气候变化领域集成服务门户(CCPortal): Mathematical model for calculating the horizontal principal stress of a faulted monoclinal structure in southwest Qaidam Basin; China

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DOI	10.1306/01211917156
	Mathematical model for calculating the horizontal principal stress of a faulted monoclinal structure in southwest Qaidam Basin; China
	Fan X.; Fan X.; Zhang Q.; Zhang Q.; Zhang Q.; Duan M.; Yang Y.; Duan Q.; Chen X.; Lv D.
发表日期	2019
ISSN	0149-1423
起始页码	2697
结束页码	2729
卷号	103 期号:11
英文摘要	Faulted monoclinal structures incorporate folds and faults. Their displacements cause stress release of differing degrees in various areas. Furthermore, the faults commonly extend to the deep strata, which may lead to the flow of boiling inclusions and localized thermal stresses. A complex distribution of in situ stress appears in such areas, which makes it challenging to drill wellbores. In this study, we first analyzed the geological structure and the factors influencing in situ stresses of a faulted monoclinal structure in southwest Qaidam Basin. Second, based on Huang's model, a mathematical model for calculating the horizontal principal stress of the faulted monoclinal structure was developed considering the stress release from fault and fold displacements and the outflow from boiling inclusions. Third, the magnitudes of the horizontal principal stresses of the study area were obtained using this new mathematical model, and the predicted values had an average error of 2.63% according to a comparison with the results of the hydraulic fracturing field measurements. Fourth, an in situ stress distribution in this area was established by combining the horizontal principal stresses' magnitudes and the maximum horizontal principal stress direction. Finally, based on the in situ stress distribution of the study area, the mud density and trajectory for drilling the third stage of well Z207 were determined. The field application revealed that the design parameters met the engineering requirements satisfactorily, which indicates that this mathematical model can predict the horizontal principal stress of the faulted monoclinal structure in southwest Qaidam Basin. © 2019 The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Stress concentration; Design parameters; Field application; Field measurement; Geological structures; Maximum horizontal principal stress; Monoclinal structures; New mathematical model; Principal stress; Infill drilling; complexity; design; drilling; error analysis; fold; hydraulic fracturing; in situ stress; mud; numerical model; outflow; parameterization; stress analysis; China; Qaidam Basin; Qinghai
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/143752
作者单位	State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University,, Chengdu, Sichuan, China; College of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan, China; Department of Civil, Geological and Mining Engineering, E cole Polytechnique de Montŕ eal, Montreal, QC, Canada; Oil and Gas Engineering Research Institute, China National Petroleum Corporation (CNPC), Jilin Oilfield Company, Songyuan, Jilin, China; Shale Gas Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, Sichuan, China; Drilling Technology Research Institute, CNPC Jilin Oilfield Company, Songyuan, Jilin, China; Drilling and Production Technology Institute, CNPC Qinghai Oilfield Company, Dunhuang, Gansu, China
推荐引用方式 GB/T 7714	Fan X.,Fan X.,Zhang Q.,et al. Mathematical model for calculating the horizontal principal stress of a faulted monoclinal structure in southwest Qaidam Basin; China[J],2019,103(11).
APA	Fan X..,Fan X..,Zhang Q..,Zhang Q..,Zhang Q..,...&Lv D..(2019).Mathematical model for calculating the horizontal principal stress of a faulted monoclinal structure in southwest Qaidam Basin; China.AAPG Bulletin,103(11).
MLA	Fan X.,et al."Mathematical model for calculating the horizontal principal stress of a faulted monoclinal structure in southwest Qaidam Basin; China".AAPG Bulletin 103.11(2019).