FACTORS INFLUENCING GAS PRODUCTION EFFECTIVENESS OF LONGMAXI FORMATION SHALE IN SICHUAN BASIN AND ADJACENT AREAS

WANG Yufang; ZHAI Gangyi; WANG Jinzhu; ZHANG Yunxiao

Volume 23 Issue 4

Aug. 2017

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Article Navigation > Journal of Geomechanics > 2017 > 23(4): 540-547

WANG Yufang, ZHAI Gangyi, WANG Jinzhu, et al., 2017. FACTORS INFLUENCING GAS PRODUCTION EFFECTIVENESS OF LONGMAXI FORMATION SHALE IN SICHUAN BASIN AND ADJACENT AREAS. Journal of Geomechanics, 23 (4): 540-547.

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FACTORS INFLUENCING GAS PRODUCTION EFFECTIVENESS OF LONGMAXI FORMATION SHALE IN SICHUAN BASIN AND ADJACENT AREAS

WANG Yufang^{1, 2
,},
ZHAI Gangyi^{1, 2
,
,},
WANG Jinzhu¹,
ZHANG Yunxiao¹

1.
Oil & Gas Survey, China Geological Survey, Beijing 100083, China
2.
Unconventional oil and gas geology laboratory, China Geological Survey, Beijing 100029, China

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Received: 2016-06-14
Published: 2017-08-01

Abstract

Abstract

Many important findings and breakthroughs concerning the exploration and development of Lower Silurian Longmaxi shale gas in Sichuan basin and adjacent areas have been made. A series of drilling wells and fracturing reconstructions, such as Well JY1HF, Pengye1Hf, Well DY2HF, Nanye1HF, Well Longcan2 and Well Baoye1, all show a good prospect of Longmaxi shale gas in exploration and development. Correlational analysis were made between relevant parameters and post-fracture production in several shale gas wells in Sichuan Basin and adjacent areas, such as reservoir geological condition, reservoir physical property, in-situ stress, structure preservation, construction scale of fracturing and so on. It is concluded that the main controlling factors affecting the exploration and development of shale gas are thickness of high quality shales, gas-bearing properties, brittle mineral content, porosity, formation pressure coefficient and horizontal stress difference coefficient, which provides important reference and guidance for the efficient exploration and development of marine shale gas in the future.
- Sichuan Basin and adjacent areas,
- Longmaxi formation,
- gas production effectiveness,
- geological conditions,
- reservoir physical property,
- structure preservation

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References(27)

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