塔里木盆地麦盖提斜坡构造演化及油气地质意义
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摘要
为分析塔里木盆地麦盖提斜坡的有利成藏条件,并提出下一步有利区带和部署建议,从地震和钻井资料入手,运用叠合盆地构造解析方法,在动态分析麦盖提斜坡形成过程的基础上,分别研究了东、西两段的构造带特征与成因,并阐述其油气勘探意义。研究认为,多期构造演化与东西差异演化是东、西两段油气成藏条件、运聚背景和重点勘探层系明显不同的关键。西段处于斜坡背景上的海西晚期构造带,保存条件好,与断裂紧邻的上倾方向的上古生界岩性体是控制油气成藏与富集的关键因素。斜坡东段位于和田古隆起,玉北1井区构造处于加里东中、晚期与海西晚期的构造应力叠加区,更有利于奥陶系岩溶缝洞型储层的发育。玉北1井东部潜山带下奥陶统暴露区上覆一定厚度的地层,对溶蚀孔、洞、缝的有效保留更有利,也值得选择性探索。
In order to analyze the favorable conditions of hydrocarbon accumulation and identify favorable plays of Maigaiti slop in Tarim basin,we used the tectonic analytical method of superimposed basins to study the cha-racteristics and genesis of the eastern and western segments of the slope and discussed their hydrocarbon exploration significances based on integration of seismic and well data and analysis of the dynamic evolution of Maigaiti Slope.Multi-stage evolution and differential evolution are the key factors causing the obvious differences between the eastern and western segment in respects of hydrocarbon,migration and accumulation conditions and main exploration targets.The western segment in the Late Hercynian tectonic belts has good preservation conditions,and the up-dip upper Paleozoic lithologic body near the faults are key factor controlling hydrocarbon accumulation and enrichment.The eastern segment is located in the Hetian paleo-uplift,where Yubei-1 wellblock is placed in an area with the Middle and Late Caledonian tectonic stress superimposing with the Late Hercynian tectonic stress,providing more favorable conditions for the Ordovician fractured-vuggy reservoir development.The Lower Ordovician exposure in the buried hill zone to the east of Yubei-1 wellblock is covered by a seal of certain thickness which is favorable for the effective preservation of solution pores,vugs and fractures,thus is also a potential exploration target.
In order to analyze the favorable conditions of hydrocarbon accumulation and identify favorable plays of Maigaiti slop in Tarim basin,we used the tectonic analytical method of superimposed basins to study the cha-racteristics and genesis of the eastern and western segments of the slope and discussed their hydrocarbon exploration significances based on integration of seismic and well data and analysis of the dynamic evolution of Maigaiti Slope.Multi-stage evolution and differential evolution are the key factors causing the obvious differences between the eastern and western segment in respects of hydrocarbon,migration and accumulation conditions and main exploration targets.The western segment in the Late Hercynian tectonic belts has good preservation conditions,and the up-dip upper Paleozoic lithologic body near the faults are key factor controlling hydrocarbon accumulation and enrichment.The eastern segment is located in the Hetian paleo-uplift,where Yubei-1 wellblock is placed in an area with the Middle and Late Caledonian tectonic stress superimposing with the Late Hercynian tectonic stress,providing more favorable conditions for the Ordovician fractured-vuggy reservoir development.The Lower Ordovician exposure in the buried hill zone to the east of Yubei-1 wellblock is covered by a seal of certain thickness which is favorable for the effective preservation of solution pores,vugs and fractures,thus is also a potential exploration target.
引文
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[2]张善文,王英民,李群.应用坡折带理论寻找隐蔽油气藏[J].石油勘探与开发,2003,30(3):5-12.Zhang Shanwen,Wang Yingmin,Li Qun.Searching subtle trapsusing the theory of slope break[J].Petroleum Exploration and Development,2003,30(3):5-12.
[3]许效松,杜佰伟.碳酸盐岩地区古风化壳岩溶储层[J].沉积与特提斯地质,2005,25(3):1-7.Xu Xiaosong,Du Baiwei.The palaeoweathering crust-type karst reservoir rocks in carbonate rocks[J].Sedimentary Geology and Tethyan Geology,2005,25(3):1-7.
[4]王振宇,李凌,谭秀成,等.塔里木盆地奥陶系碳酸盐岩古岩溶类型识别[J].西南石油大学学报(自然科学版),2008,30(5):11-16.Wang Zhenyu,Li Ling,Tan Xiucheng,et al.Types and recog-nizable indicators of Ordovician carbonate rock okarstification in Tarim Basin[J].Journal of Southwest Petroleum University(Science&Technology Edition),2008,30(5):11-16.
[5]金之钧,云金表,周波.塔里木斜坡带类型、特征及其与油气聚集的关系[J].石油与天然气地质,2009,30(2):127-135.Jin Zhijun,Yun Jinbiao1,Zhou Bo.Types and characteristics of slope zones in Tarim Basin and their relationship with oil accu-mulation[J].Oil&Gas Geology,2009,30(2):127-135.
[6]贾承造.塔里木盆地构造特征与油气聚集规律[J].新疆石油地质,1999,20(3):177-183.Jia Chengzao.Structural characteristics and oil/gas accumula-tive regularity in Tarim Basin[J].Xinjiang Petroleum Geology,1999,20(3):177-183.
[7]吕修祥,金之钧,周新源,等.塔里木盆地轮南地区奥陶系碳酸盐岩油气富集特点[J].科学通报,2004,49(增刊1):54-58.Lu Xiuxiang,Jin Zhijun,Zhou Xinyuan,et al.The oil and gas accumulation characteristics of Ordovician carbonate rock in Lunnan area,Tarim Basin[J].Chinese Science Bulletin,2004,49(S1):54-58.
[8]蔡希源.塔里木盆地台盆区油气成藏条件与勘探方向[J].石油与天然气地质,2005,26(5):59-66.Cai Xiyuan.Reservoiring conditions and exploration targets in Tarim basin[J].Oil&Gas Geology,2005,26(5):59-66.
[9]何登发,李德生,童晓光,等.多期叠加盆地古隆起控油规律[J].石油学报,2008,9(4):475-488.He Dengfa,Li Desheng,Tong Xiaoguang,et al.Accumulation and distribution of oil and gas controlled by paleo-uplift in poly-history superimposed basin[J].Acta Petrolei Sinica,2008,9(4):475-488.
[10]周路.塔里木盆地麦盖提斜坡油气地质与勘探[M].北京:石油工业出版社,2006:6-40.Zhou Lu.Oil and gas geology and exploration of the Magaiti Slop,Tarim Basin[M].Beijing:Petroleum Industry Press,2006:6-40.
[11]范明,郑冰.麦盖提斜坡地层-岩性圈闭类型[J].石油实验地质,2001,23(1):38-40.Fan Ming,Zheng Bing.Types of stratigraphic-lithologic traps in the Maigaiti slope[J].Experimental Petroleum Geology,2001,23(1):38-40.
[12]郑显华.塔里木盆地西部巴楚-麦盖提地区石油地质特征及勘探建议[J].石油实验地质,1997,17(20):114-120.Zheng Xianhua.Petroleum geological characteristics of and ex-ploration proposals to Bachu-Maigaiti area of the West Tarim Basin[J].Experimental Petroleum Geology,1997,17(20):114-120.
[13]何登发,柳少波,李洪辉,等.塔里木盆地大油田的勘探方向--以麦盖提斜坡构造为例[J].勘探家,1999,4(2):57-64.He Dengfa,Liu Shaobo,Li Honghui,et al.Exploration direction of huge oil and gas fields in Tarim Basin[J].China Petrleum Exploration,1999,4(2):57-64.
[14]刘高波,施泽进,佘晓宇.巴楚-麦盖提的区域构造演化与油气分布规律[J].成都理工大学学报(自然科学版),2004,31(2):157-161.Liu Gaobo,Shi Zejin,She Xiaoyu.Regional tectonic evolution and distribution of Bachu-Markit[J].Journal of Chengdu University of Technology(Science&Technology Edition),2004,31(2):157-161.
[15]何登发,周新源,杨海军,等.塔里木盆地克拉通内古隆起的成因机制与构造类型[J].地学前缘(中国地质大学,北京),2008,15(2):207-221.He Dengfa,Zhou Xinyuan,Yang Haijun,et al.Formation me-chanism and tectonic types of intracratonic paleo-uplifts in the Tarim basin[J].Earth Science Frontiers,2008,15(2):207-221.
[16]吕海涛,张仲培,邵志兵,等.塔里木盆地巴楚-麦盖提早古生代古隆起的演化及其勘探意义[J].石油与天然气地质,2010,31(1):76-83.LüHaitao,Zhang Zhongpei,Shao Zhibing,et al.Structural evo-lution and exploration significance of the Early Paleozoic pa-laeouplifts in Bachu-Maigaiti area,the Tarim Basin[J].Oil&Gas Geology,2010,31(1):76-83.
[17]周新源,罗金海,王清华.塔里木盆地南缘冲断带构造特征及其油气地质特征[J].中国科学(D辑),2004,34(增刊Ⅰ):56-62.Zhou Xinyuan,Lou Jinhai,Wang Qinghua.Structural characteris-tics and petroleum geology of the thrust belts in southern Tarim Basin[J].Science in China(Series D),2004,34(SⅠ):56-62.
[18]张现军,王月华,玛丽克,等.塔里木盆地麦盖提斜坡西段上石炭统研究新进展[J].新疆石油地质,2006,27(1):56-58.Zhang Xianjuna,Wang Yuehua,Ma Likea,et al.Novel progress of Upper Carboniferous study in west section of Mageti Slope,Tarim Basin[J].Xinjiang Petroleum Geology,2006,27(1):56-58.
[19]何文渊,李江海,钱祥麟,等.塔里木盆地巴楚断隆中新生代的构造演化[J].北京大学学报(自然科学版),2000,36(4):539-545.He Wenyuan,Li Jianghai,Qian Xianglin,et al.The Meso-Ceno-zoic evolution of Bachu fault-uplift in Tarim Basin[J].Acta Scicentiarum Naturalum Universitis Pekinesis,2000,36(4):539-545.
[20]丁文龙,林畅松,漆立新,等.塔里木盆地巴楚隆起构造格架及形成演化[J].地学前缘,2008,15(2):242-251.Ding Wenlong,Lin Changsong,Qi Lixin,et al.Structural frame-work and evolution of Bachu uplift in Tarim basin[J].Earth Science Frontiers,2008,15(2):242-251.
[21]杨明慧,金之钧,吕修祥,等.塔里木盆地基底卷入扭压构造与巴楚隆起的形成[J].地质学报,2007,81(2):158-164.Yang Minghui,Jin Zhijun,LüXiuxiang,et al.Basement-in-volved transpressional structure and the formation of the Bachu Uplift,Tarim Basin,northwestern China[J].Acta Geologica Sinica,2007,81(2):158-164.
[22]杨海军,李勇,单家增,等.岩石物性对油气成藏过程的控制作用--以塔里木盆地麦盖提斜坡为例[J].岩石学报,2007:23(4):824-830.Yang Haijun,Li Yong,Shan Jiazeng,et al.Controlled effort of rock physical properties to migration and accumulation process of oil and gas:an example from Maigaiti slope,Tarim basin,China[J].Acta Petrologica Sinica,2007,23(4):824-830.
[23]蒋凌志,于德龙.塔里木盆地麦盖提斜坡石炭系生屑灰岩段储层特征研究[J].北京大学学报(自然科学版),2003,39(3):428-434.Jiang Lingzhi,Yu Delong.Research on Reservoir Characteristics of Carboniferous bioclast limestone member in Maigaiti Slope,Tarim Basin[J].Acta Scicentiarum Naturalum Universitis Pe-kinesis,2003,39(3):428-434.
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