The role of seismic in exploration of carbonate buildups in offshore Sarawak, Malaysia

Conference · Fri Jul 01 04:00:00 EDT 1994 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:6749340

Ng, T S ^[1]

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1. Petronas Carigali, Kuala Lumpur (Malaysia)

The Luconia geological province offshore Sarawak is typical in that carbonates extensively developed mainly during the Miocene, and some 200 carbonate buildups have been seismically mapped. The seismic data of the early days were mainly used to define the carbonate structure. The present advancement of the seismic technology enables interpreters to confidently map the Miocene carbonate buildups and the Pliocene argillaceous top seals, which are characterized by low amplitude and monotonous reflectors. Furthermore, these high-frequency seismic data permit the identification of the pre-carbonate structural focusing and deep faults as hydrocarbon mitigation pathways, upper Miocene sandy thief beds, and intraformational shale as secondary top seal. The use of seismic data in the development of carbonate gas fields is not only confined to structural mapping but also to the stratigraphic interpretations. Both the vertical and lateral porosity variations of the carbonate reservoirs can be calibrated to seismic amplitude and acoustic impedance. The thickness of the reservoir indicates some relationships with the seismic isochron values. These techniques can be used in selecting optimum location for development wells.

• OSTI ID: 6749340
• Report Number(s): CONF-940803--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 78:7
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
ASIA
CARBONATE ROCKS
DEVELOPING COUNTRIES
EXPLORATION
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MALAYSIA
MARINE SURVEYS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
RESOURCES
ROCKS
SEDIMENTARY ROCKS
SEISMIC SURVEYS
SURVEYS