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AAPG GEO 2010 Middle East
Geoscience Conference & Exhibition
Innovative Geoscience Solutions – Meeting Hydrocarbon Demand in Changing Times
March 7-10, 2010 – Manama, Bahrain

Complex Fracture Carbonate Reservoir Modeling for Reserves for Reserves Assurance in West Java, Indonesia

Adi FM Ringoringo1; Joko Padmono1; Enrico Ngantung2

(1) Pertmamina, Jakarta, Indonesia.

(2) BPMIGAS, Jakarta, Indonesia.

The Oldest Carbonate reservoir in west java Indonesia is pre-Tertiary - Oligocene Carbonate. This potential reservoir is under Talang Akar Reservoir. The other carbonate reservoir in Java are mostly formed during Miocene. Some formed as reefs carbonate and some other as various clastic carbonate sediment. Sometimes in the Miocene age, tectonic activity was intensively growth. As a result, the carbonate reservoir were influenced both by structural and stratigraphic.

Part of west java - Indonesia oil fields consist of some variety of carbonate reservoir. The most productive reservoir is a build up reef reservoir combined with fracture porosity. Other productive reservoir followed by clastic carbonate with fracture porosity. The least productive is lagoonal carbonate reservoir with fracture porosity.

In such condition building a geologic modeling of such carbonate reservoir become complex and difficult. As a matter of fact, building geologic modeling is depend upon many parameter, such as geometry of the deposits facies distribution, strucrute configuration and finally reservoir properties correlation.

This paper will describe the work flow to achieve a comprehensive such geology modeling in variety complex carbonate reservoir, including fracture distribution analysis and to have more precise reserve calculation.