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The AAPG/Datapages Combined Publications Database

Southeast Asia Petroleum Exploration Society (SEAPEX)

Abstract


Proceedings of the South East Asia Petroleum Exploration Society Volume VIII, 1988
Pages 203-220

The Geology of the Arun Field Miocene Reef Complex

M. Adbullah, C. F. Jordan, Jr.

Abstract

The Arun gas field was discovered in late 1971. It is located on the northern coast of Aceh Province, North Sumatra, about 230 kilometers northwest of Medan. The Previous HitreservoirNext Hit is a north-south trending reefal complex, approximately 18.5 by 5 kilometers in size. The discovery well, Arun-Al, encountered 1080 feet of gas- bearing limestones of Lower-Middle Miocene age.

The purpose of this study was to establish a detailed Previous HitreservoirNext Hit description of the Arun Limestone for reserves redetermination and Previous HitreservoirNext Hit depletion stimulation. It was found that the Arun Limestone can be subdivided into three major facies: reef, near-reef, and “lageonal”. These facies were mapped from core and log data throughout the reef complex in the field area, and the resulting model was superimposed on a 12-layer log zonation of the rock body. Previous HitReservoirNext Hit property maps were then generated for each layer. The new geological model produced was a integral part in the successful reserve redetermination and Previous HitreservoirTop simulation study.


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