鄂尔多斯盆地镇原-泾川地区中生界断裂发育特征
|
摘要
镇原-泾川地区位于鄂尔多斯盆地西南缘,具有不同于鄂尔多斯地块的古应力场。通过三维地震资料解释发现:镇原-泾川地区发育NEE和NWW向2套断裂,总体表现为"上下分层、带状分布"的特点,断裂产状陡、近直立、铅直断距小。NEE向断裂多为走滑正断层样式,活动方式为张性走滑;NWW向断裂兼具走滑正断层与走滑逆断层样式,其中逆断层为压扭性走滑。NWW向断裂在延长组地层沉积前已形成,并一直以先存断裂的形式存在,喜山期至现今受NEE向挤压应力影响,NWW向断裂发生左旋走滑,先存断裂诱导形成NEE向的后期断裂。
The Zhenyuan-Jingchuan area is located in the southwest margin of Ordos Basin and has an ancient stress field different from the Ordos Block. Interpretation of 3 D seismic data has clarified the development of Zhenyuan-Jingchuan area with both NEE and NWW directions of two strike fractures. The fractures are characterized by "upper and lower stratification, zonal distribution" with small vertical fault throws. The NEE faults are mostly strike-slip normal fault pattern with tensional and transtensional behavior,while the NWW faults are both strike-slip normal fault and strike-slip reverse fault pattern, in which the reverse faults are pressure twist. NWW faults are formed before Yanchang Formation deposition and exist in the form of deposit fractures. From the Himalayan period to present, the compressive stress in the NEE direction has caused the NWW faults to have a left-lateral slip so that they continue to play the role of preexisting fractures and induce the formation of NEE faults.
The Zhenyuan-Jingchuan area is located in the southwest margin of Ordos Basin and has an ancient stress field different from the Ordos Block. Interpretation of 3 D seismic data has clarified the development of Zhenyuan-Jingchuan area with both NEE and NWW directions of two strike fractures. The fractures are characterized by "upper and lower stratification, zonal distribution" with small vertical fault throws. The NEE faults are mostly strike-slip normal fault pattern with tensional and transtensional behavior,while the NWW faults are both strike-slip normal fault and strike-slip reverse fault pattern, in which the reverse faults are pressure twist. NWW faults are formed before Yanchang Formation deposition and exist in the form of deposit fractures. From the Himalayan period to present, the compressive stress in the NEE direction has caused the NWW faults to have a left-lateral slip so that they continue to play the role of preexisting fractures and induce the formation of NEE faults.
引文
[1]何自新.鄂尔多斯盆地演化与油气[M].北京:石油工业出版社,2003:68-75.
[2]尹伟,郑和荣,胡宗全,等.鄂南镇泾地区延长组油气富集主控因素及勘探方向[J].石油与天然气地质,2012,33(2):159-165.
[3]郭艳琴,李文厚,陈全红,等.鄂尔多斯盆地安塞-富县地区延长组-延安组原油地球化学特征及油源对比[J].石油与天然气地质,2006,27(2):218-224.
[4]杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[5]周文,林家善,张银德,等.镇泾地区曙光油田延长组构造裂缝分布评价[J].石油天然气学报,2008,30(5):1-4.
[6]张林炎,范昆,刘进东,等.鄂尔多斯盆地镇原-泾川地区三叠系延长组构造裂缝分布定量预测[J].地质力学学报,2006,12(4):476-484.
[7]赵勇,戴俊生.应用落差分析研究生长断层[J].石油勘探与开发,2003,30(3):13-15.
[8]戈红星,ANDERSON J K.正断层断距纵剖面图及其运动学:概念模型与地质实例(英文)[J].高校地质学报,2007,13(1):75-88.
[9]朱志澄,宋鸿林.构造地质学[M].武汉:中国地质大学出版社,1990:128-164.
[10]漆家福,夏义平,杨桥.油区构造解析[M].北京:石油工业出版社,2006:25-104.
[11]万天丰.中国大地构造学[M].北京:地质出版社,2011:80-106.
[12]张泓.鄂尔多斯盆地中新生代构造应力场[J].华北地质矿产杂志,1996,11(1):87-92.
[13]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[J].大地构造与成矿学,2006,30(4):455-462.
[14]白青林,杨少春,马芸,等.鄂尔多斯盆地西南缘长8段油源多元精细对比[J].断块油气田,2018,25(6):689-694.
[15]宋世骏,刘森,梁月霞.鄂尔多斯盆地西南部长8致密油层油气成藏期次和时期[J].断块油气田,2018,25(2):141-145.
[16]王翠丽,周文,李红波,等.镇泾地区延长组多期次裂缝发育特征及分布[J].成都理工大学学报(自然科学版),2014,41(5):596-603.
[17]陈英,赵景,白彬艳.特殊测井方法识别地应力方向在镇泾油田的应用[J].石油天然气学报,2013,35(1):86-93.
[18]张林炎,刘小芹,廖云山,等.鄂尔多斯盆地镇原-泾川地区延长组有利勘探区带预测[J].重庆科技学院学报(自然科学版),2010,12(5):25-29.
[19]张岳桥,施炜,廖昌珍,等.鄂尔多斯盆地周边断裂运动学分析与晚中生代构造应力体制转换[J].地质学报,2006,80(5):640-647.
[20]瞿伟,张勤,王庆良,等.渭河盆地现今地壳水平形变特征及区域构造活动性[J].武汉大学学报(信息科学版),2011,36(7):830-834.
[21]瞿伟,王运生,徐超,等.渭河盆地深大断裂处构造应力特征及其活动特征[J].武汉大学学报(信息科学版),2017,42(6):825-830.
[22]胡亚轩,郝明,宋尚武,等.渭河盆地现今三维地壳运动及断裂活动性研究[J].大地测量与地球动力学,2018,38(12):1220-1226.
[23]王猛.黄土塬地区中生界地震资料应用的问题与思考[J].中国石油大学胜利学院学报,2018,32(4):9-29.
[2]尹伟,郑和荣,胡宗全,等.鄂南镇泾地区延长组油气富集主控因素及勘探方向[J].石油与天然气地质,2012,33(2):159-165.
[3]郭艳琴,李文厚,陈全红,等.鄂尔多斯盆地安塞-富县地区延长组-延安组原油地球化学特征及油源对比[J].石油与天然气地质,2006,27(2):218-224.
[4]杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[5]周文,林家善,张银德,等.镇泾地区曙光油田延长组构造裂缝分布评价[J].石油天然气学报,2008,30(5):1-4.
[6]张林炎,范昆,刘进东,等.鄂尔多斯盆地镇原-泾川地区三叠系延长组构造裂缝分布定量预测[J].地质力学学报,2006,12(4):476-484.
[7]赵勇,戴俊生.应用落差分析研究生长断层[J].石油勘探与开发,2003,30(3):13-15.
[8]戈红星,ANDERSON J K.正断层断距纵剖面图及其运动学:概念模型与地质实例(英文)[J].高校地质学报,2007,13(1):75-88.
[9]朱志澄,宋鸿林.构造地质学[M].武汉:中国地质大学出版社,1990:128-164.
[10]漆家福,夏义平,杨桥.油区构造解析[M].北京:石油工业出版社,2006:25-104.
[11]万天丰.中国大地构造学[M].北京:地质出版社,2011:80-106.
[12]张泓.鄂尔多斯盆地中新生代构造应力场[J].华北地质矿产杂志,1996,11(1):87-92.
[13]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[J].大地构造与成矿学,2006,30(4):455-462.
[14]白青林,杨少春,马芸,等.鄂尔多斯盆地西南缘长8段油源多元精细对比[J].断块油气田,2018,25(6):689-694.
[15]宋世骏,刘森,梁月霞.鄂尔多斯盆地西南部长8致密油层油气成藏期次和时期[J].断块油气田,2018,25(2):141-145.
[16]王翠丽,周文,李红波,等.镇泾地区延长组多期次裂缝发育特征及分布[J].成都理工大学学报(自然科学版),2014,41(5):596-603.
[17]陈英,赵景,白彬艳.特殊测井方法识别地应力方向在镇泾油田的应用[J].石油天然气学报,2013,35(1):86-93.
[18]张林炎,刘小芹,廖云山,等.鄂尔多斯盆地镇原-泾川地区延长组有利勘探区带预测[J].重庆科技学院学报(自然科学版),2010,12(5):25-29.
[19]张岳桥,施炜,廖昌珍,等.鄂尔多斯盆地周边断裂运动学分析与晚中生代构造应力体制转换[J].地质学报,2006,80(5):640-647.
[20]瞿伟,张勤,王庆良,等.渭河盆地现今地壳水平形变特征及区域构造活动性[J].武汉大学学报(信息科学版),2011,36(7):830-834.
[21]瞿伟,王运生,徐超,等.渭河盆地深大断裂处构造应力特征及其活动特征[J].武汉大学学报(信息科学版),2017,42(6):825-830.
[22]胡亚轩,郝明,宋尚武,等.渭河盆地现今三维地壳运动及断裂活动性研究[J].大地测量与地球动力学,2018,38(12):1220-1226.
[23]王猛.黄土塬地区中生界地震资料应用的问题与思考[J].中国石油大学胜利学院学报,2018,32(4):9-29.