Dynamic mechanism and dynamic evolution process of abrupt bottom-hole rock burst in Well QL1

被引：0

作者：

Luo C. ^{[1
,2
]}

Jiang Z. ^{[1
]}

Li G. ^{[2
]}

He L. ^{[3
]}

Meng Y. ^{[2
]}

Ou B. ^{[1
]}

Xiao G. ^{[1
]}

Yan Y. ^{[1
]}

Wang X. ^{[1
]}

机构：

[1] Petroleum Engineering Technology Research Institute, Sinopec Southwest Oil & Gas Company, Deyang, 618000, Sichuan

[2] State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, 610500, Sichuan

[3] Sinopec Southwest Oil & Gas Company, Chengdu, 610059, Sichuan

来源：

Shiyou Xuebao/Acta Petrolei Sinica | 2020年 / 41卷 / 02期

关键词：

Bottom-hole rock burst; Bottom-hole stress; Effective stress; Gas drilling; High-pressure fracture trap;

D O I：

10.7623/syxb202002010

中图分类号：

学科分类号：

摘要：

Bottom-hole rock burst occurred in high-pressure fracture traps consisting of tight sandstones drilled in nitrogen drilling, basically resulting in the malignant blowout accident in Well QL1. The dynamic mechanism of bottom-hole rock burst was analyzed using the theoretical method for the study of wellbore instability, and the dynamic evolution simulation of rock burst was performed by means of Visual Basic and Matlab programming. The research suggests when the bottom hole is gradually approaching the high-pressure fracture trap, the difference between circumferential stress and radial stress of the crack face gradually increases, and the increasing shear stress caused by the difference between principal stresses leads to the compression-shear failure and the composite failure resulted from compression, shear and tension. Until the wellbore is communicated with the failure zone and the high pressure gas carrying plenty of debris is injected into the well, a large amount of energy is released to trigger bottom-hole rock burst. The research results systematically explain the abnormal changes of logging monitoring parameters in the well QL1. The results not only provide a theoretical basis for the prevention and control of rock burst, but also provide a new perspective for studying the dynamic instability of deep rock in the field of petroleum engineering. © 2020, Editorial Office of ACTA PETROLEI SINICA. All right reserved.

引用

页码：244 / 252

页数：8

共 20 条

[1] LIU Xiangjun, LUO Pingya, Rock mechanics and petroleum engineering, (2004)
[2] DENG Jin'gen, CHENG Yuanfang, CHEN Mian, Et al., Borehole stability prediction technology, (2008)
[3] GAO Jiajia, DENG Jin'gen, YAN Wei, Et al., Establishment of a prediction model for the borehole trajactory optimization based on controlling wellbore stability, Acta Petrolei Sinica, 37, 9, pp. 1179-1186, (2016)
[4] MA Tianshou, CHEN Ping, Study of meso-damage characteristics of shale hydration based on CT scanning technology, Petroleum Exploration and Development, 41, 2, pp. 227-233, (2014)
[5] MENG Yingfeng, WU Sujiang, CHEN Xingyuan, Et al., Analysis on the nitrogen drilling accident of well Qionglai 1, western Sichuan Basin (I): major inducement events, Natural Gas Industry, 35, 10, pp. 125-134, (2015)
[6] MENG Yingfeng, WU Sujiang, CHEN Xingyuan, Et al., Analysis on the nitrogen drilling accident of well Qionglai 1, western Sichuan Basin (II): restore of accident process and lessons to learn, Natural Gas Industry, 35, 10, pp. 135-144, (2015)
[7] MENG Yingfeng, LUO Chengbo, LI Gao, Et al., Dynamical evolution mechanism of sudden wellbore instability in nitrogen gas drilling and experimental research, Journal of Safety Science and Technology, 11, 5, pp. 64-69, (2015)
[8] CHANG Deyu, LI Gensheng, SHEN Zhonghou, Et al., Study of bottom-hole stress field with differential pressure of 3D in-situ stress under different drilling conditions, Rock and Soil Mechanics, 32, 5, pp. 1546-1552, (2011)
[9] ZHANG Hongyun, GAO Deli, GUO Boyun, Influence of the coefficient of thermal expansion on the stress of bottom hole rock in gas drilling, Journal of Southwest Petroleum University: Science & Technology Edition, 34, 4, pp. 88-93, (2012)
[10] SHI Xiangchao, TAO Zuwen, MENG Yingfeng, Et al., A bottomhole drillability model in spherical symmetric coordinates, Journal of Southwest Petroleum University: Science & Technology Edition, 38, 4, pp. 130-135, (2016)

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