spraberry and dean sandstones (lower permian, leonardian), midland basin, west texas -
DESCRIPTION
SPRABERRY AND DEAN SANDSTONES (LOWER PERMIAN, LEONARDIAN), MIDLAND BASIN, WEST TEXAS - MATURE PETROLEUM RESERVOIRS, SIGNIFICANT REMAINING RESOURCES PBGSP Bureau of Economic Geology The University of Texas at Austin. Edgar H. Guevara. THE SPRABERRY AND DEAN FOMATIONS - PowerPoint PPT PresentationTRANSCRIPT
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY AND DEAN SANDSTONESSPRABERRY AND DEAN SANDSTONES(LOWER PERMIAN, LEONARDIAN), (LOWER PERMIAN, LEONARDIAN),
MIDLAND BASIN, WEST TEXAS -MIDLAND BASIN, WEST TEXAS -
MATURE PETROLEUM RESERVOIRS,MATURE PETROLEUM RESERVOIRS,SIGNIFICANT REMAINING RESOURCESSIGNIFICANT REMAINING RESOURCES
PBGSP
Bureau of Economic GeologyThe University of Texas at Austin
Edgar H. GuevaraEdgar H. Guevara
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
THE SPRABERRY AND DEAN FOMATIONSTHE SPRABERRY AND DEAN FOMATIONS
• have been interpreted as low-stand, have been interpreted as low-stand, submarine-fan deposits, e.g., Handford submarine-fan deposits, e.g., Handford (1981); Sarg (1989); Tyler and others (1997)(1981); Sarg (1989); Tyler and others (1997)
• record terrigenous clastics transportrecord terrigenous clastics transport into the Midland Basin in the Early Permianinto the Midland Basin in the Early Permian
• include hydrocarbon reservoirs thatinclude hydrocarbon reservoirs that collectively contain >10 billion bbl OOIPcollectively contain >10 billion bbl OOIP
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY AND DEAN RESERVOIRSSPRABERRY AND DEAN RESERVOIRS
• Naturally fractured siltstones and sandstonesNaturally fractured siltstones and sandstones
• Low matrix porosity (<10%) locally enhancedLow matrix porosity (<10%) locally enhanced by mineral dissolution or reduced byby mineral dissolution or reduced by quartz and carbonate cementquartz and carbonate cement
• <1 md matrix permeability<1 md matrix permeability
• >1 darcy fracture permeability>1 darcy fracture permeability
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY AND DEAN RESERVOIRSSPRABERRY AND DEAN RESERVOIRS
• Low recovery (<10%)Low recovery (<10%)
• Short-lived wells are common, but some Short-lived wells are common, but some wells in waterflood areas have long wells in waterflood areas have long production historyproduction history
• Under-pressuredUnder-pressured
• Collectively contain >10 billion bbl OOIPCollectively contain >10 billion bbl OOIP
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TXFrom Tyler and others (1997)
SPRABERRY AND SPRABERRY AND DEAN FORMATIONS DEAN FORMATIONS (LOWER PERMIAN,(LOWER PERMIAN,LEONARDIAN),LEONARDIAN),MIDLAND BASINMIDLAND BASIN
GEOLOGIC SETTING GEOLOGIC SETTING AND REPRESENTATIVEAND REPRESENTATIVEOIL FIELDSOIL FIELDS
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
STRATIGRAPHIC COLUMN - CENTRAL SPRABERRY TREND
From Tyler and others (1997)
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
TUBB / DEAN / LOWER SPRABERRY STRATIGRAPHIC RELATIONSHIPS
BureauofEconomic
Geology
QAd4871x E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY AND DEAN DEPOSITIONAL SEQUENCES
MIDLAND BASIN, WEST TEXAS
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEPOSITIONAL
SETTING
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY FORMATIONSPRABERRY FORMATION OPERATIONAL UNITSOPERATIONAL UNITS
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
A B
1
1’
1’
W-E CROSS SECTIONW-E CROSS SECTIONSPRABERRY ANDSPRABERRY ANDDEAN FORMATIONSDEAN FORMATIONS
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
AWest East
BCENTRAL SPRABERRY TREND
From Tyler and others (1997)
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
From Tyler and others (1997)
SAND SAND DISTRIBUTIONDISTRIBUTION
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY FORMATIONSPRABERRY FORMATION
SAND DISPERSAL PATTERNSSAND DISPERSAL PATTERNS
From Tyler and others (1997)
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
UNUNITIZEDAREA
CENTRAL SPRABERRY TREND
A A’
A A’ cross section lineCentral Spreberry Trend
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
CENTRAL SPRABERRY TRENDUNUNITIZED AREA
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
UPPER SPRABERRYUPPER SPRABERRYOPERATIONAL UNIT IucOPERATIONAL UNIT Iuc
NET SANDSTONENET SANDSTONEAND SILTSTONEAND SILTSTONE
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
Photograph, boxed, slabbed core
R
S
T
U
R Sandstone bed in Sohio Petroleum Co. reports
EXPLANATION
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SUN, JALONICK 2 SUN, JALONICK 2 CORE FACIESCORE FACIES
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SUN, JALONICK 2SUN, JALONICK 2CORE FACIESCORE FACIES
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN DEAN STRUCTURESTRUCTURE
BureauofEconomic
Geology
-5,000
-6500
-6000
-4000
MIDLAND BASINMIDLAND BASIN
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN FM.DEAN FM.OPERATIONAL OPERATIONAL
UNITSUNITS
BureauofEconomic
Geology
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN FM.DEAN FM.CROSS SECTIONSCROSS SECTIONS
12
3 4 5 67
89
12 34 5 6
78
9 10
BureauofEconomic
Geology
W
E
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TXBureau
ofEconomic
Geology
2 31 4 5
W
8 9 106 7E'
DEAN FM. - NORTHERN MIDLAND BASINDEAN FM. - NORTHERN MIDLAND BASIN
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN FM.DEAN FM.NET SANDNET SAND
UNIT 4UNIT 4
BureauofEconomic
Geology
20
MIDLAND BASINMIDLAND BASIN
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
CENTRALCENTRALSPRABERRY SPRABERRY
TREND TREND
DEAN FM.DEAN FM.CROSS SECTIONSCROSS SECTIONS
12 3 4 5 6 7
8 910
11 1213
REAGAN COGLASSCOCK CO
UPTON COMIDLAND CO
BureauofEconomic
Geology
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN FM. – CENTRAL SPRABERRY TRENDDEAN FM. – CENTRAL SPRABERRY TREND
BureauofEconomic
Geology
2 31 4 5 6 7
2 31 4 5 6
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
SPRABERRY SPRABERRY TRENDTREND
DEAN FM.DEAN FM.NET SANDNET SAND
UNIT 4UNIT 4
BureauofEconomic
Geology
REAGAN CO
GLASSCOCK COMIDLAND CO
UPTON CO
15
15
15
25
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN CORE FACIESDEAN CORE FACIES
ACKERLY-DEANACKERLY-DEANWATERFLOOD UNITWATERFLOOD UNITN. MIDLAND BASINN. MIDLAND BASIN
E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX
DEAN CORE FACIESDEAN CORE FACIES
ACKERLY-DEANACKERLY-DEANWATERFLOOD UNITWATERFLOOD UNITN. MIDLAND BASINN. MIDLAND BASIN