塔里木盆地卡塔克隆起卡1三维区块奥陶系鹰山组储层特征与影响因素
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摘要
奥陶系鹰山组一直是塔里木盆地油气勘探的重点层位。综合运用岩心、薄片、成像测井、分析测试以及三维地震资料,对鹰山组储层特征以及影响因素进行了分析。结果表明:鹰山组整体岩性以粉-细晶白云岩,砂屑灰岩,灰质白云岩为主,储集空间以溶蚀孔洞、裂缝为主;上部为风化壳岩溶储层,溶孔-裂缝发育,中下部为裂缝性储层,裂缝发育,纵向上具有上孔下缝特征,储层非均质性强;加里东中期I幕运动形成的构造不整合面是该区岩溶储层发育的重要因素;加里东中期—早海西期形成的断裂和构造裂缝是该区储层发育的关键;早二叠世时期与火山作用伴生的岩溶烘烤以及埋藏溶蚀作用对储层发育具有积极作用。
The Ordovician Yinshan Formation in Tarim basin has been regarded as the focus layer for breakthrough in oil and gas exploration.Through comprehensive use of cores,slices,logging,analytical and test data and three-dimensional seismic data,the authors analyzed the reservoir characteristics and influencing factors of Yinshan Formation.Some conclusions have been reached: the lithology of Yingshan Formation is generally composed of fine-grained dolomite,calcarenite and limy dolomite,whereas the reservoir space comprises mainly dissolved pores and cracks;the top of the Formation is the weathered crust reservoir with the development of dissolved pores and cracks,while the lower part of the Formation is the fractured reservoir,whose space is mainly cracks;in vertical direction,the upper part is mainly composed of pores and cracks,whereas the lower part comprises mainly cracks with strong heterogeneous nature;the tectonic unconformity formed in the first episode of the middle Caledonian tectonic movement seems to have been the important factor responsible for reservoir development;the faults and tectonic fractures formed during the middle Caledonian tectonic movement and the Early Sea West tectonic movement were the key factors for the reservoir development;during the early Permian period,the karst baking associated with volcanism and the burial dissolution exerted a positive effect on the reservoir development
The Ordovician Yinshan Formation in Tarim basin has been regarded as the focus layer for breakthrough in oil and gas exploration.Through comprehensive use of cores,slices,logging,analytical and test data and three-dimensional seismic data,the authors analyzed the reservoir characteristics and influencing factors of Yinshan Formation.Some conclusions have been reached: the lithology of Yingshan Formation is generally composed of fine-grained dolomite,calcarenite and limy dolomite,whereas the reservoir space comprises mainly dissolved pores and cracks;the top of the Formation is the weathered crust reservoir with the development of dissolved pores and cracks,while the lower part of the Formation is the fractured reservoir,whose space is mainly cracks;in vertical direction,the upper part is mainly composed of pores and cracks,whereas the lower part comprises mainly cracks with strong heterogeneous nature;the tectonic unconformity formed in the first episode of the middle Caledonian tectonic movement seems to have been the important factor responsible for reservoir development;the faults and tectonic fractures formed during the middle Caledonian tectonic movement and the Early Sea West tectonic movement were the key factors for the reservoir development;during the early Permian period,the karst baking associated with volcanism and the burial dissolution exerted a positive effect on the reservoir development
引文
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[12]沈安江,潘文庆,郑兴平,等.塔里木盆地下古生界岩溶型储层类型及特征[J].海相油气地质,2010,15(2):20-29.Shen Anjiang,Pan Wenqing,Zheng Xinping,et al.Types andcharacteristics of Lower Palaeozoic karst reservoirs in Tarim Basin[J].Marine Origin Petroleum Geology,2010,15(2):20-29(inChinese with English abstract).
[13]艾合买提江.阿不都热和曼,钟建华,李阳,等.碳酸盐岩裂缝与岩溶作用研究[J].地质论评,2008,54(4):485-493.Ahmatjan Abdurahman,Zhong Jianhua,LI Yang,et al.Study oneffect between karstification and fracture in carbonate rocks[J].Geological Review,2008,54(4):485-493(in Chinese with Englishabstract).
[2]赵宗举,吴兴宁,潘文庆,等.塔里木盆地奥陶纪层序岩相古地理[J].沉积学报,2009,27(5)939-954.Zhao Zongju,Wu Xingning,Pan Wenqing,et al.Sequencelithofacies paleogeography of Ordovician in Tarim Basin[J].ActaSedimentologica Sinica,2009,27(5)939-954(in Chinese withEnglish abstract).
[3]刘伟,张兴阳,顾家裕.塔里木盆地台盆区中西部中下奥陶统鹰山组沉积环境研究[J].沉积学报,2009,27(3):435-442.Liu Wei Zhang Xingyang Gu Jiayu.Sedimentary environment ofLower-Midle Ordovician Yingshan Formation in Mid-WesternTarim Basin[J].Acta Sedimentologica Sinica,2009,27(3):435-442(in Chinese with English abstract).
[4]陈景山,李忠,王振宇,等.塔里木盆地奥陶系碳酸盐岩古岩溶作用与储层分布[J].沉积学报,2007,25(6):858-868Chen Jingshan,Li Zhong,Wang Zhenyu,et al.Paleokarstificationand reservoir distribution of Ordovician Carbonates in Tarim Basin[J].Acta Sedimentologica Sinica,2007,25(6):858-868(in Chinesewith English abstract).
[5]倪新锋,张丽娟,沈安江,等.塔北地区奥陶系碳酸盐岩古岩溶类型、期次及叠合关系[J].中国地质,2009,36(6):1312-1321.Ni Xinfeng,Zhang Lijuan,Shen Anjiang,et al.Paleo-karstificationtypes,karstification periods and superimposition relationship ofOrdovician carbonates in northern Tarim Basin[J].Geology inChina,2009,36(6):1312-1321.
[6]韩剑发,于红枫,张海祖,等.塔中地区北部斜坡带下奥陶统碳酸盐岩风化壳油气富集特征[J].石油与天然气地质,2008,29(2):167-173.Han Jianfa,Yu Hongfeng,Zhang Haizu,et al.Characteristics ofhydrocarbon enrichment in the Lower Ordovician carbonate rockweathering crust on the northern slope zone of Tazhong area[J].Oil&Gas Geology,2008,29(2):167-173(in Chinese with Englishabstract).
[7]刘忠宝,孙华,于炳松,等.裂缝对塔中奥陶系碳酸盐岩储集层岩溶发育控制[J].新疆石油地质,2007,28(3):289-291.Liu Zhongbao,Sun Hua,Yu Bingsong,et al.The control of fractureson Karst in Ordovician carbonate Reservoirs in Tazhong Area,TarimBasin[J].Xinjiang Petroleum Geology,2007,28(3):289-291(inChinese with English abstract).
[8]钱一雄,陈跃,陈强路,等.塔中西北部奥陶系碳酸盐岩埋藏溶蚀作用[J].石油学报,2006,27(3):47-52.Qian Yixiong,Chen Yue,Chen Qianglu,et al.Generalcharacteristics of burial dissolution for Ordovician carbonatereservoirs in the northwest of Tazhong area[J].Acta Petrolei Sinica,2006,27(3):47-52(in Chinese with English abstract).
[9]吕修祥,杨宁,解启来,等.塔中地区深部流体对碳酸盐岩储层的改造作用[J].石油与天然气地质,2005,26(3):284-289.Lv Xiuxiang,Yang Ning,Xie Qilai,et al.Carbonate reservoirstransformed by deep fluid in Tazhong area[J].Oil&Gas Geology,2005,26(3):284-289(in Chinese with English abstract).
[10]马永生.碳酸盐岩储层沉积学[M].北京:地质出版社,1999:2-6.Ma Yongsheng.Carbonate Reservoirs Sedimentology[M].Beijing:Geological Publishing House,1999:2-6(in Chinese with Englishabstract).
[11]陈新军,蔡希源,纪友亮,等.塔中奥陶系大型不整合面与风化壳岩溶发育[J].同济大学学报(自然科学版),2008,35(8):1122-1127.Chen Xinju,Cai Xiyua,JI Youliang,et al.Relationship betweenlarge scale unconformity surface and weathering crust karst ofOrdovician in Tazhong[J].Journal of TongJi University(NaturalScience),2008,35(8):1122-1127(in Chinese with English abstract).
[12]沈安江,潘文庆,郑兴平,等.塔里木盆地下古生界岩溶型储层类型及特征[J].海相油气地质,2010,15(2):20-29.Shen Anjiang,Pan Wenqing,Zheng Xinping,et al.Types andcharacteristics of Lower Palaeozoic karst reservoirs in Tarim Basin[J].Marine Origin Petroleum Geology,2010,15(2):20-29(inChinese with English abstract).
[13]艾合买提江.阿不都热和曼,钟建华,李阳,等.碳酸盐岩裂缝与岩溶作用研究[J].地质论评,2008,54(4):485-493.Ahmatjan Abdurahman,Zhong Jianhua,LI Yang,et al.Study oneffect between karstification and fracture in carbonate rocks[J].Geological Review,2008,54(4):485-493(in Chinese with Englishabstract).
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