深层页岩气地质工程一体化体积压裂关键技术及应用

蒋廷学; 卞晓冰; 孙川翔; 张峰; 林立世; 魏娟明; 仲冠宇

doi:10.3799/dqkx.2022.311

Volume 48 Issue 1

Jan. 2023

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Jiang Tingxue, Bian Xiaobing, Sun Chuanxiang, Zhang Feng, Lin Lishi, Wei Juanming, Zhong Guanyu, 2023. Key Technologies in Geology-Engineering Integration Volumetric Fracturing for Deep Shale Gas Wells. Earth Science, 48(1): 1-13. doi: 10.3799/dqkx.2022.311

Citation:

Jiang Tingxue, Bian Xiaobing, Sun Chuanxiang, Zhang Feng, Lin Lishi, Wei Juanming, Zhong Guanyu, 2023. Key Technologies in Geology-Engineering Integration Volumetric Fracturing for Deep Shale Gas Wells. Earth Science, 48(1): 1-13. doi: 10.3799/dqkx.2022.311

Citation:

Jiang Tingxue, Bian Xiaobing, Sun Chuanxiang, Zhang Feng, Lin Lishi, Wei Juanming, Zhong Guanyu, 2023. Key Technologies in Geology-Engineering Integration Volumetric Fracturing for Deep Shale Gas Wells. Earth Science, 48(1): 1-13. doi: 10.3799/dqkx.2022.311

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Key Technologies in Geology-Engineering Integration Volumetric Fracturing for Deep Shale Gas Wells

doi: 10.3799/dqkx.2022.311

Jiang Tingxue^{1, 2
,
,},
Bian Xiaobing^{1, 2},
Sun Chuanxiang^{1, 3},
Zhang Feng⁴,
Lin Lishi⁵,
Wei Juanming^{1, 2},
Zhong Guanyu^{1, 2}

1.
State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China
2.
SINOPEC Research Institute of Petroleum Engineering Co.Ltd., Beijing 102206, China
3.
Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 102206, China
4.
Petroleum Engineering Technology Research Institute, SINOPEC Jianghan Oilfield Company, Wuhan 430000, China
5.
SINOPEC Southwest Oil & Gas Company, Chengdu 610096, China

Received Date: 2022-01-28
Available Online: 2023-02-01
Publish Date: 2023-01-25

Abstract

Abstract

According to the geological characteristics of deep shale gas, such as large horizontal stress difference, small vertical stress difference and strong rock plastic characteristics, evaluation methods were established for the logging curve, total organic carbon, porosity, all gas hydrocarbon, key logging elements, silicon, mineral brittleness, rock mechanics parameters, etc.. And the geology-engineering double sweet spot study along the horizontal wellbore was carried out based on the design concept of geology-engineering integration, so as to accurately identify optimal geological & engineering sweet spot, providing guidance for horizontal well fracturing in deep shale gas play. Then, based on three-dimensional fracture network with high fracture conductivity as the objective function, the volume fracturing pump mode and key parameter optimizations were studied for deep shale gas well under narrow pressure window, i.e., circuitous temporary plugging fracturing technology optimization, the dynamic movement of proppant in complex fracture network and test of fracture conductivity, and research and development for integrated variable viscosity slick water, etc.. Field applications demonstrate that the geology-engineering integration volumetric fracturing technology could improve post-frac gas production by more than 30%-50% compared with adjacent wells. The technology can greatly improve the economic development of deep shale gas wells, and it also has important guiding significance for shale gas wells with vertical depth more than 4 500 m as well.
- deep shale gas,
- geology-engineering integration,
- volume fracturing,
- three-dimensional fracture network,
- integrated variable viscosity slick water,
- petroleum engineering

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References(54)

References

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Key Technologies in Geology-Engineering Integration Volumetric Fracturing for Deep Shale Gas Wells

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