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地质力学学报:2020,26(1):74-83
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四川盆地富顺-永川地区五峰组—龙马溪组应力场模拟及裂缝发育区预测
(1.中国石油大学(北京)地球科学学院, 北京 102249;2.中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249;3.中国石油西南油气田分公司页岩气研究院, 四川 成都 610051;4.中国石油青海油田勘探事业部, 甘肃 敦煌 736202)
Stress field simulation and fracture development prediction of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block, Sichuan Basin
(1.College of Geosciences, China University of Petroleum, Beijing 102249, China;2.State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;3.Shale Gas Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610051, Sichuan, China;4.Petroleum Exploration Division, Petro China Qinghai Oilfield, Dunhuang 736202, Gansu, China)
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投稿时间:2019-06-11    修订日期:2019-11-18
中文摘要: 岩石中构造裂缝主要受控于地层所处的区域构造应力场,地应力对油气的运移、成藏和分布有着重要的作用。通过应用ANSYS有限元数值模拟方法对四川盆地富顺-永川区块的五峰组-龙马溪组进行应力场模拟及分析研究、应用构造曲率法中的三点法对该层段页岩进行张裂缝发育情况预测研究、综合模拟结果与曲率计算数据对目的区域目的层段进行裂缝发育强度综合预测研究,结果表明富顺-永川区块五峰组-龙马溪组应力高值沿背斜走向分布的规律明显,研究区的东部及西南部的背斜应力值较其他区域背斜高;曲率高值沿背斜走向分布的规律明显,研究区东部及西南部背斜曲率值较其他区域背斜高;在现今应力的作用下,研究区背斜处裂缝发育程度较高,向斜处裂缝发育程度较低,研究区东部及西南部背斜裂缝发育程度较其他区域高。
Abstract:The tectonic fractures in rocks are mainly controlled by the regional tectonic stress field where the strata are located. Tectonic stress plays an important role in the migration, accumulation and distribution of oil and gas. The stress field of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block of the Sichuan Basin was simulated and analyzed by ANSYS finite element software; The three-point method in the method of structural curvature method was used to predict the development of cracks in the shale, and the comprehensive simulation results and curvature calculation data were used to predict the fracture intensity in the target area. The results proved that the distribution of the high stress value of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block is along the anticline, and the anticline stress values in the eastern and southwestern part of the study area are higher than those in other areas; the distribution of high curvature is along the anticline, and the curvature values of the anticline in the east and southwest of the study area are higher than those in other areas; the fracture in the anticline of the study area has a higher level of development, and it's lower in the syncline, at the same time it's higher in the anticline of the eastern and southwestern part of the study area than other areas under the current stress.
文章编号:     中图分类号:P618.13    文献标志码:
基金项目:中国石油天然气股份有限公司重大科技专项(2016E-0611);国家自然科学基金项目(41572099)
引用文本:
任浩林,刘成林,刘文平,杨熙雅,李文研.四川盆地富顺-永川地区五峰组—龙马溪组应力场模拟及裂缝发育区预测[J].地质力学学报,2020,26(1):74-83DOI:10.12090/j.issn.1006-6616.2020.26.01.008
REN Haolin,LIU Chenglin,LIU Wenping,YANG Xiya,LI Wenyan.Stress field simulation and fracture development prediction of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block, Sichuan Basin[J].,2020,26(1):74-83DOI:10.12090/j.issn.1006-6616.2020.26.01.008

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