Log-derived evaluation of shaly clastic reservoirs
Journal Article
·
· J. Pet. Technol.; (United States)
Reliable evaluation of hydrocarbon resources in shaly clastic reservoir rocks is an important, although difficult, task. This paper briefly reviews the wide variety of interpretive models that has evolved. The discussion focuses on digital shaly-sand evaluation techniques based on the Waxman-Smits model to provide information on total and effective reservoir porosity and fluid distribution, silt content, volume, type (smectite, illite, and chlorite/kaolinite), and distribution modes (dispersed, laminated, and structural) of the clay minerals present in subsurface formations. Case studies from different geologic environments present field experiences in clastic reservoir rocks that exhibit a wide range of porosity and permeability and various amounts, types, and distribution modes of clay minerals. A log-derived formation damage index is also discussed. Finally, emphasis is placed on improved reservoir evaluation of thinly laminated shale/sand intervals through the integration and enhancement of resistivity data, short-spaced dielectric measurements, and/or analytical data-blocking routines.
- Research Organization:
- Dresser Industries Inc.
- OSTI ID:
- 7048368
- Journal Information:
- J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 39:2; ISSN JPTJA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHLORITE MINERALS
CLAYS
COMPUTERIZED SIMULATION
DIELECTRIC PROPERTIES
ELECTRIC LOGGING
ELECTRICAL PROPERTIES
EXPLORATION
FORMATION DAMAGE
GEOLOGIC DEPOSITS
HYDROCARBONS
ILLITE
KAOLINITE
MATHEMATICAL MODELS
MINERAL RESOURCES
MINERALS
NATURAL GAS DEPOSITS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
POROSITY
RESERVOIR ROCK
RESISTIVITY LOGGING
RESOURCES
ROCKS
SAND
SEDIMENTARY ROCKS
SHALES
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILT
SIMULATION
SMECTITE
VOLUME
WELL LOGGING
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHLORITE MINERALS
CLAYS
COMPUTERIZED SIMULATION
DIELECTRIC PROPERTIES
ELECTRIC LOGGING
ELECTRICAL PROPERTIES
EXPLORATION
FORMATION DAMAGE
GEOLOGIC DEPOSITS
HYDROCARBONS
ILLITE
KAOLINITE
MATHEMATICAL MODELS
MINERAL RESOURCES
MINERALS
NATURAL GAS DEPOSITS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
POROSITY
RESERVOIR ROCK
RESISTIVITY LOGGING
RESOURCES
ROCKS
SAND
SEDIMENTARY ROCKS
SHALES
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILT
SIMULATION
SMECTITE
VOLUME
WELL LOGGING