Control Effect of Faults on Oil-Gas Contribution in a Block of Indonesia

Wenqi Zhang, Chunlei Li, Zhenhua Bai

2018

Abstract

Block A in Indonesia is a faulted anticline structure limited by reverse thrust faults on the east and west boundaries. The tectonic evolution mainly experienced rift period, rift-depression period, depression period and compression inversion period. Traps formed during the Pliocene-Pleistocene crustal inversion period, matching well with large-scale hydrocarbon generation and expulsion. The NNW strike faults, NNE strike faults and NEE strike faults mainly developed in the block. The NNW strike boundary faults are reverse thrust faults developed on the basis of the normal faults of the previous graben boundary and controlled the formation of structural trap of Block A. During the large-scale period of hydrocarbon generation and expulsion, the boundary inversion thrust faults acted as a channel for vertical migration of oil and gas. Hydrocarbons from the Lower Lahat Formation and the Talang Akar Formation were communicated to the upper reservoirs, and the oil and gas were blocked laterally. The NNE trending faults were controlled by NNW strike faults, and mainly developed in the rift-depression period and lateral sealing for oil and gas. The vertical and horizontal distribution of oil and gas in Block A makes the structure as the main controlling factor for oil and gas distribution in Block A.

Paper Citation

in Harvard Style

Zhang W., Li C. and Bai Z. (2018). Control Effect of Faults on Oil-Gas Contribution in a Block of Indonesia.In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 300-303. DOI: 10.5220/0007429503000303

in Bibtex Style

@conference{iweg18,
author={Wenqi Zhang and Chunlei Li and Zhenhua Bai},
title={Control Effect of Faults on Oil-Gas Contribution in a Block of Indonesia},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={300-303},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007429503000303},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Control Effect of Faults on Oil-Gas Contribution in a Block of Indonesia
SN - 978-989-758-342-1
AU - Zhang W.
AU - Li C.
AU - Bai Z.
PY - 2018
SP - 300
EP - 303
DO - 10.5220/0007429503000303