“多层叠置独立含煤层气系统”形成的沉积控制因素

沈玉林; 秦勇; 郭英海; 易同生; 邵玉宝; 金洪波

doi:10.3799/dqkx.2012.064

Volume 37 Issue 3

May 2012

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Article Navigation > Earth Science > 2012 > 37(3): 573-579

SHEN Yu-lin, QIN Yong, GUO Ying-hai, YI Tong-sheng, SHAO Yu-bao, JIN Hong-bo, 2012. Sedimentary Controlling Factor of Unattached Multiple Superimposed Coalbed-Methane System Formation. Earth Science, 37(3): 573-579. doi: 10.3799/dqkx.2012.064

Citation:

SHEN Yu-lin, QIN Yong, GUO Ying-hai, YI Tong-sheng, SHAO Yu-bao, JIN Hong-bo, 2012. Sedimentary Controlling Factor of Unattached Multiple Superimposed Coalbed-Methane System Formation. Earth Science, 37(3): 573-579. doi: 10.3799/dqkx.2012.064

Citation:

SHEN Yu-lin, QIN Yong, GUO Ying-hai, YI Tong-sheng, SHAO Yu-bao, JIN Hong-bo, 2012. Sedimentary Controlling Factor of Unattached Multiple Superimposed Coalbed-Methane System Formation. Earth Science, 37(3): 573-579. doi: 10.3799/dqkx.2012.064

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Sedimentary Controlling Factor of Unattached Multiple Superimposed Coalbed-Methane System Formation

doi: 10.3799/dqkx.2012.064

SHEN Yu-lin^{1, 2
,},
QIN Yong^{1, 2},
GUO Ying-hai^{1, 2},
YI Tong-sheng³,
SHAO Yu-bao¹,
JIN Hong-bo¹

1.
School of Resources and Earth Science, China University of Mining and Technology, Xuzhou 221116, China
2.
Key Laboratory of CBM Resource and Reservoir-Generating Process of Ministry of Education, China University of Mining and Technology, Xuzhou 221008, China
3.
Guizhou Bureau of Coal Geology, Guiyang 550006, China

Received Date: 2011-10-20
Available Online: 2021-11-09
Publish Date: 2012-05-01

Abstract

Abstract

Based on the measured data of Late Permian coal-bearing strata in western Guizhou Province, the sedimentary controlling factor of "unattached multiple superimposed coalbed-methane system" formation is preliminarily discussed in this paper. It shows that the depositional conditions of coal-bearing strata have laid the material physical properties foundation for "unattached multiple superimposed coalbed-methane system". The characteristics of sequence stratigraphic framework limit gas connectivity between gas units. The siderite mudstone with low-permeability, which is distributed near the maximum flooding surface, makes the vertical sub-strata of gas between the gas-bearing units relatively independent. There is correlation between coalbed methane contents and the sea level. Coalbed methane contents near to the maximum flooding surface are relatively low. The interface can be regarded as a stand-alone boundary for gas-forming units in the coalbed-methane system. The sequence boundary connects the gas units, making the coal seams near to sequence boundary with the similar gas bearing characteristics.
- coalbed methane,
- sequence stratigraphy,
- low permeability rock,
- maximum flooding surfaces,
- coalbed methane bearing system

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References(39)

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Sedimentary Controlling Factor of Unattached Multiple Superimposed Coalbed-Methane System Formation

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