Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin

LI Peng; XIONG Jian; YAN Qi; ZHU Zhengwen; LIU Xiangjun; WU Jun; WANG Zhenlin; ZHANG Lei

doi:10.11781/sysydz202204569

Volume 44 Issue 4

Jul. 2022

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Article Navigation > PETROLEUM GEOLOGY & EXPERIMENT > 2022 > 44(4): 569-578

LI Peng, XIONG Jian, YAN Qi, ZHU Zhengwen, LIU Xiangjun, WU Jun, WANG Zhenlin, ZHANG Lei. Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2022, 44(4): 569-578. doi: 10.11781/sysydz202204569

Citation:

LI Peng, XIONG Jian, YAN Qi, ZHU Zhengwen, LIU Xiangjun, WU Jun, WANG Zhenlin, ZHANG Lei. Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2022, 44(4): 569-578. doi: 10.11781/sysydz202204569

Citation:

LI Peng, XIONG Jian, YAN Qi, ZHU Zhengwen, LIU Xiangjun, WU Jun, WANG Zhenlin, ZHANG Lei. Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2022, 44(4): 569-578. doi: 10.11781/sysydz202204569

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Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin

doi: 10.11781/sysydz202204569

1.
Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
2.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received Date: 2021-05-18
Rev Recd Date: 2022-05-31
Publish Date: 2022-07-28

Abstract

Abstract

To reveal the mechanical properties of the rocks of the Fengcheng Formation, the rocks of the Lower Permian Fengcheng Formation in the Mahu Sag of Junggar Basin were taken for the laboratory mechanical tests to obtain mechanical behaviors of the rocks, the influence of mineral compositions on strength parameters of the rocks of the Fengcheng Formation was then discussed. The rocks of the Fengcheng Formation in the Mahu Sag have strong heterogeneity, which results in obvious differences of mechanical properties of rocks with different lithologies. The mechanical strength and elastic modulus of dolomitic rocks are higher, but the Poisson's ratio is lower. The form of rock fracturing is relatively simple. Under uniaxial conditions, rock samples have strong brittleness, which is characterized by tensile fracturing, while under high confining pressure, rock samples have weaker brittleness and enhanced ductility, which is mainly characterized by single shear fracturing. The compressive strength, tensile strength and fracture toughness of rocks decrease with the increase of siliceous mineral content, while increase with the increase of calcium mineral content.
- rock mechanical properties,
- mineral composition,
- fracturing form,
- Fengcheng Formation,
- Lower Permian,
- Mahu Sag,
- Junggar Basin

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References(38)

References

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Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin

doi: 10.11781/sysydz202204569

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通讯作者: 陈斌, bchen63@163.com

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Lithological influences to rock mechanical properties of Permian Fengcheng Formation in Mahu Sag, Junggar Basin

doi: 10.11781/sysydz202204569

Abstract

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通讯作者: 陈斌, bchen63@163.com

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