鄂尔多斯盆地镇原—泾川地区断层特征及控油意义
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摘要
通过综合解释镇原—泾川地区的钻井和三维地震资料,分析了走滑断层的分布规律、形成期、应力性质及其对长8油藏和高产井的控制作用,得出以下认识:(1)研究区在印支期的NE-SW向挤压作用力下形成了NEE和NNE向"X"型共轭剪切断层,在燕山期的SE向右旋压扭作用力下形成NW向断层,NEE向断层持续活动,NNE向断层活动不明显;(2)走滑断层分为Ⅰ、Ⅱ、Ⅲ等3类,其中Ⅰ类自奥陶系及以下地层断至白垩系及以上地层,平面延伸最长,断开地层最厚,在平面上共发育NW和NEE向两组断裂带,Ⅱ类自三叠系内部断至白垩系及以上地层,在平面上主要呈NE向延伸,Ⅲ类自奥陶系及以下地层断至中、上二叠统,在平面上主要呈NNE向延伸;(3)高产水平井均沿Ⅰ类走滑断层分布,沿Ⅱ、Ⅲ类走滑断层分布的长8砂岩多为水层或含油水层。
With the comprehensive interpretation of 3-Dseismic and drilling data in Zhenyuan-Jingchuan survey,we analyze the distribution,formation period,stress nature of the strike-slip faults,and its oil-control effect on the Chang-8reservoir,and obtain the following observations:(1)The NEE-NNE X conjugate faults were formed under the NE-trending compressive forces during the Indosinian period,the NW-SE and NE-SW strike-slip faults were formed under the SE dextral shear forces during Yanshanian periods,the NEE trending faults are stronger than the NNE trending faults;(2) The strike-slip faults can be divided into 3classes,the class Ⅰ strike-slip faults cut the strata from the Ordovician through the Cretaceous,which developed two sets of the upright shear faults in the NW and the NEE directions.The Class Ⅱ strike-slip faults disconnected the strata from the internal Triassic through the Cretaceous,extending in the NE direction.The Class Ⅲ strike-slip faults cut through the strata from the Ordovician to the internal Permian,extending in the NEE direction;(3)High-yielding wells are distributed along the ClassⅠ strike-slip faults,and the water or oil-water layers are distributed along Class Ⅱ and Class Ⅲstrike-slip faults.
With the comprehensive interpretation of 3-Dseismic and drilling data in Zhenyuan-Jingchuan survey,we analyze the distribution,formation period,stress nature of the strike-slip faults,and its oil-control effect on the Chang-8reservoir,and obtain the following observations:(1)The NEE-NNE X conjugate faults were formed under the NE-trending compressive forces during the Indosinian period,the NW-SE and NE-SW strike-slip faults were formed under the SE dextral shear forces during Yanshanian periods,the NEE trending faults are stronger than the NNE trending faults;(2) The strike-slip faults can be divided into 3classes,the class Ⅰ strike-slip faults cut the strata from the Ordovician through the Cretaceous,which developed two sets of the upright shear faults in the NW and the NEE directions.The Class Ⅱ strike-slip faults disconnected the strata from the internal Triassic through the Cretaceous,extending in the NE direction.The Class Ⅲ strike-slip faults cut through the strata from the Ordovician to the internal Permian,extending in the NEE direction;(3)High-yielding wells are distributed along the ClassⅠ strike-slip faults,and the water or oil-water layers are distributed along Class Ⅱ and Class Ⅲstrike-slip faults.
引文
[1]曾联波,郑聪斌.陕甘宁盆地延长统区域裂缝的形成及其油气地质意义.中国区域地质,1999,18(4):391-396.Zeng Lianbo,Zheng Congbin.Origin of the regional fracturing in Yanchang epoch,Shanganning basin,significance for geology of oil and gas.Regional Geology Of China,1999,18(4):391-396.
[2]曾联波,李忠兴,史成恩等.鄂尔多斯盆地上三叠统延长组特低渗透砂岩储层裂缝特征及成因.地质学报,2007,81(2):174-180.Zeng Lianbo,Li Zhongxing,Shi Cheng’en et al.Characteristics and origin of fractures in the extra low-permeability sandstone reservoirs of the Upper Triassic Yanchang Formation in the Ordos Basin.Acta Geologica Sinica,2007,81(2):174-180.
[3]赵文智,胡素云,汪泽成等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用.石油勘探与开发,2003,30(5):1-5.Zhao Wenzhi,Hu Suyun,Wang Zecheng et al.Key role of basement fault control on oil accumulation of Yanchang Formation,Upper Triassic,Ordos Basin.Petroleum Exploration and Development,2003,30(5):1-5.
[4]姚宗惠,张明山,曾令邦等.鄂尔多斯盆地北部断裂构造分析.石油勘探与开发,2003,30(2):20-23.Yao Zhonghui,Zhang Mingshan,Zeng Lingbang et al.Analysis of the faults in the northern Ordos Basin,Northwest China.Petroleum Exploration and Development,2003,30(2):20-23.
[5]叶发旺,刘德长,黄贤芳等.鄂尔多斯盆地北部断裂构造的后遥感应用技术研究.铀矿地质,2006,22(3):182-189.Ye Fawang,Liu Dechang,Huang Xianfang et al.Study on fault tectonics in northen Ordos basin using Post remote sensing application technology.Uranium Geology,2006,22(3):182-189.
[6]张莉.陕甘宁盆地储层裂缝特征及形成的构造应力场分析.地质科技情报,2003,22(2):21-24.Zhang Li.Characteristics of reservoir fracture and the analysis of stress field in Shaanxi-Gansu-Ningxia Basin.Geological Science and Technology Information,2003,22(2):21-24.
[7]李明杰,胡少华,王庆果等.塔中地区走滑断裂体系的发现及其地质意义.石油地球物理勘探,2006,41(1):116-121.Li Mingjie,Hu Shaohua,Wang Qinguo et al.Discovery of strike-slip fault system in Tazhong area and geologic meaning.OGP,2006,41(1):116-121.
[8]Eric A F,Atilla A.Evolution of a strike-slip fault network,Valley of Fire State Park,southern Nevada.Geological Society of America Bulletin,2004,116(1-2):42-59.
[9]Jonathan P T.Strike-slip fault reactivation in the Cardigan Bay Basin.Journal of the Geological Society,1997,154(1):5-8.
[10]李士祥,邓秀芹,庞锦莲等.鄂尔多斯盆地中生界油气成藏与构造运动的关系.沉积学报,2010,28(4):798-806.Li Shixiang,Deng Xiuqin,Pang Jinlian et al.Relationship between petroleum accumulation of Mesozoic and tectonic movement in Ordos Basin.Acta Sedimentologica Sinaca,2010,28(4):798-806.
[11]Bahorich M,Fanner S.3-D seismic discontinuity for faults and stratigraphic features:The coherence cube.The Leading Edge,1995,14(10):1053-1058.
[12]Marfurt K J,Kirlin R,Farmer S L et al.3Dseismic attributes using a semblance-based coherency algorithm.Geophysics,1998,63(4):1150-1165.
[13]Trappe H,Hallmich G,Foell M.Potential power in the application of seismic volume attributes.First Break,2000,18(9):397-340.
[14]张淑娟,王延斌,梁星如等.蚂蚁体追踪技术在潜山油藏裂缝预测中的应用.断块油气田,2011,18(1):51-54.Zhang Shujuan,Wang Yanbin,Liang Xingru et al.Application of ant tracking technology in fracture prediction of carbonate buried-hill reservoir.Fault-Block Oil&Gas Field,2011,18(1):51-54.
[15]AI-Dossary S,Simon Y,Mari K J.Inter azimuth coherence attribute for fracture detection.SEG Technical Program Expanded Abstracts,2004,23:183-186.
[16]宋永东,戴俊生.储层构造裂缝预测研究.油气地质与采收率,2007,14(6):9-13.Song Yongdong,Dai Junsheng.Research on the forecast of reservoir structural fractures.Petroleum Geology and Recovery Efficiency,2007,14(6):9-13.
[17]王时林,秦启荣,苏培东.储层裂缝识别与预测.断块油气田,2009,16(5):31-33.Wang Shilin,Qin Qirong,Su Peidong.Identification and prediction of reservoir fracture.Fault-Block Oil&Gas Field,2009,16(5):31-33.
[18]佘德平,曹辉,郭全仕.断裂系统解释与储层预测中的三维相干技术.石油与天然气地质,2007,25(1):100-105.She Deping,Cao Hui,Guo Quanshi.3-D coherence technique in fault system interpretation and reservoir prediction.Oil&Gas Geology,2007,25(1):100-105.
[19]徐黎明,周立发,张义楷等.鄂尔多斯盆地构造应力场特征及其构造背景.大地构造与成矿学,2006,30(4):455-462.Xu Liming,Zhou Lifa,Zhang Yikai et al.Characteristics and tectonic setting of tectono-stress field of Ordos Basin.Geotectonica et Metallogenia,2006,30(4):455-462.
[20]高山林,韩庆军,杨华等.鄂尔多斯盆地燕山运动及其与油气关系.长春科技大学学报,2000,30(4):355-358.Gao Shanlin,Han Qingjun,Yang Hua et al.Yanshanian movement in Ordos Basin and its relationship with distribution of oil and gas.Journal of Changchun University of Science and Technology,2000,30(4):355-358.
[21]任纪舜.中国东部及邻区大地构造演化的新见解.中国区域地质,1989,1(4):289-300.Ren Jishun.Some new ideas on tectonic evolation of Eastern Chian and adjacent areas.Regional Geology of Chian,1989,1(4):289-300.
[22]张义楷,周立发,党犇等.鄂尔多斯盆地中新生代构造应力场与油气聚集.石油实验地质,2006,28(3):215-219.Zhang Yikai,Zhou Lifa1,Dang Ben et al.Relationship between the Mesozoic and Cenozoic tectonic stress fields and the hydrocarbon accumulation in the Ordos Basin.Petroleum Geology&Experiment,2006,28(3):215-219.
[23]吴自强,朱柞铎.岩石剪切破裂中的“Riedel Shear”构造模式.岩土力学,1991,12(2):67-73.Wu Ziqiang,Zhu Zuoduo.The“Riedel Shear”structure mode concerning the shearing failure of rocks.Rock and Soil Mechaics,1991,12(2):67-73.
[24]刘明洁,刘震,刘静静等.砂岩储集层致密与成藏耦合关系——以鄂尔多斯盆地西峰—安塞地区延长组为例.石油勘探与开发,2014,41(2):168-174.Liu Mingjie,Liu Zhen,Liu Jingjing et al.Coupling relationship between sandstone reservoir densification and hydrocarbon accumulation:A case from the Yanchang Formation of the Xifeng and Ansai areas,Ordos Basin.Petroleum Exploration and Development,2014,41(2):168-174.
[25]吴旭光,蒲仁海,周思宾等.鄂尔多斯盆地红河地区C8段沉积相与砂体展布.石油地球物理勘探,2014,49(6):1213-1221.Wu Xuguang,Pu Renhai,Zhou Sibin et al.Depositonal phases and sandbody distribution of Chang 8Member in Honghe area in the Ordos Basin.OGP,2014,49(6):1213-1221.
[2]曾联波,李忠兴,史成恩等.鄂尔多斯盆地上三叠统延长组特低渗透砂岩储层裂缝特征及成因.地质学报,2007,81(2):174-180.Zeng Lianbo,Li Zhongxing,Shi Cheng’en et al.Characteristics and origin of fractures in the extra low-permeability sandstone reservoirs of the Upper Triassic Yanchang Formation in the Ordos Basin.Acta Geologica Sinica,2007,81(2):174-180.
[3]赵文智,胡素云,汪泽成等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用.石油勘探与开发,2003,30(5):1-5.Zhao Wenzhi,Hu Suyun,Wang Zecheng et al.Key role of basement fault control on oil accumulation of Yanchang Formation,Upper Triassic,Ordos Basin.Petroleum Exploration and Development,2003,30(5):1-5.
[4]姚宗惠,张明山,曾令邦等.鄂尔多斯盆地北部断裂构造分析.石油勘探与开发,2003,30(2):20-23.Yao Zhonghui,Zhang Mingshan,Zeng Lingbang et al.Analysis of the faults in the northern Ordos Basin,Northwest China.Petroleum Exploration and Development,2003,30(2):20-23.
[5]叶发旺,刘德长,黄贤芳等.鄂尔多斯盆地北部断裂构造的后遥感应用技术研究.铀矿地质,2006,22(3):182-189.Ye Fawang,Liu Dechang,Huang Xianfang et al.Study on fault tectonics in northen Ordos basin using Post remote sensing application technology.Uranium Geology,2006,22(3):182-189.
[6]张莉.陕甘宁盆地储层裂缝特征及形成的构造应力场分析.地质科技情报,2003,22(2):21-24.Zhang Li.Characteristics of reservoir fracture and the analysis of stress field in Shaanxi-Gansu-Ningxia Basin.Geological Science and Technology Information,2003,22(2):21-24.
[7]李明杰,胡少华,王庆果等.塔中地区走滑断裂体系的发现及其地质意义.石油地球物理勘探,2006,41(1):116-121.Li Mingjie,Hu Shaohua,Wang Qinguo et al.Discovery of strike-slip fault system in Tazhong area and geologic meaning.OGP,2006,41(1):116-121.
[8]Eric A F,Atilla A.Evolution of a strike-slip fault network,Valley of Fire State Park,southern Nevada.Geological Society of America Bulletin,2004,116(1-2):42-59.
[9]Jonathan P T.Strike-slip fault reactivation in the Cardigan Bay Basin.Journal of the Geological Society,1997,154(1):5-8.
[10]李士祥,邓秀芹,庞锦莲等.鄂尔多斯盆地中生界油气成藏与构造运动的关系.沉积学报,2010,28(4):798-806.Li Shixiang,Deng Xiuqin,Pang Jinlian et al.Relationship between petroleum accumulation of Mesozoic and tectonic movement in Ordos Basin.Acta Sedimentologica Sinaca,2010,28(4):798-806.
[11]Bahorich M,Fanner S.3-D seismic discontinuity for faults and stratigraphic features:The coherence cube.The Leading Edge,1995,14(10):1053-1058.
[12]Marfurt K J,Kirlin R,Farmer S L et al.3Dseismic attributes using a semblance-based coherency algorithm.Geophysics,1998,63(4):1150-1165.
[13]Trappe H,Hallmich G,Foell M.Potential power in the application of seismic volume attributes.First Break,2000,18(9):397-340.
[14]张淑娟,王延斌,梁星如等.蚂蚁体追踪技术在潜山油藏裂缝预测中的应用.断块油气田,2011,18(1):51-54.Zhang Shujuan,Wang Yanbin,Liang Xingru et al.Application of ant tracking technology in fracture prediction of carbonate buried-hill reservoir.Fault-Block Oil&Gas Field,2011,18(1):51-54.
[15]AI-Dossary S,Simon Y,Mari K J.Inter azimuth coherence attribute for fracture detection.SEG Technical Program Expanded Abstracts,2004,23:183-186.
[16]宋永东,戴俊生.储层构造裂缝预测研究.油气地质与采收率,2007,14(6):9-13.Song Yongdong,Dai Junsheng.Research on the forecast of reservoir structural fractures.Petroleum Geology and Recovery Efficiency,2007,14(6):9-13.
[17]王时林,秦启荣,苏培东.储层裂缝识别与预测.断块油气田,2009,16(5):31-33.Wang Shilin,Qin Qirong,Su Peidong.Identification and prediction of reservoir fracture.Fault-Block Oil&Gas Field,2009,16(5):31-33.
[18]佘德平,曹辉,郭全仕.断裂系统解释与储层预测中的三维相干技术.石油与天然气地质,2007,25(1):100-105.She Deping,Cao Hui,Guo Quanshi.3-D coherence technique in fault system interpretation and reservoir prediction.Oil&Gas Geology,2007,25(1):100-105.
[19]徐黎明,周立发,张义楷等.鄂尔多斯盆地构造应力场特征及其构造背景.大地构造与成矿学,2006,30(4):455-462.Xu Liming,Zhou Lifa,Zhang Yikai et al.Characteristics and tectonic setting of tectono-stress field of Ordos Basin.Geotectonica et Metallogenia,2006,30(4):455-462.
[20]高山林,韩庆军,杨华等.鄂尔多斯盆地燕山运动及其与油气关系.长春科技大学学报,2000,30(4):355-358.Gao Shanlin,Han Qingjun,Yang Hua et al.Yanshanian movement in Ordos Basin and its relationship with distribution of oil and gas.Journal of Changchun University of Science and Technology,2000,30(4):355-358.
[21]任纪舜.中国东部及邻区大地构造演化的新见解.中国区域地质,1989,1(4):289-300.Ren Jishun.Some new ideas on tectonic evolation of Eastern Chian and adjacent areas.Regional Geology of Chian,1989,1(4):289-300.
[22]张义楷,周立发,党犇等.鄂尔多斯盆地中新生代构造应力场与油气聚集.石油实验地质,2006,28(3):215-219.Zhang Yikai,Zhou Lifa1,Dang Ben et al.Relationship between the Mesozoic and Cenozoic tectonic stress fields and the hydrocarbon accumulation in the Ordos Basin.Petroleum Geology&Experiment,2006,28(3):215-219.
[23]吴自强,朱柞铎.岩石剪切破裂中的“Riedel Shear”构造模式.岩土力学,1991,12(2):67-73.Wu Ziqiang,Zhu Zuoduo.The“Riedel Shear”structure mode concerning the shearing failure of rocks.Rock and Soil Mechaics,1991,12(2):67-73.
[24]刘明洁,刘震,刘静静等.砂岩储集层致密与成藏耦合关系——以鄂尔多斯盆地西峰—安塞地区延长组为例.石油勘探与开发,2014,41(2):168-174.Liu Mingjie,Liu Zhen,Liu Jingjing et al.Coupling relationship between sandstone reservoir densification and hydrocarbon accumulation:A case from the Yanchang Formation of the Xifeng and Ansai areas,Ordos Basin.Petroleum Exploration and Development,2014,41(2):168-174.
[25]吴旭光,蒲仁海,周思宾等.鄂尔多斯盆地红河地区C8段沉积相与砂体展布.石油地球物理勘探,2014,49(6):1213-1221.Wu Xuguang,Pu Renhai,Zhou Sibin et al.Depositonal phases and sandbody distribution of Chang 8Member in Honghe area in the Ordos Basin.OGP,2014,49(6):1213-1221.