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The AAPG/Datapages Combined Publications Database
Indonesian Petroleum Association
Abstract
Palaeoenvironmental and Diagenetic History of Kais Formation, K.B.S.A, Irian Jaya
Abstract
A study of the palaeoenvironmental and diagenetic history of the Kais Formation was made based on the results of a sedimentological and petrographic study of core material from 11 wells drilled in the K.B.S.A. Block, Irian Jaya.
All sediments in the cored intervals are shallow, inner shelf carbonates and have a similar general diagenetic history. The general palaeoenvironmental setting was an archipelago with lagoons surrounding the islands, and an open marine shallow shelf (less than 50 m water depth) between the islands. Comparison of the results of this study with the recent Pulau Seribu of N.W. Java indicates that the two areas do not differ greatly in their facies.
Porosities and permeabilities are generally good. Aragonite dissolution and dolomitization were both major porosity and permeability enhancing processes.
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