LD油田东营组二段油层低阻成因及沉积背景
|
摘要
LD油田东营组二段EdⅡ油组部分油层电阻率低于下限值,导致油层误判或遗漏。在缺乏岩心资料的情况下,采用常规测井、井壁微电阻率成像测井(FMI)、核磁共振测井(CMR)、X线衍射黏土矿物分析等方法,分析储层的分段特性、岩石结构特征、孔隙度及孔隙结构特征。结果表明:纵向上,研究区储层岩性变化、复杂孔隙结构及黏土矿物造成的高束缚水饱和度,是导致油层低阻的主要原因。根据岩性划分储层类型,低阻油层主要发育于中部的砂砾岩储层。采用自由流体孔隙度—核磁束缚水饱和度交会图法判别储层类型正确率为92%,能够有效识别砂砾岩储层,可以作为寻找低阻油层的重要依据。研究区砂砾岩储层受砂质碎屑流沉积的控制,分布于L1井至LA5井以西,可以利用沉积微相的变化研究低阻油层的平面分布规律。
Some oil layers of EdⅡ oil formation in LD oil field are easily misinterpreted or omitted because of their resistivity values are less than the lower limit value.For lack of core analysis data,we analyzed formation zoning characteristics,rock structure characteristics,porosity and pore structure characteristics through conventional logs,formation microscanner image(FMI)logs,combinable magnetic resonance(CMR)logs and some experimental results of quantitative mineral clay analysis by X-ray diffraction.The results show that low resistivity reservoirs are mainly caused by the change of reservoir lithology and high irreducible water saturation which is formed by complicated porous texture and high cation exchange capacity clay mineral.According to the reservoir types divided by lithology,oil layers which have low resistivity response usually belong to the glutenite reservoirs.Cross-plot of free fluid porosity and irreducible water saturation from CMR,with the accuracy rate of 92%,can effectively identify the glutenite reservoirs as the important basis of low resistivity reservoir identification.From the background of deposition,due to the influence of the provenances and depositional conditions,the glutenite reservoirs mainly distribute in the west of the area from well L1 to well L5 Aindicate that we can use the change of sedimentary microfacies to study the distribution of low resistivity reservoirs.
Some oil layers of EdⅡ oil formation in LD oil field are easily misinterpreted or omitted because of their resistivity values are less than the lower limit value.For lack of core analysis data,we analyzed formation zoning characteristics,rock structure characteristics,porosity and pore structure characteristics through conventional logs,formation microscanner image(FMI)logs,combinable magnetic resonance(CMR)logs and some experimental results of quantitative mineral clay analysis by X-ray diffraction.The results show that low resistivity reservoirs are mainly caused by the change of reservoir lithology and high irreducible water saturation which is formed by complicated porous texture and high cation exchange capacity clay mineral.According to the reservoir types divided by lithology,oil layers which have low resistivity response usually belong to the glutenite reservoirs.Cross-plot of free fluid porosity and irreducible water saturation from CMR,with the accuracy rate of 92%,can effectively identify the glutenite reservoirs as the important basis of low resistivity reservoir identification.From the background of deposition,due to the influence of the provenances and depositional conditions,the glutenite reservoirs mainly distribute in the west of the area from well L1 to well L5 Aindicate that we can use the change of sedimentary microfacies to study the distribution of low resistivity reservoirs.
引文
[1]欧阳健,毛志强,修立军,等.测井低对比度油层成因机理与评价方法[M].北京:石油工业出版社,2009.Ouyang Jian,Mao Zhiqiang,Xiu Lijun,et al.Genetic mechanism and evaluation method of low contrast oil reservoir[M].Beijing:Petroleum Industry Press,2009.
[2]Boyd A,Darling H,Tabanou J,et al.The lowdown on low-resistivity pay[J].Schlumberger Oilfield Review,1995,7(3):4-18.
[3]张冲,毛志强,张超,等.低阻油层的成因机理及测井识别方法研究[J].工程地球物理学报,2008,5(1):48-53.Zhang Chong,Mao Zhiqiang,Zhang Chao,et al.A survey on genetic mechanism and identification methods of low-resistivety layer[J].Chinese Journal of Engineering Geophysics,2008,5(1):48-53.
[4]孙建孟,陈钢花,杨玉征,等.低阻油气层评价方法[J].石油学报,1998,19(3):83-88.Sun Jianmeng,Chen Ganghua,Yang Yuzheng,et al.Low contrast resistivity reservoir evaluation method[J].Acta Petrolei Sinica,1998,19(3):83-88.
[5]Zemanek J.Low resistivity hydrocarbon-bearing sand reservoirs[J].SPE Formation Evaluation,1987,4(6):15-521.
[6]潘和平,黄坚,樊政军,等.低电阻率油气层测井评价[J].勘探地球物理进展,2002,25(6):11-16.Pan Heping,Huang Jian,Fan Zhengjun,et al.Evaluation of low resistivity oil(gas)-bearing reservoirs using well logging information[J].Progress in Exploration Geophysics,2002,25(6):11-16.
[7]丁悦宽,景成杰,杨振庭,等.松辽盆地南部低阻油气层成因机理及控制因素[J].中国石油勘探,2009,14(4):29-33.Ding Yuekuan,Jing Chengjie,Yang Zhenting,et al.Mechanism and controlling factors of the formation of low resistivity reseroirs in southern Songliao basin[J].China Petroleum Exploration,2009,14(4):29-33.
[8]王向公,王福国,韩成,等.大港板桥地区低阻油层成因分析[J].石油天然气学报,2001,23(1):66-68.Wang Xianggong,Wang Fuguo,Han Cheng,et al.Genetic analysis of low resistive reservoir in Banqiao region of Dagang oilfield[J].Journal of Oil and Gas Technology,2001,23(1):66-68.
[9]邵维志,李浩,刘辉.大港白水头地区低阻油气层测井评价[J].测井技术,2001,25(2):127-130.Shao Weizhi,Li Hao,Liu Hui,et al.Log evaluation of low resistivity reservoir in Baishuitou area[J].Well Logging Technology,2001,25(2):127-130.
[10]李恕军,谭玉涵,慕国权,等.安塞长6储层钙质夹层在水淹层测井识别中的应用[J].特种油气藏,2017,24(4):19-23.Li Shujun,Tan Yuhan,Mu Guoquan,et al.The application of calcareous interbed in logging identification of watered out zones for Chang6reservoir,Ansai oilfield[J].Special Oil and Gas Reservoirs,2017,24(4):19-23.
[11]樊佐春.辽河滩海葵东地区低阻油气层测井评价[J].特种油气藏,2017,24(6):21-124.Fan Zuochun.Logging assessments for low-resistivity reservoirs in Kuidong area of Liaohe beach zones[J].Special Oil and Gas Reservoirs,2017,24(6):121-124.
[12]吴应忠,段毅,赵阳,等.陇东地区长81低阻油层与高阻水层识别标准研究[J].特种油气藏,2017,24(1):38-42.Wu Yingzhong,Duan Yi,Zhao Yang,et al.Standards for discernment of low-resistivity oil zones and high-resistivity water zones in L81 formation of the Longdong area[J].Special Oil and Gas Reservoirs,2017,24(1):38-42.
[13]Givens W W.Conductive rock matrix model(CRMM)for the analysis of low-contrast resistivity formations[J].Log Analyst,1987,28(2):138-151.
[14]汪爱云,宋延杰,刘江,等.葡西地区低阻油层的成因[J].大庆石油学院学报,2005,29(1):18-20.Wang Aiyun,Song Yanjie,Liu Jiang,et al.Study of the origin of low resistivity reservoirs in Puxi area[J].Journal of Daqing Petroleum Institute,2005,29(1):18-20.
[15]单祥,季汉成,刘计国,等.尼日尔Agadem区块古近系Sokor1组低阻油层成因[J].东北石油大学学报,2014,38(2):27-34.Shan Xiang,Ji Hancheng,Liu Jiguo,et al.Geological origin in low-resistivity oil layer of Sokor1formation in Agadem block of Niger[J].Journal of Northeast Petroleum University,2014,38(2):27-34.
[16]吴金龙,孙建孟,朱家俊,等.济阳坳陷低阻油层微观成因机理的宏观地质控制因素研究[J].中国石油大学学报:自然科学版,2006,30(3):22-25.Wu Jinlong,Sun Jianmeng,Zhu Jiajun,et al.Study on macro-geologic control genesis of micro-geological causes in low-resistivity oil layer of Jiyang depression[J].Journal of China University of Petroleum:Edition of Natural Science,2006,30(3):22-25.
[17]张文凯,吕正祥,沈忠民,等.辽东凸起东营组砂岩成岩作用及其对储层的影响[J].东北石油大学学报,2017,41(1):97-105.Zhang Wenkai,Lyu Zhengxiang,Shen Zhongmin,et al.Diagenesis of Dongying formation in Liaodong upliftand and its effects on reservoir quality of sandstone[J].Journal of Northeast Petroleum University,2017,41(1):97-105.
[18]胡治华,申春生,赵春明.渤海海域旅大27-2油田东营组低渗储层特征及影响因素分析[J].天津科技,2010(5):69-72.Hu Zhihua,Shen Chunsheng,Zhao Chunming.Characteristics and influencing factors analysis in low permeability reservoir of EdⅡoil formation in LD27-2oilfield[J].Tianjin Science&Technology,2010(5):69-72.
[19]李建平,杨波,周心怀,等.渤中凹陷东营组层序地层及其沉积相分析[J].东北石油大学学报,2012,36(4):1-9.Li Jianping,Yang Bo,Zhou Xinhuai,et al.Sequence stratigraphy and sedimentary facies analysis of Dongying formation in Bozhong sag[J].Journal of Northeast Petroleum University,2012,36(4):1-9.
[20]吴奎,吴俊刚,张中巧,等.辽中凹陷北部湖底扇沉积模式及地震响应特征[J].东北石油大学学报,2012,36(5):33-37.Wu Kui,Wu Jungang,Zhang Zhongqiao,et al.Sedimentary model and seismic response characteristics of the sublacustrine fan in Nothern Liaozhong Depression[J].Journal of Northeast Petroleum University,2012,36(5):33-37.
[21]戴朝成.辽东湾盆地旅大地区古近系层序一岩相古地理特征[D].成都:成都理工大学,2008.Dai Zhaocheng.The feature of sequence-based lithofacies and paleogeography during Paleogene of Luda area,Liaodongwan basin[D].Chengdu:Chengdu University of Technology,2008.
[22]王力群,李超,李其正,等.辽东湾盆地旅大10-1油田储层沉积学研究[J].岩性油气藏,2013,25(5):24-30.Wang Liqun,Li Chao,Li Qizheng,et al.Reservoir sedimentology of Lvda 10-1oilfield in Liaodong Bay basin[J].Lithologic Reservoirs,2013,25(5):24-30.
[23]陈飞,胡光义,孙立春,等.鄂尔多斯盆地富县地区上三叠统延长组砂质碎屑流沉积特征及其油气勘探意义[J].沉积学报,2012,30(6):1042-1052.Chen Fei,Hu Guangyi,Sun Lichun,et al.Sedimentary characteristics and the significance of petroleum exploration of sandy debris flows of Yanchang formationof the upper triassin,Fuxian area,Ordos basin[J].Acta Sedimentologica Sinica,2012,30(6):1042-1052.
[2]Boyd A,Darling H,Tabanou J,et al.The lowdown on low-resistivity pay[J].Schlumberger Oilfield Review,1995,7(3):4-18.
[3]张冲,毛志强,张超,等.低阻油层的成因机理及测井识别方法研究[J].工程地球物理学报,2008,5(1):48-53.Zhang Chong,Mao Zhiqiang,Zhang Chao,et al.A survey on genetic mechanism and identification methods of low-resistivety layer[J].Chinese Journal of Engineering Geophysics,2008,5(1):48-53.
[4]孙建孟,陈钢花,杨玉征,等.低阻油气层评价方法[J].石油学报,1998,19(3):83-88.Sun Jianmeng,Chen Ganghua,Yang Yuzheng,et al.Low contrast resistivity reservoir evaluation method[J].Acta Petrolei Sinica,1998,19(3):83-88.
[5]Zemanek J.Low resistivity hydrocarbon-bearing sand reservoirs[J].SPE Formation Evaluation,1987,4(6):15-521.
[6]潘和平,黄坚,樊政军,等.低电阻率油气层测井评价[J].勘探地球物理进展,2002,25(6):11-16.Pan Heping,Huang Jian,Fan Zhengjun,et al.Evaluation of low resistivity oil(gas)-bearing reservoirs using well logging information[J].Progress in Exploration Geophysics,2002,25(6):11-16.
[7]丁悦宽,景成杰,杨振庭,等.松辽盆地南部低阻油气层成因机理及控制因素[J].中国石油勘探,2009,14(4):29-33.Ding Yuekuan,Jing Chengjie,Yang Zhenting,et al.Mechanism and controlling factors of the formation of low resistivity reseroirs in southern Songliao basin[J].China Petroleum Exploration,2009,14(4):29-33.
[8]王向公,王福国,韩成,等.大港板桥地区低阻油层成因分析[J].石油天然气学报,2001,23(1):66-68.Wang Xianggong,Wang Fuguo,Han Cheng,et al.Genetic analysis of low resistive reservoir in Banqiao region of Dagang oilfield[J].Journal of Oil and Gas Technology,2001,23(1):66-68.
[9]邵维志,李浩,刘辉.大港白水头地区低阻油气层测井评价[J].测井技术,2001,25(2):127-130.Shao Weizhi,Li Hao,Liu Hui,et al.Log evaluation of low resistivity reservoir in Baishuitou area[J].Well Logging Technology,2001,25(2):127-130.
[10]李恕军,谭玉涵,慕国权,等.安塞长6储层钙质夹层在水淹层测井识别中的应用[J].特种油气藏,2017,24(4):19-23.Li Shujun,Tan Yuhan,Mu Guoquan,et al.The application of calcareous interbed in logging identification of watered out zones for Chang6reservoir,Ansai oilfield[J].Special Oil and Gas Reservoirs,2017,24(4):19-23.
[11]樊佐春.辽河滩海葵东地区低阻油气层测井评价[J].特种油气藏,2017,24(6):21-124.Fan Zuochun.Logging assessments for low-resistivity reservoirs in Kuidong area of Liaohe beach zones[J].Special Oil and Gas Reservoirs,2017,24(6):121-124.
[12]吴应忠,段毅,赵阳,等.陇东地区长81低阻油层与高阻水层识别标准研究[J].特种油气藏,2017,24(1):38-42.Wu Yingzhong,Duan Yi,Zhao Yang,et al.Standards for discernment of low-resistivity oil zones and high-resistivity water zones in L81 formation of the Longdong area[J].Special Oil and Gas Reservoirs,2017,24(1):38-42.
[13]Givens W W.Conductive rock matrix model(CRMM)for the analysis of low-contrast resistivity formations[J].Log Analyst,1987,28(2):138-151.
[14]汪爱云,宋延杰,刘江,等.葡西地区低阻油层的成因[J].大庆石油学院学报,2005,29(1):18-20.Wang Aiyun,Song Yanjie,Liu Jiang,et al.Study of the origin of low resistivity reservoirs in Puxi area[J].Journal of Daqing Petroleum Institute,2005,29(1):18-20.
[15]单祥,季汉成,刘计国,等.尼日尔Agadem区块古近系Sokor1组低阻油层成因[J].东北石油大学学报,2014,38(2):27-34.Shan Xiang,Ji Hancheng,Liu Jiguo,et al.Geological origin in low-resistivity oil layer of Sokor1formation in Agadem block of Niger[J].Journal of Northeast Petroleum University,2014,38(2):27-34.
[16]吴金龙,孙建孟,朱家俊,等.济阳坳陷低阻油层微观成因机理的宏观地质控制因素研究[J].中国石油大学学报:自然科学版,2006,30(3):22-25.Wu Jinlong,Sun Jianmeng,Zhu Jiajun,et al.Study on macro-geologic control genesis of micro-geological causes in low-resistivity oil layer of Jiyang depression[J].Journal of China University of Petroleum:Edition of Natural Science,2006,30(3):22-25.
[17]张文凯,吕正祥,沈忠民,等.辽东凸起东营组砂岩成岩作用及其对储层的影响[J].东北石油大学学报,2017,41(1):97-105.Zhang Wenkai,Lyu Zhengxiang,Shen Zhongmin,et al.Diagenesis of Dongying formation in Liaodong upliftand and its effects on reservoir quality of sandstone[J].Journal of Northeast Petroleum University,2017,41(1):97-105.
[18]胡治华,申春生,赵春明.渤海海域旅大27-2油田东营组低渗储层特征及影响因素分析[J].天津科技,2010(5):69-72.Hu Zhihua,Shen Chunsheng,Zhao Chunming.Characteristics and influencing factors analysis in low permeability reservoir of EdⅡoil formation in LD27-2oilfield[J].Tianjin Science&Technology,2010(5):69-72.
[19]李建平,杨波,周心怀,等.渤中凹陷东营组层序地层及其沉积相分析[J].东北石油大学学报,2012,36(4):1-9.Li Jianping,Yang Bo,Zhou Xinhuai,et al.Sequence stratigraphy and sedimentary facies analysis of Dongying formation in Bozhong sag[J].Journal of Northeast Petroleum University,2012,36(4):1-9.
[20]吴奎,吴俊刚,张中巧,等.辽中凹陷北部湖底扇沉积模式及地震响应特征[J].东北石油大学学报,2012,36(5):33-37.Wu Kui,Wu Jungang,Zhang Zhongqiao,et al.Sedimentary model and seismic response characteristics of the sublacustrine fan in Nothern Liaozhong Depression[J].Journal of Northeast Petroleum University,2012,36(5):33-37.
[21]戴朝成.辽东湾盆地旅大地区古近系层序一岩相古地理特征[D].成都:成都理工大学,2008.Dai Zhaocheng.The feature of sequence-based lithofacies and paleogeography during Paleogene of Luda area,Liaodongwan basin[D].Chengdu:Chengdu University of Technology,2008.
[22]王力群,李超,李其正,等.辽东湾盆地旅大10-1油田储层沉积学研究[J].岩性油气藏,2013,25(5):24-30.Wang Liqun,Li Chao,Li Qizheng,et al.Reservoir sedimentology of Lvda 10-1oilfield in Liaodong Bay basin[J].Lithologic Reservoirs,2013,25(5):24-30.
[23]陈飞,胡光义,孙立春,等.鄂尔多斯盆地富县地区上三叠统延长组砂质碎屑流沉积特征及其油气勘探意义[J].沉积学报,2012,30(6):1042-1052.Chen Fei,Hu Guangyi,Sun Lichun,et al.Sedimentary characteristics and the significance of petroleum exploration of sandy debris flows of Yanchang formationof the upper triassin,Fuxian area,Ordos basin[J].Acta Sedimentologica Sinica,2012,30(6):1042-1052.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |