CONTROLLING OF STRUCTURAL STRESS FIELD TO THE FRACTURES IN XUANHAN-DAXIAN REGION, NORTHEASTERN SICHUAN BASIN, CHINA
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摘要: 川东北宣汉-达县地区晚白垩世受到南东方向的挤压作用，始新世晚期-渐新世早期受到北东方向的挤压作用，两期构造活动导致宣汉-达县地区下三叠统飞仙关组碳酸盐岩中形成构造裂缝，对油气藏开发产生较大的影响。在考虑岩层与岩层之间相互影响的基础上，结合共轭节理和机械双晶的分析结果，利用三维有限元分析技术，计算宣汉-达县地区飞仙关组古构造应力大小，获得了两期古构造应力场的分布特征。通过岩石破裂阈值的限定，对普光、毛坝区块构造裂缝（张裂缝和剪裂缝）的发育区域进行预测，依据综合破裂率对岩层破裂强度进行评价，为提高裂缝钻遇率，降低勘探开发风险提供了科学的地质依据。Abstract: Structural stress field is one of the main reasons on fracture formation. It is the key of prediction structural fracture that paleostructure stress field is microscopically quantitative calculated.So we can well understand the fracture distribution in underground strata based on careful analysis to geological structure and numerical model coincides with the practice about the region of interest.It was influenced due to squeezing process from the SE direction during Late Crataceous and compressed from the NE direction in the period of Late Eocene-Early Oligocene in the Xuanhan-Daxian area of the northeast of Sichuan, China. The structural fracture development in Feixianguan formation in Lower Triassic series was effected by the two periods of structural action in Xuanhan-Daxian region. The fracture is an important geologic factor affecting the development of the oilfield. Through analysis of interaction in rock layers, calculation results on conjugate joints and mechanical twinning and using three dimensional finite element analysis method, we have obtained paleostructure stress in Feixianguan Formation of Xuanhan-Daxian region. We well know the distribution feature of paleostructure stress on the two periods. By threshold value-limited of the carbonatite burst, fracture area in Puguang and Maobawe blocks was predicted prediction. The integrated fracture rates give the basis to evaluate fracture strength. It provides the scientific geological basis for increasing the rate of drilling fractures and reducing the risk and cost of exploration and development.
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图 1 川东北宣汉—达县地区地质构造示意图
Figure 1. The schematic diagram on Xuanhan-Daxian region, Northeastern Sichuan Basin
图 2 大巴山构造带与江南-雪峰构造带活动时序[16]
Figure 2. Ages of evolutionary characteristics in Daba Mountain and Jiangnan-Xuefeng tectonic zones
图 3 川东北宣汉—达县地区构造层(NM-00-44)
Figure 3. Structural layeres in Xuanhan-Daxian region, Northeastern Sichuan Basin
图 4 宣汉—达县地区数值模拟区域
Figure 4. The numerical calculation domain for Xuanhan-Daxian region
图 5 宣汉—达县地区三维有限元分析物理模型
Figure 5. Three dimensional finite element analysis of physical models on Xuanhan-Daxian region
图 6 宣汉—达县地区最大剪应力三维分布图
Figure 6. The maximum shear stress three dimension distribution of Xuanhan-Daxian region
图 7 飞仙关组燕山晚期最大主应力分布图
Figure 7. The maximum principal stress distribution of Feixianguan formation in the Late Yanshan epoch
图 8 飞仙关组燕山晚期最大剪应力分布图
Figure 8. The maximum shear stress distribution of Feixianguan formation in the Late Yanshan epoch
图 9 飞仙关组燕山晚期最大主应变量分布图
Figure 9. The maximum principal strain distribution of Feixianguan formation in the Late Yanshan epoch
图 10 飞仙关组喜马拉雅期最大主应力分布图
Figure 10. The maximum principal stress distribution of Feixianguan formation in the Himalayan epoch
图 11 飞仙关组喜马拉雅期最大剪应力平面分布图
Figure 11. The maximum shear stress distribution of Feixianguan formation in the Himalayan epoch
图 12 飞仙关组喜马拉雅期最大主应变量平面分布图
Figure 12. The maximum principal strain distribution of Feixianguan formation in the Himalayan epoch
图 13 普光-毛坝区块飞仙关组燕山晚期裂缝发育区
Figure 13. The fracture distributions of Feixianguan Formation in the Puguang-Maoba block during Late Yanshan epoch
图 14 普光-毛坝区块飞仙关组破裂程度
Figure 14. Fracturing degrees of Feixianguan Formation in the Puguang-Maoba block
图 15 普光-毛坝区块飞仙关组喜马拉雅期裂缝发育区
Figure 15. The fracture distributions of Feixianguan Formation in the Puguang-Maoba block during Himalayan epoch
图 16 普光、毛坝区块岩心裂缝密度统计
Figure 16. Fracture density statistic to cores in the Puguang and Maoba blocks
表 1 研究区力学层划分
Table 1. Mechanical layers division about study area
表 2 宣汉—达县地区各个力学层力学物理参数
Table 2. Physical and mechanical Parameters of Mechanical layers on Xuanhan-Daxian region
表 3 宣汉—达县地区物理模型边界条件
Table 3. The choice boundary conditions of physical models on Xuanhan-Daxian region
表 4 利用共轭角计算燕山晚期、喜马拉雅期最大差应力值
Table 4. Maximum differential stresses calculated by using conjugate angle in the Late Yanshan and Himalayan
表 5 利用方解石机械双晶计算喜马拉雅期差应力
Table 5. The differential stresses using calcite mechanicaltwinning in the Himalayan epoch
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[1] 马永生, 郭旭升, 郭彤楼, 等.四川盆地普光大型气田的发现与勘探启示[J].地质论评, 2005, 51(4):477~480. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200504020.htmMA Yong-sheng, GUO Xu-sheng, GUO Tong-lou, et al. Discovery of the large-scale Puguang gas field in the Sichuan basin and its enlightenment for hydrocarbon prospecting[J]. Geological Review, 2005, 51(4):477~480. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200504020.htm [2] 倪新锋, 陈洪德, 田景春, 等.川东北地区长兴组-飞仙关组沉积格局及成藏控制意义[J].石油与天然气地质, 2007, 28(4):458~465. doi: 10.11743/ogg20070403NI Xin-feng, CHEN Hong-de, Tian Jing-chun, et al. Sedimentary framework of Changxing-Feixianguan formations and its control on reservoiring in northeastern Sichuan basin[J]. Oil & Gas Geology, 2007, 28(4):458~465. doi: 10.11743/ogg20070403 [3] 郑荣才, 罗平, 文其兵, 等.川东北地区飞仙关组层序-岩相古地理特征和鲕滩预测[J].沉积学报, 2009, 27(1):1~8. http://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200901002.htmZHENG Rong-cai, LUO Ping, WEN Qi-bing, et al.Characteristics of sequence-based lithofacies and paleogeography, and prediction of oolitic shoal of the Feixianguan Formation in the Northeastern Sichuan[J]. Acta Sedimentologica Sinica, 2009, 27(1):1~8. http://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200901002.htm [4] 李淑荣, 朱留方, 李国雄, 等.川东北海相碳酸盐岩储层测井评价技术[J].测井技术, 2008, 32(4):337~341. http://www.cnki.com.cn/Article/CJFDTOTAL-CJJS200804016.htmLI Shu-rong, ZHU Liu-fang, LI Guo-xiong, et al. Log evaluation technique of marine carbonate reservoir in Northeast Sichuan[J]. Well Logging Technology, 2008, 32(4):337~341. http://www.cnki.com.cn/Article/CJFDTOTAL-CJJS200804016.htm [5] 武丽, 董宁, 朱生旺.川东北通南巴构造带飞仙关组鲕滩储层预测[J].石油物探, 2009, 48(3):277~284. http://www.cnki.com.cn/Article/CJFDTOTAL-SYWT200903014.htmWU Li, DONG Ning, ZHU Sheng-wang. The oolite beach reservoir prediction at Feixianguan Formation in Tongnanba structural belt, Northeast Sichuan Province[J]. Geophysical Prospecting for Petroleum, 2009, 48(3):277~284. http://www.cnki.com.cn/Article/CJFDTOTAL-SYWT200903014.htm [6] 秦建中, 付小东, 腾格尔.川东北宣汉-达县地区三叠-志留系海相优质烃源层评价[J].石油实验地质, 2008, 30(4):368~374. http://www.cnki.com.cn/Article/CJFDTOTAL-SYSD200804011.htmQIN Jian-zhong, FU Xiao-dong, Tenger. Evaluation of the excellent Triassic to Silurian marian hydrocarbon source rocks in Xuanhan-Daxian area of Northeast Sichuan basin[J]. Petroleum Geology & Experiment, 2008, 30(4):368~374. http://www.cnki.com.cn/Article/CJFDTOTAL-SYSD200804011.htm [7] 唐大卿, 陈新军, 张先平.川东北宣汉-达县地区断裂系统及构造演化[J].石油实验地质, 2008, 30(1):58~63. doi: 10.11781/sysydz200801058TANG Da-qing, CHEN Xin-jun, ZHANG Xian-ping. Fault systems and their tectonic evolution in Xuanhan-Daxian area, the northeastern Sichuan basin[J]. Petroleum Geology & Experiment, 2008, 30(1):58~63. doi: 10.11781/sysydz200801058 [8] 郭彤楼, 张元春, 邹华耀.川东北碳酸盐岩层系现今应力场与裂缝特征[J].断块油气田, 2010, 17(6):718~721. http://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201006020.htmGUO Tong-lou, ZHANG Yuan-chun, ZOU Hua-yao. Present stress field and fracture characteristics of marine carbonate reservoir in Northeast Sichuan[J]. Fault-Block Oil & Gas Field, 2010, 17(6):718~721. http://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201006020.htm [9] 乐光禹.大巴山造山带及其前陆盆地的构造特征和构造演化[J].矿物岩石, 1998, 18(增刊):8~15. http://www.cnki.com.cn/Article/CJFDTOTAL-KWYS8S1.001.htmYUE Guang-yu. Tectonic characteristics and tectonic evolution of Dabashan orogenic belt and its foreland basin[J]. Journal of Mineralogy and Petrology, 1998, 18(Supp.):8~15. http://www.cnki.com.cn/Article/CJFDTOTAL-KWYS8S1.001.htm [10] 梅廉夫, 刘昭茜, 汤济广, 等.湘鄂西-川东中生代陆内递进扩展变形:来自裂变径迹和平衡剖面的证据[J].地球科学:中国地质大学学报, 2010, 35(2):161~170. http://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201002000.htmMEI Lian-fu, LIU Zhao-qian, Tang Ji-guang, et al. Mesozoic intra-continental progressive deformation in Western Hunan-Hubei-Eastern Sichuan Provinces of China:evidence from apatite fission track and balanced cross-section[J]. Earth Science:Journal of China University of Geosciences, 2010, 35(2):161~170. http://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201002000.htm [11] 刘和甫, 梁慧社, 李晓清, 等.中国东部中新生代裂陷盆地与伸展山岭耦合机制[J].地学前缘, 2000, 7(4):477~486. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200004025.htmLIU He-fu, LIANG Hui-she, LI Xiao-qing, et al. The coupling mechanisms of Mesozoic-Cenozoic rift basins and extensional mountain system in eastern China[J]. Earth Science Frontiers, 2000, 7(4):477~486. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200004025.htm [12] 董树文, 施炜, 张岳桥, 等.大巴山晚中生代陆内造山构造应力场[J].地球学报, 2010, 31(6):769~780. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201006001.htmDONG Shu-wen, SHI Wei, ZHANG Yue-qiao, et al. The tectonic stress field in the Dabashan orogen resulting from Late Mesozoic intra-continental orogeny[J]. Acta Geoscientica Sinica, 2010, 31(6):769~780. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201006001.htm [13] 刘树根, 李智武, 刘顺, 等.大巴山前陆盆地-冲断带的形成演化[M].北京:地质出版社, 2006:11~48.LIU Shu-gen, LI Zhi-wu, LIU Shun, et al. Formation and evolution of Dabashan foreland basin and fold and thrust belt, Sichuan[M]. Beijing:Geological Publishing House, 2006:11~48. [14] 何建坤, 卢华复, 朱斌.东秦岭造山带南缘北大巴山构造反转及其动力学[J].地质科学, 1999, l34(2):139~153. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKX902.001.htmHE Jian-kun, LU Hua-fu, ZHU Bin. The tectonic inversion and its geodynamic processes in northern Daba Mountains of eastern Qinling orogenic belt[J]. Chinese Journal of Geology, 1999, 34(2):139~153. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKX902.001.htm [15] 汪泽成, 赵文智, 徐安娜, 等.四川盆地北部大巴山山前带构造样式与变形机制[J].现代地质, 2006, 20(3):429~435. http://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ200603009.htmWANG Ze-cheng, ZHAO Wen-zhi, XU An-na, et al. Structure styles and their deformation mechanisms of Dabashan foreland thrust belt in the north of Sichuan Basin[J]. Geoscience, 2006, 20(3):429~435. http://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ200603009.htm [16] 沈传波, 梅廉夫, 徐振平, 等.大巴山中-新生代隆升的裂变径迹证据[J].岩石学报, 2007, 23(11):2901~2910. doi: 10.3969/j.issn.1000-0569.2007.11.020SHEN Chuan-bo, MEI Lian-fu, XU Zhen-ping, et al. Fission track thermochronology evidence for Mesozoic-Cenozoic uplifting of Daba Mountain, central China[J]. Acta Petrologica Sinica, 2007, 23(11):2901~2910. doi: 10.3969/j.issn.1000-0569.2007.11.020 [17] 黄继钧.宣汉双石庙地区纵弯褶皱叠加特征及应力场、应变场分析[J].四川地质学报, 1992, 12(2):92~100. http://www.cnki.com.cn/Article/CJFDTOTAL-SCDB199202001.htmHUANG Ji-jun. Superposition characteristics, stress and strain fields of longitudinal folds in Shuangshimiao region, Xuanhan[J]. Acta Geologica Sichuan, 1992, 12(2):92~100. http://www.cnki.com.cn/Article/CJFDTOTAL-SCDB199202001.htm [18] 丁中一, 钱祥麟, 霍红.构造裂缝定量预测的一种新方法——二元法[J].石油与天然气地质, 1998, 19(1):1~17. doi: 10.11743/ogg19980101DING Zhong-yi, QIAN Xiang-lin, HUO Hong. A new method for quantitative prediction of tectonic fractures two factor method[J]. Oil & Gas Geology, 1998, 19(1):1~17. doi: 10.11743/ogg19980101 [19] Andreas H, Michal N.Stress and fracture prediction in inverted half-graben structures[J]. Journal of Structural Geology. 2008.30:81~97 doi: 10.1016/j.jsg.2007.10.006 [20] 王喜双, 李晋超, 王绍民, 等.塔里木盆地构造应力场与油气聚集[J].石油学报, 1997, 18(1):23~28. doi: 10.7623/syxb199701004WANG Xi-shuang, LI Jin-chao, WANG Shao-min, et al. Oil and gas accumulation and structural stress field in Tarim Basin[J]. Acta Petrolei Sinica, 1997, 18(1):23~27 doi: 10.7623/syxb199701004 [21] 谭成轩.三维应力场数值模拟在油气运聚分析中的应用[J].新疆石油地质, 1999, 20(6):455~458. http://www.cnki.com.cn/Article/CJFDTOTAL-XJSD199906000.htmTAN Cheng-xuan. The application of three dimension field numeric simulation in hydrocarbon migration and accumulation analyses[J]. Xinjiang Petroleum Geology, 1999, 20(6):455~458. http://www.cnki.com.cn/Article/CJFDTOTAL-XJSD199906000.htm [22] Thomas H, Armin I K, Bj?rn W. Finite element analysis and ray tracing modeling of petroleum[J]. Marine and Petroleum Geology, 2000, 17(7):815~820. doi: 10.1016/S0264-8172(99)00061-6 [23] Smart K J, Ferrill D A, Morris A P. Impact of interlayer slip on fracture prediction from geomechanical models of fault-related folds[J]. AAPG Bulletin, 2009, 93(11):1447~1458. doi: 10.1306/05110909034 [24] 丁文龙, 樊太亮, 黄晓波, 等.塔里木盆地塔中地区上奥陶统古构造应力场模拟与裂缝分布预[J].地质通报, 2011, 30(4):588~594. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201104018.htmDING Wen-long, FAN Tai-liang, HUANG Xiao-bo, et al. Upper Ordovician paleo tectonic stress field simulating and fracture distribution forecasting in Tazhong area of Tarim Basin, Xinjiang, China[J]. Geological Bulletin of China, 2011, 30(4):588~594. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201104018.htm [25] Oda A. An equivalent continuum model for coupled stress and fluid flow in jointed rock masses[J]. Water Resource Research, 1986, 22(13):1845~1868. doi: 10.1029/WR022i013p01845 [26] 董平川, 徐小荷.储层流固耦合的数学模型及其有限元方程[J].石油学报, 1998, 19(1):64~69. doi: 10.7623/syxb199801012DONG Ping-chuan, XU Xiao-he. The fully coupled mathematical model of the fluid solid in an oil reservoir and its finite element equations[J]. Acta Petrolel Sinica, 1998, 19(1):64~69. doi: 10.7623/syxb199801012 [27] 田宜平, 刘雄, 李星, 等.构造应力场三维数值模拟的有限单元法[J].地球科学:中国地质大学学报, 2011, 36(2):375~380. http://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201102026.htmTIAN Yi-ping, LIU Xiong, LI Xing, et al. Finite element method of 3-D numerical simulation on tectonic stress field[J]. Earth Science:Journal of China University of Geosciences, 2011, 36(2):375~380. http://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201102026.htm [28] 陈庆宣, 王维襄, 孙叶, 等.地质力学的方法与实践(第三篇):岩石力学与构造应力场分析[M].北京:地质出版社, 1996:21~32.CHEN Qing-xuan, Wang Wei-xiang, SUN Ye, et al. The method and practice of geomechanics (Volume Ⅲ):Rock mechanics and analysis tectonics stress[M]. Beijing:Geological Publishing House, 1996:21~32. [29] 万天丰.古构造应力场[M].北京:地质出版社, 1988:85~115.WAN Tian-feng. Paleo-tectonic stress fields[M]. Beijing:Geological Publishing House, 1988:85~115. [30] 马永生, 郭彤楼, 赵雪凤, 等.普光气田深部优质白云岩储层形成机制[J].中国科学(D辑):地球科学, 2007, 37(增刊Ⅱ):43~52. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=jdxk2007s2005&dbname=CJFD&dbcode=CJFQMA Yong-sheng, GUO Tong-lou, ZHAO Xue-feng, et al. Formation mechanism of high porosity and permeability dolomites deeply buried in Puguang gas pool[J]. Science in China (Series D):Earth Sciences, 2007, 37(Supp.Ⅱ):43~52. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=jdxk2007s2005&dbname=CJFD&dbcode=CJFQ -
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