A study on differences of shale gas enrichment and preservation conditions：Taking the Jiaoshiba-Wulong area as an example
DING Jiatong1,2, CHEN Kongquan1,2, TANG Jiguang2, TUO Xiusong1,2, ZHANG Douzhong1,2
1. Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan, Hubei 430100, China; 2. School of Geosciences, Yangtze University, Wuhan, Hubei 430100, China
Abstract：Jiaoshiba-Wulong area is located in the eastern margin of Sichuan Basin， which has a good geological basis for shale gas reservoir. However， there is a significant difference in shale gas productivity between the inner and outer margin of the eastern Sichuan basin during field operation. Based on the tectonic differences， the Qiyueshan fault is taken as the boundary， and the study area is divided into Jiaoshiba tectonic belt and Wulong tectonic belt. For the study of tectonic deformation in the area differences with shale gas preservation conditions， geological data of tectonic area， in fine interpretation of seismic data， drilling data， the result shows that the coke structure of rockfill dam with rich gas are mainly distributed in the structure of positive structure—a box-like anticline and weak type circular anticline， wulong structural belt in development have negative structure—residual syncline. In this paper， a differential enrichment model is established to compare the differences in the preservation conditions of shale gas under different tectonic forms. The main controlling factor of shale gas preservation in box anticlines is fault， the fault of weakly modified arc anticlines is related to derived tensile structures， and the main controlling factor of residual synclines is the normal stress of foliation plane.
丁佳彤, 陈孔全, 汤济广, 庹秀松, 张斗中. 页岩气富集与保存条件差异研究——以焦石坝—武隆地区为例[J]. 石油地球物理勘探, 2023, 58(6): 1472-1480.
DING Jiatong, CHEN Kongquan, TANG Jiguang, TUO Xiusong, ZHANG Douzhong. A study on differences of shale gas enrichment and preservation conditions：Taking the Jiaoshiba-Wulong area as an example. Oil Geophysical Prospecting, 2023, 58(6): 1472-1480.
王志刚.涪陵焦石坝地区页岩气水平井压裂改造实践与认识[J].石油与天然气地质,2014,35(3): 425-430.WANG Zhigang.Practice and cognition of shale gas horizontal well fracturing stimulation in Jiaoshiba of Fuling area[J].Oil & Gas Geology,2014,35(3): 425-430.
[2]
何贵松,何希鹏,高玉巧,等.中国南方3套海相页岩气成藏条件分析[J].岩性油气藏,2019,31(1): 57-68.HE Guisong,HE Xipeng,GAO Yuqiao,et al.Analysis of accumulation conditions of three sets of marine shale gas in southern China[J].Lithologic Reservoirs,2019,31(1): 57-68.
[3]
汤济广,汪凯明,秦德超,等.川东南南川地区构造变形与页岩气富集[J].地质科技通报,2021,40(5): 11-21.TANG Jiguang,WANG Kaiming,QIN Dechao,et al.Tectonic deformation and its constraints to shale gas accumulation in Nanchuan area,southeastern Sichuan Basin[J].Bulletin of Geological Science and Techno-logy,2021,40(5): 11-21.
[4]
唐建信.利用地震品质因子Q比例的分布特征预测南川页岩气藏保存条件[J].石油与天然气地质,2019,40(4): 930-937.TANG Jianxin.Prediction of preservation conditions for Nanchuan shale gas reservoirs based on distribution of seismic quality factor Q[J].Oil & Gas Geology,2019,40(4): 930-937.
[5]
张晓明,石万忠,舒志国,等.涪陵地区页岩含气量计算模型及应用[J].地球科学,2017,42(7): 1157-1168.ZHANG Xiaoming,SHI Wanzhong,SHU Zhiguo,et al.Calculation model of shale gas content and its application in Fuling area[J].Earth Science,2017,42(7): 1157-1168.
[6]
王庆波,刘若冰,李春燕,等.四川盆地及周缘五峰—龙马溪组页岩气地质条件研究[J].重庆科技学院学报(自然科学版),2012,14(5): 17-21.WANG Qingbo,LIU Ruobing,LI Chunyan,et al.Geologic condition of the Upper Ordovician-Lower Silurian shale gas in the Sichuan Basin and its periphery[J].Journal of Chongqing University of Science and Technology(Natural Sciences Edition),2012,14(5): 17-21.
[7]
王琳,刘冲,张金川,等.渝东南地区页岩气勘探开发现状及下一步勘探方向思考[J].资源与产业,2018,20(5): 46-52.WANG Lin,LIU Chong,ZHANG Jinchuan,et al.Exploration situation and outlook of shale gas in Southeast Chongqing[J].Resources & Industries,2018,20(5): 46-52.
[8]
庹秀松,陈孔全,罗顺社,等.渝东大焦石坝地区差异构造变形[J].石油与天然气地质,2019,40(5): 1074-1083.TUO Xiusong,CHEN Kongquan,LUO Shunshe,et al.Differential structural deformation of the Dajiaoshiba area,East Chongqing[J].Oil & Gas Geology,2019,40(5): 1074-1083.
[9]
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): 161-174.MEI Lianfu,LIU Zhaoqian,TANG Jiguang,et al.Mesozoic intra-continental progressive deformation in wes-tern Hunan-Hubei-Eastern Sichuan provinces of China: evidence from apatite fission track and balanced cross-section[J].Earth Science,2010,35(2): 161-174.
[10]
王平,刘少峰,郜瑭珺,等.川东弧形带三维构造扩展的AFT记录[J].地球物理学报,2012,55(5): 1662-1673.WANG Ping,LIU Shaofeng,GAO Tangjun,et al.Cretaceous transportation of Eastern Sichuan arcuate fold belt in three dimensions: insights from AFT analysis[J].Chinese Journal of Geophysics,2012,55(5): 1662-1673.
[11]
刘娜娜.南川地区龙马溪组优质页岩段微观孔隙结构特征[J].石油地质与工程,2021,35(4): 21-25.LIU Nana.Micro pore structure characteristics of high quality shale section of Longmaxi formation in Nanchuan area[J].Petroleum Geology and Engineering,2021,35(4): 21-25.
[12]
ZHANG Y,LIU L.Insights into the formation mechanism of low water saturation in Longmaxi shale in the Jiaoshiba area,Eastern Sichuan basin[J].Journal of Earth Science,2021,32(4): 863-871.
[13]
ZHAO H,LIU W,WANG X.The openness degree study of the Jiaoshiba shale gas,Sichuan basin,China—potential factor responsible for reversed isotope series[J].Acta Geologica Sinica (English Edition),2018,92(6): 2457-2459.
[14]
陈曼霏.涪陵平桥和梓里场区块五峰组—龙马溪组一段页岩孔隙结构和吸附性能研究[D].湖北武汉: 中国地质大学,2019.CHEN Manfei.Pore Structure and Adsorption Capa-city of Wufeng Formation and Member 1 of Longmaxi Formation Shale Reservoir in Pingqiao Block and Zilichang Block[D].China University of Geosciences,Wuhan,Hubei,2019.
[15]
NIE H,LI P,DANG W,et al.Enrichment characteristics and exploration directions of deep shale gas of Ordovician-Silurian in the Sichuan basin and its surroun-ding areas,China[J].Petroleum Exploration and Deve-lopment,2022,49(4): 744-757.
[16]
何丽.涪陵地区乌江断裂带构造变形特征对页岩气藏影响研究[D].湖北荆州: 长江大学,2021.
[17]
刘鹏,吴佩津,彭钰洁.焦石坝地区构造特征及页岩气保存模式研究[J].特种油气藏,2018,25(2): 37-41.LIU Peng,WU Peijin,PENG Yujie.Structure characterization and shale gas preservation pattern in Jiaoshiba[J].Special Oil & Gas Reservoirs,2018,25(2): 37-41.
[18]
陈孔全,李君军,唐协华,等.中扬子地区五峰组—龙马溪组页岩气成藏关键地质因素[J].天然气工业,2020,40(6): 18-30.CHEN Kongquan,LI Junjun,TANG Xiehua,et al.Key geological factors for shale gas accumulation in the Wufeng-Longmaxi Fms in the central Yangtze area[J].Natural Gas Industry,2020,40(6): 18-30.
[19]
陈孔全,张斗中,庹秀松.中扬子地块西部地区结构构造与页岩气保存条件的关系[J].天然气工业,2020,40(4): 9-19.CHEN Kongquan,ZHANG Douzhong,TUO Xiusong.Relationship between geological structure and marine shale gas preservation conditions in the western middle Yangtze block[J].Natural Gas Industry,2020,40(4): 9-19.
[20]
冯动军,胡宗全,李双建,等.川东盆缘带龙马溪组关键保存要素对页岩气富集的控制作用[J].地质论评,2021,67(1): 144-158.FENG Dongjun,HU Zongquan,LI Shuangjian,et al.Controlling effect of key preservation elements on shale gas enrichment in Longmaxi formation,eastern marginal zone of Sichuan basin[J].Geological Review,2021,67(1): 144-158.
[21]
张海涛,张颖,何希鹏,等.渝东南武隆地区构造作用对页岩气形成与保存的影响[J].中国石油勘探,2018,23(5): 47-56.ZHANG Haitao,ZHANG Ying,HE Xipeng,et al.The effect of tectonism on shale gas formation and preservation in Wulong area,southeastern Chongqing[J].China Petroleum Exploration,2018,23(5): 47-56.
[22]
魏峰,陈孔全,庹秀松.川东齐岳山断层北部差异构造变形特征[J].石油实验地质,2019,41(3): 348-354,362.WEI Feng,CHEN Kongquan,TUO Xiusong.Diffe-rential tectonic deformation in the northern Qiyueshan Fault,eastern Sichuan Basin[J].Petroleum Geology & Experiment,2019,41(3): 348-354,362.
[23]
ZHANG Y,JIN Z,CHEN Y,et al.Pre-stack seismic density inversion in marine shale reservoirs in the southern Jiaoshiba area,Sichuan basin,China[J].Petroleum Science,2018,15(3): 484-497.
