Post on 02-Jan-2016
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PACIFIC OPERATORS OFFSHORE, INC.
CARPINTERIA FIELD
CARPINTERIA FIELDOFFSHORE CALIFORNIA
(Reprinted in Sylvester and Brown, 1997, Coast Geological Society)
Platform HoganPlatform Houchin
RINCON TRENDSTRUCTURE CONTOURS
OCS-P 0240 OCS-P 0166
Cal. PRC 7911
Cal. PRC 3133
Cal. PRC 4000
HENRYHOUCHIN
HOGAN
HOPEHEIDI
AREA OF INITIALREDEVELOPMENT
CARPINTERIA OFFSHORE FIELD
3-D MODEL OF CARPINTERIA FIELDVIEW LOOKS NORTHEAST
3-D MODEL SHOWING HOBSON FAULTVIEW LOOKS SOUTHEAST
LONGITUDINAL SECTION THROUGH
CAPRINTERIA FIELD
WEST EASTPLATFORM HOGAN
PLATFORM HOGAN
PLATFORM HOUCHIN
STRUCTURE CONTOURS ON TOP F1 ZONECONTOUR INTERVAL 100 FT
OCS-P 0166
PRC 4000
PRC 7911
VENTURA BASINSTRATIGRAPHIC COLUMN
SH
OW
SS
HO
WS
PRODUCEDPRODUCED
MA
IN P
RO
DU
CT
IVE
IN
TE
RV
AL
MA
IN P
RO
DU
CT
IVE
IN
TE
RV
AL
SE
CT
ION
PE
NE
TR
AT
ED
AT
CA
RP
INT
ER
IA F
IEL
D
PL
EIS
TO
CE
NE
PL
IOC
EN
EM
IOC
EN
E
OL
IG.
EO
CE
NE
UK
“F” S
ER
IES
“G” S
ER
IES
“E” S
ER
IES
PLATFORM HOGAN
CARPINTERIA FIELD TYPE LOG
PLATFORM HOGAN
10000
100000
1000000
Jun-6
8
Jun-7
0
Jun-7
2
Jun-7
4
Jun-7
6
Jun-7
8
Jun-8
0
Jun-8
2
Jun-8
4
Jun-8
6
Jun-8
8
Jun-9
0
LO
GA
RIT
HM
IC P
RO
DU
CT
ION
(B
bls
/mo
)
OIL
WATER
PURCHASE BY SIGNAL18,738 Bbl/mo
July, 1990
PEAK PRODUCTION403,934 Bbl/moOctober, 1968
HOGAN MONTHLY PRODUCTION BEFORE PURCHASE
OPPORTUNITIES
Workovers
Continue conversion from gas lift to rod pumps
Waterflood
by 1993…. Strategic redrilling
GEOLOGIC CHALLENGES
Co-mingled production Hard to allocate production among zones
Sparse core data Most porosity/permeability data from logs
Sparse pressure data Can’t use pressure regimes to establish fault blocks
Few dipmeters Little help in locating faults
Inclined oil/water contacts Confuses fault interpretation
Carpinteria FieldF-Series Oil/Water Contacts
-4000
-3800
-3600
-3400
-3200
-3000
-2800
-2600
-2400
-2200
998000 1000000 1002000 1004000 1006000 1008000 1010000 1012000 1014000 1016000
Zone 6 X-value
Su
bse
a D
ep
th
F1
F2
F2A
F3
F4
F5
F6
STATE LEASESP-0166P-0240
CARPINTERIA FIELDOIL-WATER CONTACTS
STRATEGIES Improve production with workovers/RTPs Prepare for waterflood and redrills
Geologic and petrophysical studies
Participate in Department of Energy programs Advanced Reservoir Management project - geologic and
reservoir studies Class III - financial assistance with redrills
Leverage resources through technology Digitize well logs and field reports Link employees and consultants electronically Use 3-D computer modeling
CARPINTERIA PROJECT
Detailed Log CorrelationUsing True Stratigraphic
Thickness Traces in AutoCad-LT
1 0 0 0 0 0 0 1 0 0 5 0 0 0 1 0 1 0 0 0 0
8 0 4 0 0 0
8 0 6 0 0 0
8 0 8 0 0 0
FULL OIL COLUMN
OIL / WATER CONTACT
WET INTERVAL
Direction of Axial Plunge
PROBABLE FAULT
SATURATION CONDITION OF F4 ZONE WELLS
A52
CONTOURS ON TOP F1and
CONTOURS ON F1 O/W CONTACT
Lease P-0166
AREA 1
AREA 2
PLANNED REDRILL WELL PATHA48WB01 F1 ZONE
3 D MODEL VIEW OF 1999CARPINTERIA FIELDREDRILL PROGRAM
WELLS
RELATIONSHIP OF REDRILL PROGRAM TO EXISTING WELLSEAST HOGAN AREA
REDRILL BOREHOLE
EXISTING BOREHOLE
COLLISION AVOIDANCE USING 3-D MODEL
Carpinteria Field
Location
CARPINTERIA FIELDDEPOSITIONAL SETTING
F3
ZO
NE
SP RESISTIVITY
EXAMPLE DUAL INDUCTION LOGWell A48 Zone F3
SAND
SHALE
Fault
F3 Zone
CROSS SECTION ALONG PATH OF REDRILLA49WB01
Platform Hogan
Zone F1Zone F2Zone F3Multiple zones
A49WB01A43WB01
A44WB02
A14WB01
A22WB01
A48WB02
RESULTS OF 1998 REDRILL PROGRAMSHOWING REDRILL TRAJECTORIES
AND COMPLETED INTERVALS
PLATFORM HOGAN
10000
100000
LO
GA
RIT
HM
IC P
RO
DU
CT
ION
(B
bls
/mo
)
PURCHASE
REDRILL PROGRAM14,721 Bbl/mo Increase
HOGAN MONTHLY PRODUCTION SINCE PURCHASE
WHAT’S NEXT?
MORE THAN 30 SIMILAR REDRILL PROJECTS ARE AVAILABLE FROM PLATFORMS HOGAN AND HOUCHIN
GRASS ROOTS HORIZONTALS ARE BEING STUDIED BELOW HOBSON FAULT AND INTO NEIGHBORING STATE LEASES
DEEP POSSIBILITIES EXIST IN OLDER MIOCENE SECTIONS
NOT THE END……..