塔里木盆地库车坳陷致密砂岩气藏成因类型

李卓; 姜振学; 庞雄奇; 李峰; 张宝收

doi:10.3799/dqkx.2013.015

Volume 38 Issue 1

Jan. 2013

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Article Navigation > Earth Science > 2013 > 38(1): 156-164

LI Zhuo, JIANG Zhen-xue, PANG Xiong-qi, LI Feng, ZHANG Bao-shou, 2013. Genetic Types of the Tight Sandstone Gas Reservoirs in the Kuqa Depression, Tarim Basin, NW China. Earth Science, 38(1): 156-164. doi: 10.3799/dqkx.2013.015

Citation:

LI Zhuo, JIANG Zhen-xue, PANG Xiong-qi, LI Feng, ZHANG Bao-shou, 2013. Genetic Types of the Tight Sandstone Gas Reservoirs in the Kuqa Depression, Tarim Basin, NW China. Earth Science, 38(1): 156-164. doi: 10.3799/dqkx.2013.015

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Genetic Types of the Tight Sandstone Gas Reservoirs in the Kuqa Depression, Tarim Basin, NW China

doi: 10.3799/dqkx.2013.015

LI Zhuo^{1, 2
,},
JIANG Zhen-xue^{1, 2},
PANG Xiong-qi^{1, 2},
LI Feng^{1, 2},
ZHANG Bao-shou³

1.
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
2.
Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249, China
3.
Institute of Exploration and Exploitation Research, Tarim Oil Field Company, Kurla 841000, China

Received Date: 2012-01-08
Publish Date: 2013-01-15

Abstract

Abstract

To further understand the genetic types of the tight sandstone gas reservoirs in Kuqa depression, the core from tight sandstone gas reservoirs is sampled to carry out the analysis on hydrocarbon charge history and porosity evolution. The hydrocarbon charge history is investigated by analyzing the fluid inclusion petrography, and microther mometry and the porosity evolution is restored by using the model of deposition-structure -diagenesis. Combining with gas-water relationship and distribution of tight sandstone gas reservoirs. There are two charge events in the YN2 Jurassic tight sandstone reservoir, with the one of oil charge during 23-12 Ma, and the other gas charge during 5-0 Ma. The reservoir porosity dropped to less than 12% and became tight during the period of 12-8 Ma. Two charge events have been recorded in the DN2 Paleogene tight sandstone reservoir; the former is oil charge during 23-12 Ma, and the latter is the gas charge during 5-0 Ma. The reservoir porosity dropped to less than 12% during the period of 2-0 Ma and became tight later. Two genetic types of tight sandstone gas reservoirs have been confirmed. The YN2 Jurassic tight sandstone reservoir is of the genetic type of "tight deep basin gas reservoir" with the accumulation process of gas charge after the reservoir tightened and the DN2 Paleogene tight sandstone reservoir is defined as "tight conventional gas reservoir" with the accumulation process of gas charge before the reservoir tightened. This study is of significance for further exploration and exploitation of tight sandstone gas in Kuqa depression.
- Kuqa depression,
- tight sandstone gas reservoirs,
- genetic types,
- gas reservoir,
- petroleum geology

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References(37)

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Genetic Types of the Tight Sandstone Gas Reservoirs in the Kuqa Depression, Tarim Basin, NW China

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