Key technologies for hydraulic fracturing of normal pressure shale gas in the Zheng’an area of Guizhou

LI Long; CHEN Xianju; PENG Anyu; WU Song and CHI Huanpeng; ${author.authorNameEn}

doi:10.12143/j.ztgc.2022.05.025

2022 Vol. 49, No. 5

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Article navigation > DRILLING ENGINEERING > 2022 > 49(5): 189-193

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LI Long, CHEN Xianju, PENG Anyu, WU Song and CHI Huanpeng, . 2022. Key technologies for hydraulic fracturing of normal pressure shale gas in the Zheng’an area of Guizhou. DRILLING ENGINEERING, 49(5): 189-193. doi: 10.12143/j.ztgc.2022.05.025

Citation:

LI Long, CHEN Xianju, PENG Anyu, WU Song and CHI Huanpeng, . 2022. Key technologies for hydraulic fracturing of normal pressure shale gas in the Zheng’an area of Guizhou. DRILLING ENGINEERING, 49(5): 189-193. doi: 10.12143/j.ztgc.2022.05.025

Key technologies for hydraulic fracturing of normal pressure shale gas in the Zheng’an area of Guizhou

1.Guizhou Shale Gas Exploration and Development Co., Ltd., Guiyang Guizhou 550008, China;
2.Oil & Gas Survey, China Geological Survey, Beijing 100083, China

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Corresponding author: , chp2121@126.com

Received Date: 09 June 2022

Revised Date: 28 July 2022

Abstract

Abstract

The shale gas reservoir in the Zheng’an area is characterized with normal pressure， thin high-quality shale gas interval and large difference in horizontal principal stresses， leading to difficulties in forming complex fracture network， and in turn， restricting the increase of shale gas production. In view of the difficulties， the fracturing technology system， which mainly composes of multiple clusters of close cutting fracturing in horizontal well sections， fine fracturing design of horizontal wells， variable viscosity fracturing fluid systems with frictional pressure reduction， temporary plugging diversion and flowback fluid reuse， has been formed through the analysis of normal pressure shale gas horizontal well fracturing technology and application in the Zheng’an area in the context of the geological characteristics of the Wufeng-Longmaxi shale gas formation in the area， and referring to the advanced fracturing technology of shale gas in southern China. The technology has achieved good reservoir stimulation and production effect， which provides a strong support for the effective development of shale gas in the Zheng’an area.
- normal pressure shale gas /
- fracturing technology /
- multiple clusters of close cutting fracturing /
- fine fracturing /
- variable viscosity fracturing fluid /
- temporary plugging and diverting /
- Zheng’an area

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References

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