The records comprising the binder are a non-exhaustive compilation of documents regarding surrace expressions occurring in Kern County during 2011.
Please contact me at (916) 323-6733 if you have any questions regarding this correspondence.
Sincerely,
/" /\._"::"
C~'I ~----
Jame/Pierce
Se~r Staff Counsel
The Department of Conservation's mission is to balance today's needs with tomorrow's challenges andfoster intelligent, sustainable, and efficient use of California 's energy, land, and mineral resources. !it \
,
Department of Conservation
Division of Oil, Gas, and Geothermal Resources
Reports of Occurrence
Surface Expressions in Bakersfield
2011
_ Chevron
6/21/11
From:
Sent:
To:
Subject:
Attachments:
Heidi:
Habel, Rob
Monday, August 29, 2011 11 :58 AM
Jorgenson, Heidi
FW: Chevron - Surface Expression Containment Plans - GS #5 and Well #20 Chevron GS #5 ContainmentJPG; Chevron GS #5 Grading Plan.JPG; Chevron Well #20 Surface Containment M-S.JPG; Chevron Well #20 Containment Plan M-S.JPG This is one of those pieces of data for the assignment.
Rob
From: Ellison, Burt
Sent: Thursday, July 28,20111:22 PM
To: Pierce, James
Cc: Toland, Michael; Habel, Rob
Subject: FW: Chevron - Surface Expression Containment Plans - GS #5 and Well #20 James:
Here'a'rectl'fe'Stl:rematicscof;th~Gt'fevron"~W;el(;2.0"'S'trITm:e:';Eo;¥lt13rnmf!nt~trucwn::·, The Chevron GS # 5 plans or for the SE in the Cymric field.
Please let me know if you need more information.
Sincerely!
Burton R. Ellison
Senior Oil and Gas Engineer
(661) 334-3674
(661) 861-0279 fax
[email protected]
From: Wermiel, Dan
Sent: Thursday, April 14, 201110:55 AM
To: Toland, Michael
Cc: Ellison, Burt
Subject: FW: Chevron - Surface Expression Containment Plans - GS #5 and Well #20 Here are the Chevron engineering plans for containment of surface expressions at the Well #20 at M-S and the GS #5 well at Cymric. The work at the Well #20 was completed by Chevron last week. I hope we can take at look at this on Monday. The work at GS #5 is expected to be completed this summer.
Thanks - Dan
--_._-----
From: Wermiel, Dan
Sent: Tuesday, March 22, 2011 4:25 PM
.. _ .. _I~~_M.iJLe_rLEI~!19j_l:1.'lp_ellKoQ;~~~tLcrTin1;_~ClI~!Cl, )est)'___ ... ____ _ Cc: Adams, Randy
Subject: Chevron - Surface Expression Containment Plans - GS #5 and Well #20 These are the engineering schematics for containment of the surface expressions GS #5 at Cymric and Well #20 at Midway-Sunset. Please let me know if you have any questions.
Thanks - Dan
2 l_
lff, -1:_~li I :,', ~
I I ; I ! I ' j
i II l~
I : j I i~ . :! I I'j!,
I ,. I ~I
,
I -j j Ii;;
. 1 iIi
I
I!!
! j
! i
N)H~u... U.<';:..V;af' I; " ..... ~ .. 1'}~.:F8P:H J1..2ii w
I I,...,
I --c---I-----
)1
!
EARIHI,lDl'<K YOI liMES,
~t~iES:'
I:.ur (CU '~1Ii. l
;'iLL'. (Cll "1lS:")
~1(F{J;ij- -'Jotl~].
... t~d:I.I.er.3"~~t'tm""...r,,,
SIA6r 5 ACTIVITY
. .,
-"l_\S.9!I
-1~4.~
b 3U[L]). .. R'iJ.l.1.IH1U1ER C'f" l.'EST RCiAIN',It-..1S '\i.!\l.L 'AtKnLllln",E:~" lc:-r CUL"ERl'''''~ _'rST
R(T.r~i1NING .WALL
Eo JNSTIIL!. H[-!D t PIPING.
3. GRAV!1Y ;~C" INTO I"T!l SE:CDN,ilAAT
C!lNCRETE C!lHT F< ~ Nl"WT EAS n NS. ,
~
3 5
Mr. Burt Ellison
4800 Stockdale Hwy., Suite 417
Bakersfield, CA 93309-0279
RE: Your E-mail Dated 6/20/2011
API 04-029-23672; MWSS 21S Well #20
Dear Mr. Ellison,
San Joaquin Valley SBU
Chevron North America
Explo'ration and Production
9525 Camino Media
Bakersfield, CA 93311
661-319-4742
DaliasTubbs@chevron,com
Thursday, June 30, 2011
As requested, please find attached, tilt-meter reports for the 10 days preceding the July 21 st incident. Also included are tilt-meter reports for events which have been observed since July 21st. Pertinent data, including date and time of the event are recorded on these reports. .
Please note that the Pinnacle sheets contain their own interpretation of source wells.
These are not Chevron interpretations.
Chevron requests that this information be held confidential by the Division of Oil, Gas and Geothermal Resources.
Best Regards,
Dallas H. Tubbs
Lead Petroleum Engineer
Temblor Thermal Area
MWSS EVENT LOCATOR
EVENT START: 06/13/11 9:25 hrs
EVENT END: 06/14/11 9:30 Ius
Event Fracture Parameters
Depth = 420 ft. Top Diatomite = 378 it Difference = -42 ft Error Bounds = 360' to 465'
Fracture Strike AzimUtl, = 212 deg.
Fracture Dip = 33 deg. NW
Estimated Fracture Diameter = 115 ft.
Growth Cellter Coordinates
NAD27 Easting= 1551795 Northing = 595985
NAD83 Easting= 6113187 Northing = 2236411
NearestWclls Ne~restAbnndoDed Wells
Well Dist.(ft) Well Dist.(ft)
lO2R 13 0 0
Bu1l16R2 86 0 0
Bull16R 97 0 0
Birch 8 100 0 0
BirehB-} III 0 0
Birch 13 127 0 0
Wells Switcbed To Sonk
Well Dist(ft) Well Dlst.(ft) Well Dist.(rt)
Bull 52 454 289 1359
BuU25 593
Cypress'll 1280
Planned Drilling Locutions
Well Dist(ft) Well Dlst.(ft)
H220 401 0 0
H232 513
Notes:
According to daily injection information, this event began two days after the steam start times for TRC wells Bull 52 and Bull 25. Bull 25 was : I removed fTom steam shortly prior to even! termination and well Bull 52 \ was removed from steam shortly after event temunation. Both wells remain as source candidates. This analysis supersedes previously reported results.
I
I • TUnneler Sites j. 598000 i
I
I
x Plnnned Drilling Locations
-+ + Wells
... Abandoned Wells
·1 +
• i +- + -I- i
+ I ++ -I- + :-1' -I-
I
-I- t_l· '1- +
-IT + ++
I . + + " + -1++. ":-1-
+ + -~~~-=r-~--~----~ ·1 +. _ H
-I- I + +' .
-I- +
596500
597500 e Wells in Steam
-I-+ ... EV('".[ltCcntc:r
+ !. + +
--Ar~1
--Ar", 2 + +'
597000 -I.
. ,
-I-
+ +
g .
j 596000
+
1:
Z
595500
,f
595000
594500
+
-I
+ +
+ + +
+ + + '+
+ + -I': -I-• -I + .,+ + .+
+, +
+ of. • , . + -Jr- +
+ +\ +-1-
-I~
+
"1+ ++, +. + + ,
+-t + ." +'
-1+ ."llc-"* +
+
+
+
+~ +
+ +
+
++
+
+
++
594000 I . , " I Ii, 1 " \ I "' i I I
1549250 1549750 1550250 ~5507S0 1551250 1551750 1552250 1552750 1553250 1553750 1554250 Easting (ft.)
MWSS EVENT LOCATOR
EVENT 81' ART: 06117/11 9:00 IllS
EVENT END: 06119111 8:50 11m
Event Fracture Parameters
Depth = 1020 ft. Top Diatomite = 779 ft Difference = -241 ft Error Bouuds = 970' to 1110'
Fracture Strike Azimuth = 266 deg.
Fracture Dip = 8 deg. NW
Estimated Fracture Diameter = 360 ft.
Growth Center Coordinates
NAD27 Easting = 1549703 Northing = 596768
NAD83 Easting = 6111094 Northing = 2237193
Nearest\Velis NearestAlumdoned Wclls
Well Dist.(ft) Well Dist.(H)
427 160 0 0
L350 370 0 0
L320 390 0 0
WID 471 0 0
K330 480 0 0
525 485 0 0
\-Yells On Stcnm
'Veil Dlst. (rt) Well Dist.(ft) Well DIst.(ft)
lO20 585
1200 2397
PlAnued Drilling Locations
Well Dist.(ft) Well DisL(rt)
0 0 0
0 Notes:
This event began and ended concurrently with·the steam start and soak tinles for nearby well K.320. This well was therefore the sOurce of this event TIllS report supersedes previously reported results. ~
598000 T'~---------------------------------------------------------------------------------------------'------------------, 597500
+ + •
+;
597000 . ;
/, .. ,.+,..~ ..... \
I A '
\ .... &~ ,,:
....... __ :.."
596500
+
-I-
+
-I-
.
.j.
, -l
-I-
+ + '1 .,.
-I' -1+
+ •
.,.
r -I-event. ++
L--""-::;::---\:--:'il-~Cj·4t.-:--:·~" • "11 .• ~ +
.~ +
+
-I + +~I_ •
-+ H- +. -'" I
. .".~:",~\
+'("" +.+ +~. '1'
+ '-.... 'f ,+ . ..
K320 was the source ofthis l+
+-
.
-+-1 +
• -I-
+
... :t:
-I-
• ·1
+
-I-
.,.
• Tiltmclcr Siles
x Plnnncd Drilling Locntions
of- Wells
... Abandoned Wells
G WelJ,s. in Steam
A Event Center
--Ar~1
--Arca2
f 596000
+ . .... .• ,~ 1 .,t. + +t. " '~ •
(
"4':" > -I 11- ,. + +>
• + ';1 " .• +' ++ + _ • + ~ + ".
'. 'c' ++ + • -l;- , +-'9, ., + _, >
/ -I- + + + + > /" fl'""- ++ + +
-I- • ".... " : ,,: + + • + +:lI+-lt- it
+
+
'" ,.
595500
+
+ • ·f
595000
594500
·1 ~ .... ~ ,+ +, -1' • , -e,..
+ " ' .,. +r.. +
"'-'-- .j' T+ + +
1 + + -l++ + •
+' . ,. + •
+
t·
+:
+
-I
~ + + + ~
'+"++ ++ 4-1.+
·1 + + + +_j; '"
-Hr
+ • -l +
+ +' + + , + -I- + 1:.
+ +- + + '.' 0<' + j-
, 1- • ·f -~
++ ++
+ +' +
+
+
+ + ++ +
+ .41
4l'
+* .
+ -I.
+
, -'If- '1- +\+
+' +:1:
+t ."ij.
+-+
+
+ J. .+ + -f-! + + +1 + + +
-~ • + +
+
,-l
594000 I I c
1549250 .1.549750 1550250 15507.50 1551250 15517.50 1552250 1552750 1553250 1553750 Easting(ft.)
++
+
+
1554250
MWSS EVENT LOCATOR
EVENT START: 06118/11 9:30hrs
EVENTEND:06/19/l1 15:35 hrs
Event Fracture Parameters
Depth ~ 605 ft. Top Diatomite ~ 540 ft Difference ~ -65 ft Error Bounds ~ 560' to 660'
Fracture Strike Azimuth ~ 179 deg.
Fracture Dip ~ 18 deg. SW
Estimated Fmcture Diameter ~ 140 ft.
Growth Ccotcr Coordinates
NAD27 Easting~ 1551831 Northing ~ 595558
NAD83 Easting ~ 6113223 Northing ~ 2235984
Nellrest,Vells Nearest Abandoned Wells
Well Dist.(rt) Well Dist..(rt)
M190 56 0 0
Bull 52 79 0 0
L200 84 0 0
31 89 0 0
BuU4S 120 0 0
M200 130 0 0
Wells Switched To Soak
Well Diu.(rt) Well Dlst(rt) Well Dist.(rt)
L200 84
K32.0 2156
Phllmed Drilling Locations
Well Dist.(rt) Well -D"<.(ft)
0 0 0 0
Notcs:
Event 2011106118Atemunated at 15:35 hrs on June 19, 2011, concwrent with the steam end time of nearby well L200. This well was the event source. This report supersedes previously reported results. 598000 ~--------------------~-----------------------------------------------------------------------.------------------~ 597500
-I-
597000
596500
i? ..
~ 596000
~
595500
595000
594.500
594000
1.549250
-I-
I
L+
1 + '1- f-
+ I ++ ++ '+ +
I
+ t l_
-I-
®I -I- +-1-
• -I- -1-
-H + +
1+ ~--I-
I +. +
.+ -I- .+
1 -1-'
-I-
i • -I-
, " . I ,. • + •
• Tiltmc:ter Sites
x Pl.annc:d Drilling Locations
+ Wells
+ Abandoned Wells-
G Wells in Steam
.6. Event Center
--Meal
--Area 2.
I + j " +
I
+,+ ++ + •• '\"
I
'.. +++ " • m.~=, I +, • .+" ; 00 was the eve.. .r _ ++. '. + 'Iw."u "'+ ++ ,
' I , +, + I
'+ + • '+ + ~ • ""
+' ,'"+ ~ I~~
I
+ ~++. * <+ '., ++++, "
+
'+, T
+ "+1 + " +
·1 + • + +, <+ .'"+
+ -+ + +' $ • '~++I
+"f- +' I -~-+ • + +' + '- +'
++ + .++++
+;-+: +;T+
,;f _~ + ! +
+ " 'Ie. :
.+ + +f
'+ + + ++ !
++
+
+
1549750 1550250 1550750 1551250 1551750. 1552250 15527.50 1553250 1553750 1554250 Ensting(ft.)
,
; MWSS EVENT LOCATOR
, EVENT START: 06/20/11 18:00 hrs
EVENTEND:06/21/11 1:30hrs
Event Fracture Parameters
Depth = 50 ft. Top Diatomite = 277 ft Difference = +227 ft Fracture Strike Azimuth = 67 deg.
Fracture Dip = 3 deg. SE
Estimated Fracture Diameter = 250 ft.
: Growth Center Coordinates
, NAD27 Easting = 1551790 Northing = 596425
1 NAD83 Easting = 6113181 N01thing = 2236850
i
I NearesnVells Nelu"cstAbnndoned Wells
: Well
i Bu1l3!
II Bull31STI
H225
Bull 10
Bull31R
2"4R
'Veils OIl Stelun
Well Dlst.(ft)
H235 278
024" 317
Birch8R2 344
j Illlnnncd Drilling Locations
'IW'II i 0
,0
i Notes:
Dist.(Ct) Well
52 52
55 79
81 93
Well
" " " " " "
DisL(R)
Dist.(ft) I Well
"
Wcll
! Event termination was observed at 1:25 AM on JUDe 21,2011.
Dist .. (ft)
" " " " " "
Dist.(ft)
------
Dist.(rt)
"
, PresUDlably, no steam changes took place at tillS time. A re-inflation of ! tI,is event occurred at 7:55 AM with ultimate termination at 8:50 AM. , This time correlates to the removal ofH235 from steam. TillS well : remains the best candidate as the source ofthls event. Chevron well 0240 , and TRC Birch-8R2 remain possible contributors to event growth. This report supersedes previously reported results.
I
g
598000 i • Till:mcter Sites
597500
+ +
+
-+ +' +i +
+ + +
597000 ~
+ +
-+ +*
~ +.
596500 -I j.
1-
-I-
+
t i·
.+
+ -+
i
+
++ i
-
+
+
+
l
t'
- -I.
.~ .+ +
.;- + + +
I
x Planned Dnlling Locations
~ Wells
... Abnndoncd Wells
o WeUs in Steam
~ Event Center
--Nco I
--1«",2
1596000
- >1- -1+ + "\-
-I- ·+-i9~ -+ +- + ~l ..,.
++ ++ +
~ -f
, -
;l:
595500
-I-
595000
594500
+ + +~~'-4\~.
-I- 1- + ,+ +c!c
+ -1=1. '.+-G-r
• ++ -\- ++ -l-"'-
-I- + f].-I- +
+ ,-r' -I- + -+ .'\" +- + -H- •
+++ + ;K'+ + +tt
1- +.
+ , \ I' • + + + +
+ +
+ + -I- +
+
+
-I.
+
+.+ + .. + + +t
-I- -I-
-I- -11-
+'.
+
-,~. ,+.
+
+ + +
t -+
-~-
+-
-I
+
t
+ +
+ 1-+ +
,~
- .. +t
+ +
++
.;-
-i:tb ..fl- + +1+
+ '" + :1-
+ + • it. tift . +1+
+ -!.
-+ t +
~ .. -I +1 + +
-t-h • t +
'{.
+ +
++ +
594000 I \ If· I,
1549250 1549750 1550250 1550750 1551250 1551750 1552250 1552750 1553250 1553750 En.!aing(fl.)
+
++
+
+
1554250
MWSS EVENT LOCATOR
EVENT START: 06/22/11 13:45 hrs
EVENT END: 06/24/11 14:30 hrs
Event Fracture Parameters
Depth = 275ft
Error Bounds = 260' to 305'
Fracture Sirike Azimuth = 68 deg.
Fracture Dip = 18 deg. SE
Estimated Fracture Diameter = 160 ft.
Growtb Center Coordinates
NAD27 Easting = 1551942 Northing = 596466
NAD83 Easting = 6113334 Northing = 2236892
I
Nellrest Wells Nearest Abandoned Wells
Well Dld·Cft) Well Dist.(rt)
BuU30R 25 0 0
Bull 30 48 0 0
I
Bu1l31R 83 0 0
Dull 10 88 0 0
Bull 29 91 0 0
Bull 29STl 91 0 0
'Veils 00 Steam
Well Dlst. (ft) Well Dist. Cft) Well DIst.(ft)
F235 324
G240 390
Planned Drilling Locations
Well
o
o
i 10
Notes:
__ L.
DIst.(ft) I Well Di.d.{ft)
o
o
According to daily injection information, this event began two days after Ule steanl start time for Chevron well G240. This well was removed from ! I sleam on 6/23 and remaws Ule best candidate as event initiator. Chevron well F235 was "witched wto steam on 6123 and was removed [TOm steam on 6/26. This well remains the best candidate for continuing event growth. This analysis supersedes previously reported results. __ J
g
598000 I • Tiltmeter Sites
597500
-I-
+ •
+i
597000
,I
-I-
596500 .,.
-I-
-I-
x Planned Drilling Locations
4· Wells
+ Abnndoned Wells
a Wells in Steam
+ + •
+ +.:+ + + :1-
A EVt:llt Ccntc.."t
--"'eal -I-
+ ++. -I- +
-I- 't+ -I- -I- ~ -'
-I- '1' H. -I- • +1 ++ + :-,'
,1: ++++ -1-: -1-. _ .,
-I- .+ -I- + -I-:~''''--'~~._. ,~ ..
'1+ + -I- + I -I- -I- -I®"'(, 4:
+~+ ~. -I- + -~ -l~" -1--1- ·"+0"" *::"'~;;-~~fTl.~:-:l '1 +..+ "'., + .:: -I- -I- +
' • "- c • e ,. " ' . ..., •
Ie ." 1 " • •
event initiator. Chevron well F235 remains the
+ --",,,,,2
Chevron well G240 remains the best candidate as
best candidate for continuing event growth.
-I-
-I-
-I-
-I-
-I--I- .~
-I-
-I-
1596000
' ,. ., .. --- .~',.,,, '., +1'
-I- \~++I. 1j-~+-I- .+++41"+ + • +. / , t ,+ -I- • 1+ -I- +''r + , I ~Jt ++ I + +
-I- -<- I i+ P' +-1- -to -I- + + + .,_
+ '-1 : -I- "-I- of" '"4-" , do + . -I- -I- ",. -I-
+ ... + , , "" -I- -1 '+." -I- +
,+
~
+
595500
595000
594500
+. "'-. -I - -I- '1'":., +. -Jr.
'1' ''',. 1_ +". I + -1-. -I- + -I- -I- , + -+ -1-+ 1'" +. + +; + + + + + + . -I- + + '4" + + , -I-
-1-'
+
+
-I-
+
+ •. j. • +. -I- -I- -I-
~ .-1 -I- -I- + "~L
-I- +-1-. -I- "+-r. .+ -I- + -I- -I- -I-
,- + -I- _:1 -I- + + +
+\ + -I-
-h -I-
+ + +
+
1]'
,-I- .+"*
:+ +
++1- • '1'1 -t4
+ I
~ +f : +1
t, . -I- ~ +:-I-~+
-1--1- -frl
""+ • I -1 1+ L -I-
+). -fl·
+ 'If. -1-+ -I--jJ
'. + +
. + +
-1-':
+
+'
-I'
-1+ .* 4"
+* , ,
+ -I-
-1-+:
,+ -I- 1"-+ + + :t- -I-
-I- -t+ +,
-+~ . +
-I-+
++ +
594000 I I,
1549250 1549750 1550250 1550750 1551250 1551750 1552250 1552750 1553250 1553750 EnSling(fL)
-I-
+-1-
-I-
+
1554250
MWSS EVENT LOCATOR
EVENT START: 06124/11 14:30 hrs
EVENT END: 06/2611 I 9:55 hrs
Event Fracture Parameters
Deptll = 675 ft. Top Diatomite = 356 ft Difference = -319 ft Error BOlDlds = 605' to 785'
Fracture SlrikeAzimuth = 187 deg.
Fracture Dip = 19 deg. NW
Estimated Fracture Diameter = 195 ft.
Growth Center Coordinates
NAD27 Easting = 1551505 Nordling = 596561
NAD83 Easting = 6112896 Northing = 2236986
NearestWells
Well
fU40R
224R
H240
H235
H250R
224
We-Us On Steam
Well
Dist,(rt)
66 73
76 91
111
117
Dist.(rt) (Well
NearestAblmdoJlcd Wells
Well
0 Dist..(ft) IWell
D"l(ft)
Dist.(ft) I ,-..,
5 598000 T'------------------------------------------------------------------------~--------------------_r------------------, +
597500 .,.
+ -I-
+ '. +
+
+ +
597000 .'
+
·i
596500
+
-]-
+-
-1--1- + -]-
,+
-I
+ .-1-
-1-. +-l
'-I-- H- ++ + .
+. +
+
'+
++ '+' + -I- l
-I-
F235 Was the event source.
H260R remains a candidate as a
-I- -I- .j'_ -I- , cc"o"n",t"ri",b"-ut"o,,r.o.' ____________ _ +.+ +.-4~ • +
+' hc~--~~-,-.-~.---~
• -I- :1:- + ,il~ J-lj -t~, ++ + ~- +- +
+ +
-I-
+ +-t • "r -I- ..j ++ -t.r+ -1 + _+
+
• Tilbneter Sites
x Plallllf':d Drilling Lo=tioll.S
Wdls
+ Abandoned Wells
o Wells in Stenm
A Event C.cnter
--Meal
--M'" 2
H260R
Fl.35
226
257 1596000
-I ~\: ~'":~ c + .1, 1'.'" .,._ ~++ _). -c + -I- +
+. . +. ~: \ .~ .• + * ++-j.!:j. +.:f:+ .. +1. -I- .fl· -I- I' ;. 4 •
i+ -I /' ,+:'-Jt _,_"+._1;-+ +"lj;.f + -+-, +
• + :. + ! P- -I- ++ -I- + -I- + . ++ + -I- +
Planned Drilling Locution! :J
Well
o
Dist.(rt) I Well Dist.(ft)
o 0 0
o 0
Notes:
This event began Olle day after nearby Chevron well F235 was switched into steam and ended concnrrently with lbe soak time for this well. F235 was therefore the Source of this event. H260R remains a candidate as a contributor to event growth. This report supersedes previously reported results.
~
-I-
595500
+
595000
594500
+ • I \ -1-!+ + .; + +~_ + -f .;1-
+ +, ~_ + _1+ .+ + + -1 .. -I- • ~ \ __
,.. +- .'1,,-.1. ~ + +- + .~" -I- otf ~!.. i~
I -]. .: .+ -+ +4- -I- + +- + -It
-I- ~ '. -I of + --I- -l + -Ie!- •
+ • t +- + 4- - • +-1- + + -I-
+ .+ +TI
-1- •
-I-
. \ " -/- -,+
+ ++
.,
+ + -I
,-• + -I-
+
+
+
-I- + -I- _~ ,,-+ + -I- -r- + -I--t +
-: _,:' -I- 4"-t -+ -I- -l + + -I· -I- +_.
+ -I- .-1-1- ~+ t +
+
'tf-+ -I-
+-
-Jr.
-1-.
++
$ •
-I-
+/
+
+
-I-
.* 4-
+40
+ +-
+ + + ++- •
* -Ho
+
-4,.. -j~ + + H
+ 'It +* ,+ .t
"" +1, +-1-
-+- -<.
"' +\ .+
-I-
+ + +
t • +
'l-
+ +
~ -1- -I-
-+-
+
594000 I I,
1549250 1549750 1550250 1550750 1551250 1551750 J552250 1552750 1553250 1553750 Easting(O:.)
+
+-1-
+
+
1554250
MWSS EVENT LOCATOR
EVENT START: 06/26/11 9:45 hrs
EVENTEND:06/27/11 15:301",
Event.Fracture Parameters
Depth = 880 ft. Top Diatomite = 811 ft Difference ~ -69 ft Error Bounds = 820' to 950'
Fracture Strike Azimuth = 63 deg.
Fracture Dip = 19 deg. SE
Estimated Fracture Diameter = 205 ft.
Growth Center Coordinates
NAD27 Easting = 1550363 Northing = 596725
NAD83 Easting= 6111755 Northing = 2237151
NearestWcll.'l Ne.nrestAbandoned Wells
Well Dlst.(ft) Wen Dis'-(ft)
L300 71 0 0
L310 86 0 0
L305 93 0 0
282 98 0 0
1300 176 0 0
M310 199 0 0
Wells Switched To Soak
Well Dist.(ft) Well Dist.(ft) Well Dist.(rt)
L300 71
1270 672
Plallned Drilliug LotaUons
Well D~'-(ft) Well Dlst.(ft)
0 0 0 0
0 0 0 0
0 0 0 0
I 'Notes:
gWOO I
I
I
I· [
·1+ .1+ -I- ~
597500
+- -1-
~ , +
-I-
-I-
·t I ·1·-1- -I- I
-j- + -j':+ ,~
-I, -I -I- ,+ _I:I __ I~-I- . 1-1-+ +.+L-,r------------' . _·t', _1:1 + -1-+ +j.rlj"+,·-,,,-,,~ ~
.r1- \. + -I- + -I- + ".I,., .1, ,~ 1" + ®l. i~! -+ +-,~ :F I- '--- -I- '11 \+- -;. 1.
+- .+ -1-. ,+.+;I~+! ++
~ """~ "1 + + ib '4 • + '[ "'''l-~~ 11, ·+-11- - +- . + + -I- .J • + +. +.. + + of+ -#-~~ of+
~l . ~." • ..J,,,,,. 41- -11-' .~, • .11 I /_._" -I-"" I- -,I. + +., + '~' :i: + -I- .-1- -lc -I- -'+'4+ + •.• + ;:r.+ ++
-I- '-+ /1 '~I-,+ + • -H + '+-l>,. +
-I- I. .+ rJ-"h' +o. -1-_, + • I' -I -+ + +'
I· . 'I" -~ "0; +- -I" I -I
·f ''9"" ' ·f -+ -I- +
-I - I......... + -I 'j + OJ-
I "'" -I- _1.4'+++
1 + ,j + +
g
f 596000 -
+
Of;
-I-
+ -I- ;-
597000
596500
595500
+
+
,.
+
+
+ +
-t+ ~ il•
+ +- +
++ -1,-1
,t
+ -!f
+
~-r ':\-
:17
• Tilunctcr Sites
x Planned Drilling Locations
+ Wells
"+ Abnndoncd Wells
G Wells in Steam
A EVenl Cenler
--Areal
--Ar~2
+ • + t,~
+i .+. ~+ + + -I .+++
'I + -I' f. + + 1 o. ... .1" ' , + + -I- -I.
+ •
+ -I++ t·
+ +
-1--++ ~
-I-
- + + + -I-
+ +. of + -I
+ + -I-
+ 4"" +
.,.:1 -I-
+-i:J. , , .
According to daily injection infonnatioD, this event began shortly after 595000 -f + + + \ -N -I- •
++ + ~- .
* .
"\ +f +-. -1
1 +
".,. -t.t
~_+ .1-nearby Chevron well L300 was put into steam and ended concurrent to the, soak time for this well. Therefore, well L300 was there source for this event. T11is analysis supersedes previously reported results. -rj_+ , -I-
-lj.
,.
+ -; +
I ?· i" +
-t~I_ ,* 41-594500
-I-
+-
·1·
+-1
\, +h
, ++ +
-t i. .+ + +
~
,.
+ +
+* t~ . . +
-I' + I·
+'
594000 I II J •
1549250 1549750 1550250 15.50750 1551250 1551750 1552250 1552750 1553250 1553750 1554250 Easting(n.)
Jorgenson. Heidi
From: Habel, Rob
\Sent:
To:
Monday, August 29, 2011 11 :57 AM
Jorgenson, Heidi
Subject:
Attachments:
FW: Chevron's surface expression near well 20
County of Kern Public Online Mapping.pdf
Heidi:
This is one of those pieces of data for the assignment.
Rob
From: Ellisonr Burt
Sent: WednesdaYr July 06r 2011 11:41 AM
To: Habel, Rob
Cc: Toland r Michael
Subject: RE: Chevron's surface expression near well 20
Rob:
I researched our records/database as well as old aerial photos to determine the age of the SE at well 20. Here is what I found:
1) DOGGR's first inspection was done on 2-16-10 by S, Nasiatka. 2) Spill report by CUSA of a surfa,ce expression on 9-27-2010. Spill report taken by A. Lagunzad. 3) A review of aerial photos from Kern County's GIS site show the SE to be present in 2008 photos (see attached) but not in the 2006 photos.
From what I can tell, the SE at well 20 is at least 4 years old.
Please let me know if you need more information.
Sincerely,
Burton R. Ellison
Senior Oil and Gas Engineer
(661) 334-3674
(661) 861-0279 fax
[email protected]
From: Habelr Rob
Sent: TuesdaYr July 05r 2011 5:29 PM
To: Ellisonr Burt
) Cc: Toland r Michael
Subject: Chevron's surface expression near well 20
1 r
---REPURT-OF-O-C-CORRE NeE-TYree---· -_····---Date--Tr::S-=-rr- LOCATION Midway-Sunset
Operator Chevron Representative Dallas Tubbs Phone 661-762-6427 Occurrence Detected November 8 ,2011 morning am/pm
month, day year
Occurrence Ended Ongoing , --- am/pm
month, day year
Field Midway-Sunset Sec., T., R. 21 32S/23E Lease and Well Section 21 Other Location Description: Well 20 surface ·expression crater.
O.E.S. Notified? (toll-free number: 800-852-7550)
DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Dallas Tubbs, Chevron Lead Petroleum Engineer, 661-762-6427
bbls oil; bbls water Volume of Spill Undetermined
Areal Extent 70'X40" & 50'x40'
-------------
Property or Waterways Damaged or Threatened N/A
Weather and Sea Conditions (Offshore Spills Only) N/A
Injuries N/A
Source and Cause of Occurrence Collapse of the well 20 surface expression crater due to erosion, allowing fluid from within the . crater to flow and spread onto terrace below.
Containment and Cleanup Cleim-up not possible due to Cal-OSHA work site restriction for the surrounding area.
Operator Plans to Prevent Reoccurrence At present, unable to control the flow of fluid from the surface expression crater.
Remedial work and investigative excavation to begin once Chevron's work site safety plan is approved by Cal-OSHA Estimate of Property Damage (dollar loss) or Cleanup Cost -----------------------
Additional Information At the time of site visit, fluid was steadily streaming down the surface expression crater slope from a ..
reservoir of fluid from within the crater. Continuous and intense bubbling of fluid was observed from within the crater. Additional slope area of the crater is at risk of collapse with the potential release of fluid.
Note: The flow of fluid from the TRC Bull 9 surface expression was observed also to have increased. The Bull 9 surface expression is located approximately 350' northeast of the Chevron Well 20 surface expression. (Use reverse side if additional space is needed.)
Report Prepared bY.......:.cM.:.:.ic.:.:.h.:.::a.:.::e.:...1 T-'-o.:..;l.:c.a;..:.nd"'--______________________________ Date 11-10-11 OG184 (3/98)
;r
·-REPORT-OF~OCCURRENCE-.rrP'~.g1Q. Date 6/22/11
Operator TRC Representative Bill Davidson
----------------------
Occurrence Detected __ ""Ju""n...,e'-;f:2""2:'-______ , 2011 month, day year
0600 am/pm
Occurrence Ended June 22 , 2011 am/pm
month, day year
-----
LOCATION Midway-Sunset
Phone 661-616-8680
- ---- .. _--
. Field Midway-Sunset Sec" T., R. 22 32S/23E Lease and Well "Bull" 9 & "Birch" 10R Other Location Description Near the lease boundary with Chevron, approximately 300 yards from Chevron's surface expression at well number 20 on section 21, and the June 21,2011 fatal accident.
O.E.S. Notified? Yes 11-3797 (toll-free number: 800-852-7550) DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Bill Davidson, TRC Safety Director, 616-8680, 1025hrs Volume of Spill 500bbls fluid ,1
st
24 hrs bbls oil; 90 to 95% water bbls water
~~--~~--------------
Areal Extent Fluid from surface expression covered two areas. The actual surface expression is near well 'Bull" 9, it covered an area approx. 20'x30'. Fluid flowed to next terrace down and covered an area of approx. 40'x50', near well "Birch" 10R Property or Waterways Damaged or Threatened NIA
Weather and Sea Conditions (Offshore Spills Only) N/A
Injuries N/A
--------------------~------------------------------------------------------------- Source and Cause of Occurrence Steam injection into shallow diatomite reservoir resulting in surface break through of steam, water and oil.
Containment and Cleanup Berms have been placed around both areas. Vacuum trucks are removing fluid as needed. The 15t 24 hours approximately 500 bbls of fluid were removed. The 2nd 24 hours approximately 150 bbls of fluid have been removed. 5 to 10% of the fluid is estimated to be oil.
Operator Plans to Prevent Reoccurrence Under routine cyclic steam schedule, steam injection had been shut-in the day before the expression occurred. Steam injection will not resume until SE fluid ceases. Steam inj. will be brought back slowly and monitored Estimate of Property Damage (dollar loss) or Cleanup Cost Additionallnformation This surface expression is located in the middle of14 cyclic steam injection wells. The wells are currently on flow back under scheduled maintenance. It was reported that the surface expression surfaced and spread within a few minutes. (Use reverse side If additional space is needed.)
Report Prepared by Michael Toland Date 6/24/11
--~~--~~------~---------------------------
OG184 (3/98)
REPORT OF OCCURRENCE TYPE C Date 10-11-11
LOCATION Midway-Sunset
Operator TRC Representative Todd Rogers Phone 661-763-5028 Occurrence Detected October 11 , 2011 ~ am/pm
month, day year
Occurrence Ended Ongoing as of 10-12 , 2011 am/pm
month, day year
Field Midway-Sunset Sec" T., R. 22 T32S/R23E Lease and Well Birch and Bull leases Other Location Description . Area along lease boundary between TRC and Chevron, east of Chevron's well 20 surface expression.
O.E.S. Notified? 11-6065 (toll-free number: 800-852-7550) ------------------
DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Occurrence noticed during regular inspection of area surface expressions. Incident was not reported to Cal EMA by TRC until after DOGGR made contact with TRC supervisor.
Volume of Spill Approximately 5 bbls
Areal Extent Approximately 200' x 40'
bbls oil; Approximately 50 bbls
Property or Waterways Damaged or Threatened
bbls water
--------------------~------------------------~
Weather and Sea Conditions (Offshore Spills Only) N/A
Injuries N/A
------~--------------------------------------------------------------------------- Source and Cause of Occurrence Excavation of trench by TRC to connect two TRC surface expressi.on sites, combined with coincidental increase in activity at Chevron's well 20 surface expression ,as evident by a tilt meter event on October 10 located at Chevron's well 20 surface expression and the increase in steam emitting from the surface expressioncrafer.
Containment and Cleanup Backhoe and vacuum truck.
Operator Plans to Prevent Reoccurrence Area to be bermed and fluid to be siphoned offfor processing ..
Estimate of Property Damage (dollar loss) or Cleanup Cost ~-------------------------
Additional Information Between 10pmand 10am on,October 9th and 10th ; Chevron well 20 surface expression experienced a tilt meter event with a increased amount of steam rising from the surface expression crater. On October 10, TRC began excavation to connect two surface expressions on their side of the lease line. The older of these two these two surface expressions is being drained by gravity into poly line .to a processing tank. Connection to· the 2 nd
newer surface expression would allow it also to be
drained by gravity instead of pooling Cjt the base of a slope and being subject to washout by rainwater. During the night after the day of excavation by TRC ,and most likely due to the coincidental increase in activity at the well 20 surface expression and surrounding area, the excavated trench overflowed with fluid that effected the surrounding location. Of significance is tilt information ;received from Chevron showing a PXP area just outside of the 800' steam injection restriction radius that experienced a high level of uplift between October 6 -10. This could possibly be evidence of injected steam outside of the 800' restrictive radius having an effect all the Chevron well 20 surface Gxpres:3ion and surrounding area. (Use reverse side if additional space is needed.)
Report Prepared by __ M_i_c,-ha_e_I_T-=o_la~ll-=d,--_________________________________ Date 10-12-11
-------'----':..-----...:..!--.----
I " "
County of ~ern Public Onl,,"~," .... pping
I
Sc:ale: 1:~ ®' Map Tool:" i~ pOlygo~ 'Hark~p ActIve Layer: 11: NO ACTIVE LAYER "" i
http://maps":co.kem.ca.uslimU"tmfjsp?site,,,km....vub[7/6t2011 11 :26:25 AM] This toot allows you to draw a polygon on top of the
map. The toot also reports the positions of the points of the polygon, the dIstance between eac:h point,. as well as the total area and perimiter of the polygon.
1190 30' 0.5· w
35'" 7' 43.6" N
119° 30' l.B" W
35'" 7' -43.2""N
32.8 m
119" 30' 2.0n W
35° 7' -42.-4" N
26.0 m
119
D
30' 1.1" W
35° 7' -42.0" N
25.0 m
119'" 30' 0.2~ W
35° 7' 42.2" N
233m
119D 30' 0.1" W
35° 7' 43.1" N
26.B m
185m
152.4 m
1,651.7sq. m
I ~.';tiraobt>qlygoii~:~1 )+J:Clear:f;'olnbl 1: I
r;::~=;:~"-G~-~t;;~
· . ~"~~~~::"Cfie-vron --"===~---
8/5/11
Jorgenson, Heidi
From:
Sent:
To:
Subject:
Attachments:
Heidi:
Habel, Rob
Monday, August 29,2011 11 :59 AM
Jorgenson, Heidi
FW:
Chevron Sec 21 Well 20 SE 8-5-11 014.jpg; Chevron Sec 21 Well 20 SE 8-5-11 007.jpg; Chevron Sec 21 Well 20 SE 8-5-11 003.jpg; Chevron Sec 21 Well 20 SE 8-5-11 011.jpg; Chevron Sec 21 Well 20 SE 8-5-11 008.jpg; Chevron Sec 21 Well 20 SE 8-5-11 010.jpg This is one ofthose pieces of data forthe assignment.
Rob
From: Toland, Michael
Sent: Friday; August 05, 2011 3:30 PM
To: Miller, Elena; Habel, Rob
Cc: Jaszarowski, Joyce; Kustic, Tim; Ellison, Burt; Wermiel, Dan Subject:
Elena,
Attached are photographs of the effects of the "eruption" that occurred in the during the night of August 5 at the Chevron well 20 surface expression site. The expelled material is from the crater that formed after the June 21 accident.
A report \Alii I follow, but a few facts are:
A 5' radius surface expression 40' northeast was reported on August 3.
Tilt meter events in the area were recently recorded.
Chevron reportedly has had a 900' radius restriction around the sight.
TRC wells have reportedly been on steam injection recently near the location.
Spray and rocks up to 6" in diameter were expelled from the crater as far as approximately 50 yards away.
Chevron attorney Christy Marquez called this afternoon requesting ali immediate restriction on steam injection forTRC wells near the crater location.
The current 150' radius restriction on TRC wells would not include some wells near the crater location.
TRC has not reported this week any surface expression activity on their property, which has been considerable.
Michael Toland
Facilities Program Engineer
Department of Conservation
Division of Oil, Gas and Geothermal Resources
District 4
661-334-3662
1 ~-- -------------- -- -Ghe v 1'"0 1'1--- -~ ---
8/17/11
Jorgenson, Heidi
From: Habel, Rob
Sent:
} To:
Monday, August 29, 2011 12:11 PM
Jorgenson, Heidi
Subject: FW: Eruptive Activity at Chevron's Well 20 Surface Expression Site- 8/17/11 Heidi:
This is one of those pieces of data for the assignment.
Rob
From: Toland, Michael
Sent: Wednesday, August 17, 2011 1:06 PM
To: Habel, Rob; Kustic, Tim
----~--------. -~--.-----------------~---~-
Cc: Ellison, Burt; Jaszarowski, Joyce; Glinzak, Mike; Wermiel, Dan Subject: Eruptive Activity at Chevron's Well 20 Surface Expression Site- 8/17/11 Chevron Operations Supervisor Bob Allen reported that at 1010 hrs this morning another eruption occurred at the well 20 surface expression/fatality accident site crater. This eruption was described as significantly larger than the one that occurred on August 5 and sent fluid approximately 100' high, with steam vapor even higher. The radius offluid spray is possibly up to 70 to 80 yards distant from the crater.
Both TRC and Chevron have had wells on steam injection. The TRC well is 640' away and was taken off injection when the eruption occurred, but according to Mr. Allen may be put back on injection. The two Chevron wells are 766' and 988' away from the eruption site. The well at 766' was shut in at 930 hrs this morning on a normal cycle schedule. The well at 988' is still on injection. Chevron has the area restricted.
An item of interest, we recently learned, is a Chevron directional well that has its surface location south of the well 20 surface expression site, but runs north along the Chevron/TRC lease line to near the well 20 site. Although its purpose is to act as a French drain for steam and fluid, it is possible that it also could act a conduit for steam and fluid to the well 20 site from both Chevron and TRC steam injection wells.
Due to this recent volatile activity at the well 20 site, District 4 is recommending 1000' radius steam injection restriction around this location in the form of an emergency formal order to both Chevron and TRC. We are available to supply any technical information to support an order.
Michael Toland·
Facilities Program Engineer
Department of Conservation
Division of Oil, Gas and Geothermal Resources
District 4
661-334-3662
1 REE-ORIOFOCCURRENCE--IYPJ;C_____D~lEL. 8~JZ-JJ ___ _
Operator Chevron
----------------------
Occurrence Detected August 17
month, day
Occurrence Ended See Comments
month, day
Field Midway-Sunset
LOCATION Sec 21 T32S/23E
Representative Bob Allen Phone 768-3636
, 2011 ; 1010hr am/pm
year
--'-:"y""'ea:::-r - , --- am/pm
Sec" T" R, 21 T32S/R23E Lease and Well
Other Location Description A large crater that formed after the June 21, 2011 fatality accident near the well 20 surface expression, Crater is approximately 30' to 40' south of well K210.
O.E.S. Notified? (toll-free number: 800-852-7550)
-----------------
DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Bob Allen, Chevron Operations Supervisor, 768-3636, 1130 hrs Volume of Spill 20-25 bbls fluid bbls oil; bbls water
-----------------------
Areal Extent 200' x 120' from expelled and flowing fluid, Fluid expelled approx. 100' vertically, steam vapor plume to possibly 200'or higher.
Property or Waterways Damaged or Threatened N/A
Weather and Sea Conditions (Offshore Spills Only) N/A
------------------------------------------------------- Injuries N/A
----------------------------------------------------------------------------------- Source and Cause of Occurrence Injection of steam above formation fracture gradient into shallow diatomite reservoir, Subsurface pressure builds from injected steam and pressurized formation fluid. Fracture pathways form to allow the release of steam, oil and water to the surface.
Containment and Cleanup To be determined after safety and stability of area is confirmed.
Operator Plans to Prevent Reoccurrence Restriction of steam operations within a radius of the surface expression site, Estimate of Property Damage (dollar loss) or Cleanup Cost --------------
Additional Information
A 500' radius restriction of steam injection from this event location was in place since the August 5 site eruption for both Chevron and TRC, The nearest wells Chevron reportedly had on injection prior to August 1 yth event were at 766' and 988' distance. It is not known how many Chevron wells were on injection beyond a 1000' TRC reportedly had 5 wells on injection at distances of 561' to 720' and 3 wells injecting at a distance of750' t01000'. PXP had six wells between 880' and 1150' distance on injection, Onsite field personnel reported ground trembling and that the eruptive event lasting approximately 15 to 20 seconds, Aerial steam was observed by Mr. Allen driving to the site from over the hill on Mid-Oil shortly after the event was reported by onsite personnel. A considerable amount of steam was observed by DOGGR on August 18 emitting from the crater that appeared to be an estimated 12' t015' in diameter. The activity of the smaller surface expression near the crater, reported on August 3, also increased, allowing approximately 5-10 bbls of fluid to the surface. Mr. Allen was onsite the moming of August 18 during the DOGGR visitto the site, (Use reverse side If additional space Is needed.)
Report Prepared by Michael Toland Date 8-19-11
~~~~~~-----------------------------------
OG184 (3/9S)
con ............ :::r
N ro lT1 .,
............ <
~ 0
~ ::J
----·-------------~-------------~-----REPeR"f-eF-eGGURR ENG-E -----Typ~-G!Q --------Qate--10~19-11--- LOCATION Midway-Sunset
Operator Chevron Representative Bob Allen Phone 661-768-3636 ---------------------- ~--------------- --------------------- Occurrence Detected October 14
month, day
Occurrence Ended ----'O""n'-"g;j.>o"-!Jin~g~------
month, day
Field Midway-Sunset
2011
year
year
am/pm
am/pm
Sec" T"R, 21 32S/23E Lease arid Well Section 21
Other Location Description Chevron well 20 surface expression / subsurface containment structure O.E.S. Notified?' (toll-free number: 800-852-7550)
DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Event witnessed by DOGGR during routine area visit.
Volume of Spill bbls oil; bbls water ------------------- ---------------------- Areal Extent 250-300 bblsfday of fluid. Approximately 40' x 70' Fluid released is 99% water.
Property or Waterways Damaged or Threatened N/A
-------------------------------------------------~
Weather and Sea Conditions (Offshore Spills Only) NfA
Injuries N/A
------------------------------------------------------------------------------ Source and Cause of Occurrence Injection of steam above formation fracture gradient into shallow diatomite reservoir forcing steam and fluid through fractures to the surface. A subsurface containment structure was placed to capture fluid flowing to this area. Pumps designed to remove fluid from containment structure have been inoperative since mid July.
Containment and Cleanup Area is restricted to employee access by CalOSHA Fluid is being siphoned away from surface expression location through a 4" PVC pipe via vacuum truck.
Operator Plans to Prevent Reoccurrence Complete clean-up or remedial work is not expected until CalOSHA approves a Chevron site safety plan and employee entry is allowed.
Estimate of Property Damage (dollar loss) or Cleanup Cost Additionallnformation On October 14 fluid began to surface from the subsurface containment vessel place to capture fluid from the well 20 surface expression. The linear rod pumps to remove this fluid from the vessel have been inoperative since mid July and access restriction to the site has prevented repair. Fluid had been removed from the containment structure by vacuum truck until . the August eruptions, after which the fluid flow the area virtually ceased.
Silice October 14 approximately 250~300 bbls. f day of fluid have been flowing to surface from the containment structure and is being removed from the surface by a 4" PVC pipe that was extended into the area and connected to a vacuum truck. The amount of steam coming from the well 20 surface expression crater reportedly increased significantly on October 15 and 16.
The amount of steam observed from the crater on October 19 was considered to be average. (Use reverse side if additional space Is needed.)
Report Prepared bY-------,-,Mc:.:.ic.=h.:.::a:..::e.:...1 T.:...o::.:l=an:.:.:d=--_________________ Date 10/20/11 OG184 (3/98)
-REROR'T-OFOCCURRENCE IJ'PE __ CID ____ Q?te 6/21/11
Operator Berry Petroleum Representative Chuck Jaster
Occurrence Detected_J=-:u"""n",,,ew2~1,--___ , 2011
month, day year
Occurrence Ended ---'J ... u...,n"'-e-=2w.1 _____ , 2011 month, day year
; 0500hr am/pm
am/pm
LOCATION Midway-Sunset
Phone 213-7515
Field Midway-Sunset Sec" T" R. 2 31/22 Lease and Well Southwestem -------- Other Location Description Gage Setting 6, 2nd Reactivation of surface expression #24 O,E.S, Notified? Conjunction wi 11-3705 (toll-free number: 800-852-7550) , DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Chuck Jaster, Berry Employee, 213-7515, 0900hrs Volume of Spill < 1 bbl bbls oil; bbls water ---------------- ------------ Areal Extent 40 cu yds of formation material including oil, An 8 ft. cone formed, Spray from the event covered an area of approximately 200' x 300'
Property or W,aterways Damaged or Threatened N/A
------------------------------
Weather and Sea Conditions (Offshore Spills Only) N/A
Injuries N/A
-----------------------------------------------------------------------Source and Cause of Occurrence Steam injection into shallow diatomite reservoir resulting in surface break through of steam and formation mud. Surface expression activity ceased several hours after steam shut-in.
Containment and Cleanup Area bermed to minimize spread of formation mUd. Material will be removed once it is determined it is safe to do so. The spray material along the slope will probably be left in place.
Operator Plans to Prevent Reoccurrence Four steam injection wells shut in until mechanical integrity of casing can be determined, Well numbers; 47-39, 46-40, 48-42 and 49-41.
Estimate of Property Damage (dollar loss) or Cleanup Cost -----------
Additional Information Photos Attached
~~~~~~~--------------------------------
This is the 2
nd
reactivation of this surface expression within a week. The original surface expression occurred approximately one year ago. 4 injection wells that have the potential of being responsible for this surface expression are located nearby on the excavated terrace above the surface expression site. After the 1st reactivation limited steam resumed and by a process of elimination, Berry has narrowed the number of responSible wells to two. Steam injection will not resume in this area until mechanical integrity has been confirmed on these two wells. Production around this surface expression continues, the casing and pumping units evidently not affected by the underground movement of material or the spray of formation mud. The wo wells could be turned off manually, but for safety reasons personnel are not allowed onto the location. Since remotely shutting down production to this area would also include many other wells outside of this immediate area, Berry has made the decision not to do so. (Use reverse side If additional space Is needed.)
Report Prepared bY--=.:,M:.:.:ic::..h:.;:a-=.e:...-1 T:...::o:.:.:la:::.n:.;:d~ ___________________________ Date 6/24/11 OG184 (3/98)
REPeR~-OFGGGURRENGE--· TY~E __ DD______Date __ B/21/1J ..
LOCATION Midway-Sunset
Operator Berry Petroleum Representative Chuck Jaster Phone 213-7515 Occurrence Detected_""Ju"-'n'->ew2=-1'--___ , 2011 ; 0500hr am/pm month. day year
Occurrence Ended _____ J""ucun><.e-=2...,.1-;-____ , 2011 month. day year
am/pm
Field Midway-Sunset Sec., T., R. 2 31/22 Lease and Well Southwestem Other Location Description Gage Setting 9, Surface expression #33, located on the terrace directly below surface expression #24 O.E.S. Notified? 11-3705 (toll-free number: 800-852-7550) -----------DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Chuck Jaster, Berry Employee, 213-7515, 0900hrs Volume of Spill· < 1 bbl bbls oil; bbls water ---------- ---------------- Areal Extent 2-3 cu yds offormation material including oil. Spray from expression effected an area approx. 40' x 70' Property orWaterways Damaged or Threatened N/A
Weather and Sea Conditions (Offshore Spills Only) N/A
Injuries N/A
---------------------------~------------------------------------ Source and Cause of Occurrence Steam injection into shallow diatomite reservoir resulting in surface break through of steam, formation mud and oil. Surface expression activity ceased several hours after steam shut-in.
Containment and Cleanup Formation mud has dried. Material will be removed once it is determined it is safe to do so.
Operator Plans to Prevent Reoccurrence 4 steam injection wells shut in. Injection to resume after determination of which injection well(s) responsible for surface expression by mechanical integrity inspection. Well numbers; 47-39, 46-40, 48-42 and 49-41 Estimate of Property Damage (dollar loss) or Cleanup Cost ---------
Additionallnformation Photos Attached
------------------------------------------------------
This small surface expression.occurred in conjunction with the larger 2nd reactivation of surface expression #24. It was given a new number because of its location on the terrace below the reactivation. One of the photos shows the slope of the terrace with the reactivation cone on the left and the new surface expression at the base of the slope. The area around the new surface expression is restricted.
(Use reverse side If additional space is needed.)
Report Prepared by--:.;.M.:.:cic::.:..h:.:;;a.:;.cel'-'Tc..:0.;.::la::.:..n:.:;;d __________________ Date 6-24-11 OG1 B4 (3/9S)
-REP-OR"f~O~OCCURRENCE- _JY2E:_C/P____ _ Dat(3 __ §1f611L _~ _____ _ LOCATION Midway-Sunset
Operator Berry Petroleum Representative Greg Juengst Phone 340-6928 \ Occurrence Detected_",Ju",n"",e,::,2~6,-___ , 2011
month, day year
;0420hr am/pm
Occurrence Ended June 26 , 2011 ;0900hr am/pm
month, day year
Field Midway-Sunset Sec., T., R. 2 T31S/R23E Lease and Well Southwestern Other Location Description Near southwestern well 52-36. This well is for reference only, it is not been cYclically steamed this year.
O.E.S. Notified? 11-3825 (toll-free number: 800-852-7550) DOGGR Notified by (Name, Affiliation, Phone Number, and Time) Greg Juengst, Berry Employee, 768-4554,0740 hrs Volume of Spill +-14 bbls
--~~-------
bbls oil; +-36 bbls bbls water.
Areal Extent Fluid 120' x 20', Spray approximately 120' x 60" Property or Waterways Damaged or Threatened N/A
Weather and Sea Conditions (Offshore Spills Only) N/A
--------------------~---------
Injuries N/A.
-------------------------------------------
Source and Cause of Occurrence Steam injection into shallow diatomite reservoir resulting in surface break through of water and oil.
Containment and Cleanup Oily soil to be removed and taken to mixing pad. Sight is not currently accessible for safety reasons.
Operator Plans to Prevent Reoccurrence Review cyclic steam operations. Additional wells shut-in.
Estimate of Property Damage (dollar loss) or Cleanup Cost ----------------
Additionallnformation This is the third reactivation ·of this surface expression in two weeks. Each reactivation has been more volatile than the previous. Cobble size fragments were expelled. Fluid was released 3 times in 4 hours.
Dayne Frary received call at 0740 hrs and expected the sight at 0900 hrs. (Use reverse side If additional space Is needed.)
Report Prepared by Dayne Frary & Michael Toland Date 6/26/11 & 6/28/11