玛湖凹陷斜坡区KE89—MAh9古鼻凸的发现及油气勘探意义
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摘要
为探索玛湖凹陷斜坡区主扇之间低勘探程度区的油气勘探潜力及成藏模式,利用钻井、测井和地震资料在黄羊泉扇和克拉玛依扇之间新发现了KE89—MAh9二叠系古鼻凸;参考露头剖面,利用断层生长指数、地震时间切片、AE法声发射最大古应力值测定、FMI测井最大古应力方向测定等多种地球物理手段,综合分析古鼻凸的成因及演化过程;明确古鼻凸对三叠系百口泉组一段(T_1b_1)沉积及成藏的控制作用。结果表明:古鼻凸顶面为T/P区域不整合面,由F1、F2两条同沉积逆冲断层夹持控制,由晚海西期近东西向逆冲推覆作用形成,最终受早印支期近南北向右行走滑作用改造而定型;古鼻凸南翼下倾部位T_1b_1段新发现"超覆线—迎烃面—通油源断层"配置条件良好的潜在油气富集区63.4km~2/12块,揭示了玛湖凹陷斜坡区存在地层超覆圈闭勘探新领域。
In order to explore the oil & gas potential among main-fans in the slope area of Mahu Sag,KE89-MAh9 paleo-salient of Permian is discovered between Huangyangquan Fan and Karamay Fan with the joint use of drilling,logging and seismic data.With refering to outcrops,the genesis and evolution process of the paleo-salient is comprehensively analyzed by different geophysical means such as fault growth index,seismic time slices,maximum ancient stress estimations with acoustic emission(AE),and the maximum ancient stress direction determined by formation microscanner image(FMI)logging.The control of paleo-salient on the deposition and accumulation of T1 b1 formation is clarified.The following understanding are obtained based on our study:A.The paleo-salient top is an unconformity surface in T/P,controlled by the clamping of F1 and F2 co-sedimentary overthrust faults,formed by the near east-west overthrust of late Hercynian,and reconstructed and finalized by the right lateral sliding and twisting of early Indosinian;B.63.4 km2/12 blocks with good configuration conditions is found in the T1 b1 formation in the lower part of the south flank of the paleo-salient,revealing new formation overburden traps in the slope area of Mahu Sag.
In order to explore the oil & gas potential among main-fans in the slope area of Mahu Sag,KE89-MAh9 paleo-salient of Permian is discovered between Huangyangquan Fan and Karamay Fan with the joint use of drilling,logging and seismic data.With refering to outcrops,the genesis and evolution process of the paleo-salient is comprehensively analyzed by different geophysical means such as fault growth index,seismic time slices,maximum ancient stress estimations with acoustic emission(AE),and the maximum ancient stress direction determined by formation microscanner image(FMI)logging.The control of paleo-salient on the deposition and accumulation of T1 b1 formation is clarified.The following understanding are obtained based on our study:A.The paleo-salient top is an unconformity surface in T/P,controlled by the clamping of F1 and F2 co-sedimentary overthrust faults,formed by the near east-west overthrust of late Hercynian,and reconstructed and finalized by the right lateral sliding and twisting of early Indosinian;B.63.4 km2/12 blocks with good configuration conditions is found in the T1 b1 formation in the lower part of the south flank of the paleo-salient,revealing new formation overburden traps in the slope area of Mahu Sag.
引文
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[15] 谭玺,薛雄,葛智玲,等.浅析FMI在塔河油田中对诱导缝的识别[J].内蒙古石油化工,2012,28(12):41-45.TAN Xi,XUE Xiong,GE Zhiling,et al.Analysis of FMI identification of induced fractures in Tahe Oil-field[J].Inner Mongolia Petrochemical Industry,2012,28(12):41-45.
[16] 赵良孝.椭圆形井眼垮塌的原因和应用[J].测井技术,1985,9(3):29-32.ZHAO Liangxiao.The causes and applications of the collapse of the elliptical borehole[J].Logging Technology,1985,9(3):29-32.
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[20] 林娟,娄兵,张淑萍,等.准噶尔盆地玛湖1井区高密度三维OVT域裂缝预测的应用[J].石油地球物理勘探,2017,52(增刊2):146-152.LIN Juan,LOU Bing,ZHANG Shuping,et al.Fracture prediction with the high-density 3D OVT domain in the well Mahu1 area,Junggar Basin[J].Oil Geophysical Prospecting,2017,52(S2):146-152.
[21] 董少群,曾联波,徐超辉,等.储层裂缝随机建模方法研究进展[J].石油地球物理勘探,2018,53(3):625-629.DONG Shaoqun,ZENG Lianbo,XU Chaohui,et al.Some progress in reservoir fracture stochastic modeling research[J].Oil Geophysical Prospecting,2018,53(3):625-629.
[22] 李春鹏,印兴耀,刘志国,等.裂缝型储层预测的各向异性梯度反演方法研究[J].石油物探,2017,56(6):835-840.LI Chunpeng,YIN Xingyao,LIU Zhiguo,et al.An ani-sotropic gradient inversion for fractured reservoir prediction[J].Geophysical Prospecting for Petroleum,2017,56(6):835-840.
[2] 孟祥超,陈能贵,王海明,等.砂砾岩沉积特征分析及有利储集相带确定——以玛北斜坡区百口泉组为例[J].沉积学报,2015,33(6):1235-1247.MENG Xiangchao,CHEN Nenggui,WANG Hai-ming,et al.Sedimentary characteristics of glutenite and its favourable accumulation facies: A case study from T1b,Mabei Slope,Junggar Basin[J].Acta Sedimentologica Sinica,2015,33(6):1235-1247.
[3] 孟祥超,陈能贵,苏静,等.砂砾岩体不同岩相油气充注期储集性能差异及成藏意义——以玛湖凹陷西斜坡区百口泉组油藏为例[J].沉积学报,2016,34(3):606-615.MENG Xiangchao,CHEN Nenggui,SU Jing,et al.Reservoir property diversity of different lithofacies in sandy conglomerate during oil-gas injection period and reservoir-formation significance:A case from Baikouquan Formation in west slope of Mahu Depression,Junggar Basin[J].Acta Sedimentologica Sinica,2016,34(3):606-615.
[4] 邹志文,李辉,徐洋,等.准噶尔盆地玛湖凹陷下三叠统百口泉组扇三角洲沉积特征[J].地质科技情报,2015,34(2):20-26.ZOU Zhiwen,LI Hui,XU Yang,et al.Sedimentary characteristics of the Baikouquan Formation,Lower Triassic in the Mahu Depression,Junggar Basin[J].Geological Science and Technology Information,2015,34(2):20-26.
[5] 吴孔友,查明.多期叠合盆地成藏动力学系统及其控藏作用——以准噶尔盆地为例[M].山东东营:中国石油大学出版社,2009,31-36.
[6] 陶国亮,胡文瑄,张义杰,等.准噶尔盆地西北缘北西向横断裂与油气成藏[J].石油学报,2006,27(4):24-30.TAO Guoliang,HU Wenxuan,ZHANG Yijie,et al.NW-trending transverse faults and hydrocarbon accumulation in the northwestern margin of Junggar Basin[J].Acta Petrolei Sinica,2006,27(4):24-30.
[7] 邵雨,汪仁富,张越迁,等.准噶尔盆地西北缘走滑构造与油气勘探[J].石油学报,2011,32(6):976-984.SHAO Yu,WANG Renfu,ZHANG Yueqian,et al.Strike-slip structure and oil-gas exploration in the NW margin of Junggar Basin,China[J].Acta Petrolei Sinica,2011,32(6):976-984.
[8] 何登发,尹成,杜社宽,等.前陆冲断带构造分段特征——以准噶尔盆地西北缘断裂构造带为例[J].地学前缘,2004,11(3):91-101.HE Dengfa,YIN Cheng,DU Shekuan,et al.Characteristics of structural segmentation of foreland thrust belts: A case study of the fault belts in the northwestern margin of Junggar Basin[J].Earth Science Frontiers,2004,11(3):91-101.
[9] 何登发,陈新发,张义杰,等.准噶尔盆地油气富集规律[J].石油学报,2004,25(3):1-10.HE Dengfa,CHEN Xinfa,ZHANG Yijie,et al.Enrichment characteristics of oil and gas in Junggar Basin[J].Acta Petrolei Sinica,2004,25(3):1-10.
[10] 雷振宇,卞德智.准噶尔盆地西北缘扇体形成特征及油气分布规律[J].石油学报,2005,26(1):8-12.LEI Zhenyu,BIAN Dezhi.Characteristics of fan forming and oil-gas distribution in west-north margin of Junggar Basin[J].Acta Petrolei Sinica,2005,26(1):8-12.
[11] 雷振宇,鲁兵,蔚远江,等.准噶尔盆地西北缘构造演化与扇体形成和分布[J].石油与天然气地质,2005,26(1):86-91.LEI Zhenyu,LU Bing,WEI Yuanjiang,et al.Tectonic evolution and development and distribution of fans on northwestern edge of Junggar Basin[J].Oil & Gas Geology,2005,26(1):86-91.
[12] 鲍洪志,孙连环,于玲玲,等.利用岩石声发射Kaiser效应求取地应力[J].断块油气田,2009,16(6):94-96.BAO Hongzhi,SUN Lianhuan,YU Lingling,et al.Obtainment of ground stress by Kaiser effect of rock acoustic emission[J].Fault-Block Oil and Gas Field,2009,16(6):94-96.
[13] 黄忠桥,康义逵.应用声发射资料计算地应力的方法[J].特种油气藏,2003,10(4):4-5.HUANG Zhongqiao,KANG Yikui.Calculate earth stress by acoustic data[J].Special Oil and Gas Reservoirs,2003,10(4):4-5.
[14] 孙彩云.利用椭圆井眼分析刘庄地区构造应力方向[J].内蒙古石油化工,2005,(1):104-107.SUN Caiyun.Analysis of structural stress direction in Liuzhuang area by using elliptical well analysis[J].Inner Mongolia Petrochemical Industry,2005,(1):104-107.
[15] 谭玺,薛雄,葛智玲,等.浅析FMI在塔河油田中对诱导缝的识别[J].内蒙古石油化工,2012,28(12):41-45.TAN Xi,XUE Xiong,GE Zhiling,et al.Analysis of FMI identification of induced fractures in Tahe Oil-field[J].Inner Mongolia Petrochemical Industry,2012,28(12):41-45.
[16] 赵良孝.椭圆形井眼垮塌的原因和应用[J].测井技术,1985,9(3):29-32.ZHAO Liangxiao.The causes and applications of the collapse of the elliptical borehole[J].Logging Technology,1985,9(3):29-32.
[17] 况军,王绪龙,杨海波,等.准噶尔盆地第三次油气资源评价[R].新疆油田公司内部报告,2000,72-86.
[18] 曹小璐,钟厚财,刘啸虎,等.准噶尔盆地玛湖地区三叠系百口泉组优质储层预测[J].石油地球物理勘探,2017,52(1):126-128.CAO Xiaolu,ZHONG Houcai,LIU Xiaohu,et al.High-quality reservoir prediction for Triassica in Mahu Depression,Junggar Basin[J].Oil Geophysical Prospecting,2017,52(1):126-128.
[19] 潘杰,刘忠群,蒲仁海,等.利用三维地震透镜体反射识别C8段河道砂体——鄂尔多斯盆地西南部黄土塬区储层预测实例[J].石油地球物理勘探,2017,52(3):521-525.PAN jie,LIU Zhongqun,PU Renhai,et al.Chang 8 channel sand identification with 3D seismic lens reflections in Daijiaping survey,Southwestern Ordos Basin[J].Oil Geophysical Prospecting,2017,52(3):521-525.
[20] 林娟,娄兵,张淑萍,等.准噶尔盆地玛湖1井区高密度三维OVT域裂缝预测的应用[J].石油地球物理勘探,2017,52(增刊2):146-152.LIN Juan,LOU Bing,ZHANG Shuping,et al.Fracture prediction with the high-density 3D OVT domain in the well Mahu1 area,Junggar Basin[J].Oil Geophysical Prospecting,2017,52(S2):146-152.
[21] 董少群,曾联波,徐超辉,等.储层裂缝随机建模方法研究进展[J].石油地球物理勘探,2018,53(3):625-629.DONG Shaoqun,ZENG Lianbo,XU Chaohui,et al.Some progress in reservoir fracture stochastic modeling research[J].Oil Geophysical Prospecting,2018,53(3):625-629.
[22] 李春鹏,印兴耀,刘志国,等.裂缝型储层预测的各向异性梯度反演方法研究[J].石油物探,2017,56(6):835-840.LI Chunpeng,YIN Xingyao,LIU Zhiguo,et al.An ani-sotropic gradient inversion for fractured reservoir prediction[J].Geophysical Prospecting for Petroleum,2017,56(6):835-840.