Integration of 3-D seismic data with reservoir modeling of a stratigraphically complex reservoir, central Saudi Arabia

Conference · Wed Sep 01 00:00:00 EDT 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:7135547

Simms, S C ^[1]

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1. Saudi Aramco, Dhahran (Saudi Arabia)

A 425-km[sup 2], three-dimensional (3-D) seismic survey was shot in 1992 over one of the recently discovered oil fields in central Saudi Arabia. The primary objective of this survey was to provide stratigraphic control within a complex fluvial reservoir. The Permian age reservoir is a multistory, multilateral sequence of sandstones interbedded with nonproductive mudstones and siltstones. The seismic data were integrated with well control from over 50 wells to produce a 3-D geologic model of the reservoir. Numerous examples of the seismic and well data are presented in this case history. Stratigraphic cross sections through the wells illustrate that the complex nature of the reservoir and seismic sections through these wells show good correlation between seismic character and stratigraphy. Meandering channels and massive siltstone/mudstone bodies are clearly visible on seismic horizon slices and time slices. Faulting is evident on both seismic section at times slices. Acoustic impedance sections produced from both forward and inverse modeling of the seismic data are compared with geologic models of porosity and lithology based on well control alone. Good correlation between acoustic impedance and porosity/lithology allow the use of the seismic data to guide the model between well locations. A geostatistical approach was used to interpolate between well control using the inverted seismic as [open quotes]soft data.[close quotes] 3-D visualization of the geological model illustrates increasing complexity from well control only to an integrated model.

• OSTI ID: 7135547
• Report Number(s): CONF-9310237-; CODEN: AABUD2
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:9; Conference: American Association of Petroleum Geologists (AAPG) mid-continent section meeting, Amarillo, TX (United States), 10-12 Oct 1993; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
GEOLOGIC STRATA
CONTROL
OIL FIELDS
SEISMIC SURVEYS
RESERVOIR ROCK
GEOLOGIC MODELS
POROSITY
SANDSTONES
SAUDI ARABIA
SEISMIC WAVES
SILTSTONES
STATISTICS
STRATIGRAPHY
THREE-DIMENSIONAL CALCULATIONS
ARAB COUNTRIES
ASIA
DEVELOPING COUNTRIES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
GEOLOGY
GEOPHYSICAL SURVEYS
MATHEMATICS
MIDDLE EAST
MINERAL RESOURCES
PETROLEUM DEPOSITS
RESOURCES
ROCKS
SEDIMENTARY ROCKS
SURVEYS
020200* - Petroleum- Reserves
Geology
& Exploration