THE OVERPRESSURE COMPARTMENTS ON NATURAL GAS OF KUQA DEPRESSION IN TARIM BASIN

XU Shi-lin,Lü Xiu-xiang,ZHOU Xin-yuan,MA Yu-jie,YANG Ming-hui,LIU Luo-fu

doi:10.11764/j.issn.1672-1926.2003.05.362

Natural Gas Geoscience >

2003 , Vol. 14 >Issue 5: 362 - 365

DOI: https://doi.org/10.11764/j.issn.1672-1926.2003.05.362

THE OVERPRESSURE COMPARTMENTS ON NATURAL GAS OF KUQA DEPRESSION IN TARIM BASIN

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1. Basin and Research Center，University of Petroleum，Beijing 102249，China；2. Key Laboratory for Petroleum Entrapment Mechanism in Ministry of Education，University of Petroleum，Beijing 102249，China；3. Branch of Tarim Oilfield Company，CNPC，Kverle 841000, China

Received date: 2003-04-07

Revised date: 2003-07-10

Online published: 2003-10-20

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Abstract

The concept of fluid compartment offers a new thought to accurately understand the petroleum migration and accumulation processes and distribution law in basin. The longitudinal pressure of Kuqa depression can be divided into three zones and characterized by three steps rising gradually by layer. This kind of difference obviously indicates that the fluid compartments occur in this area. The top sealing layers of the compartments are composed of gypsolyte and salt rock and gypsum-bearing mudstone of Tertiary system. They are controlled by lithology and not characterized by horizontal distribution, diachronism and transformation. The gas producing intervals with overpressure are overlain by the top sealing layers. The faults act as the side sealing boards of the fluid compartments. The entrapment mechanism of the overpressure gas reservoirs determines that the overpressure gas reservoirs belong to the entrapment pattern inside compartment.

Key words： Tarim basin; Kuqa depression; Overpressure; Fluid compartment; Entrapment pattern.

Cite this article

XU Shi-lin,Lü Xiu-xiang,ZHOU Xin-yuan,MA Yu-jie,YANG Ming-hui,LIU Luo-fu . THE OVERPRESSURE COMPARTMENTS ON NATURAL GAS OF KUQA DEPRESSION IN TARIM BASIN[J]. Natural Gas Geoscience, 2003 , 14(5) : 362 -365 . DOI: 10.11764/j.issn.1672-1926.2003.05.362

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