沈阳油田沈611块精细油藏描述
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摘要
本文所要研究沈611井区位于辽宁省新民县法哈牛乡－前进乡－大民屯乡境内，构造位置处于大民屯凹陷荣胜堡洼陷北，北以沈116北断层为界，西与沈69块相邻，东与静安堡油田相邻。岩石类型以中细粒长石砂岩为主，风化程度深，储层物性差，是典型的深层低渗透油藏。自1996年投入开发以来，由于该油田含油井段长，层间物性差异明显，开发过程中已经暴露出明显的层间矛盾，需要对油藏加深认识，建立精细的三维地质模型，开展剩余油分布规律研究，提出挖潜措施。
本次研究以精细油藏地质研究为基础，从地质、测井、油藏工程等多个方面入手，开展以重建地质模型为核心的精细油藏描述研究。在地质方面，以沉积学理论为指导，采用“旋回为基础，标志层控制，三级对比，逐级细分”的旋对比方法，共计完成七个油组92个小层的精细模型,并根据岩相、古生物以及电性标志，确定了沉积微相类型和发育特征，进行剖面沉积微相研究，分析了沉积微相和砂体分布规律，结合储层测井参数解释结果，分别建立油藏规模、小层规模、单砂层规模的储层三维地质模型。
在油藏工程研究方面，依据水驱动用程度、水驱控制程度、经济极限井网密度等指标，对区块井网适应性进行评价，并通过综合分析含水与采出程度关系、水驱指数与含水关系和注水利用率等指标来综合评价区块的开发水平，建立了全油田模型，完成了储量拟合、历史拟合、剩余油分布规律研究,在此基础上提出了具体综合调整部署建议。
The article studies the work area of Shen611, which is located in the borders of Fahaniu,Qianjin and Damintun of Xinmin city in Liaoning province. Its regional structural location isin the north of Rong Sheng Pu depression of Damintun sag, whose north border is Shen116fault, west adjacent area is Block Shen69, and east adjacent area is Jing An Pu oilfield.Reservoir rock type is mainly medium-fine arkose, with deeply weathered and poor reservoirphysical property. The oil reservoir belongs to typical low permeable deep seated reservoir.From its development in1996, the reservoir’s development process has revealed distinctinterlayer interference because of obvious interlayer property difference and long interval,which gives reasons to deepening cognition of the reservoir, establishing fine3-D geologicalmodel, carrying out research on distribution of remaining oil and putting forward measuresfor tapping potential.
On the basis of meticulous and quantitative reservoir geological research, starting fromgeology, logging, oil reservoir engineering and so on, the study proceed fine reservoirdescription research is unfolded with the centre of reconstructed geologic model. Ingeological aspect, guiding by sedmentology, using cycle contrast method namely “cycle as thebasis, controled by key bed, contrasting through three grades, subdivided by degrees”,refinement single layer model containing seven groups of oil-bearing horizon and ninety-twosingle layers are established. According to lithofacies, paleontological and electrical marks,the type of sedimentary micro-facies and its developmental character is confirmed, theresearch on profile sedimentary micro-facies is carried out, and sedimentary micro-facies andsand body distribution law is further analyzed. And united the explanation result of logparameter, the reservoir3-D geological model is established including oil pool scale, sublayerscale, and single sand body scale.
In the aspect of oil reservoir engineering, according to producing degree ofwaterflooding, control degree of waterflooding, economic critical pattern size and so on, theadaptability of block well network is evaluated. Through analyzed the relationship betweenwater cut and degree of reserve recovery, the relationship between water drive index andwater cut, and effectiveness of water injection etc., the block’s development level iscomprehensively evaluated, the oilfield integrated model is established, the reserve curvefitting and production history fitting is accomplished, and then the distribution law ofremaining oil is studied. On the base of these, the concrete comprehensive adjustment anddisposition suggestions are advanced at last.
本次研究以精细油藏地质研究为基础，从地质、测井、油藏工程等多个方面入手，开展以重建地质模型为核心的精细油藏描述研究。在地质方面，以沉积学理论为指导，采用“旋回为基础，标志层控制，三级对比，逐级细分”的旋对比方法，共计完成七个油组92个小层的精细模型,并根据岩相、古生物以及电性标志，确定了沉积微相类型和发育特征，进行剖面沉积微相研究，分析了沉积微相和砂体分布规律，结合储层测井参数解释结果，分别建立油藏规模、小层规模、单砂层规模的储层三维地质模型。
在油藏工程研究方面，依据水驱动用程度、水驱控制程度、经济极限井网密度等指标，对区块井网适应性进行评价，并通过综合分析含水与采出程度关系、水驱指数与含水关系和注水利用率等指标来综合评价区块的开发水平，建立了全油田模型，完成了储量拟合、历史拟合、剩余油分布规律研究,在此基础上提出了具体综合调整部署建议。
The article studies the work area of Shen611, which is located in the borders of Fahaniu,Qianjin and Damintun of Xinmin city in Liaoning province. Its regional structural location isin the north of Rong Sheng Pu depression of Damintun sag, whose north border is Shen116fault, west adjacent area is Block Shen69, and east adjacent area is Jing An Pu oilfield.Reservoir rock type is mainly medium-fine arkose, with deeply weathered and poor reservoirphysical property. The oil reservoir belongs to typical low permeable deep seated reservoir.From its development in1996, the reservoir’s development process has revealed distinctinterlayer interference because of obvious interlayer property difference and long interval,which gives reasons to deepening cognition of the reservoir, establishing fine3-D geologicalmodel, carrying out research on distribution of remaining oil and putting forward measuresfor tapping potential.
On the basis of meticulous and quantitative reservoir geological research, starting fromgeology, logging, oil reservoir engineering and so on, the study proceed fine reservoirdescription research is unfolded with the centre of reconstructed geologic model. Ingeological aspect, guiding by sedmentology, using cycle contrast method namely “cycle as thebasis, controled by key bed, contrasting through three grades, subdivided by degrees”,refinement single layer model containing seven groups of oil-bearing horizon and ninety-twosingle layers are established. According to lithofacies, paleontological and electrical marks,the type of sedimentary micro-facies and its developmental character is confirmed, theresearch on profile sedimentary micro-facies is carried out, and sedimentary micro-facies andsand body distribution law is further analyzed. And united the explanation result of logparameter, the reservoir3-D geological model is established including oil pool scale, sublayerscale, and single sand body scale.
In the aspect of oil reservoir engineering, according to producing degree ofwaterflooding, control degree of waterflooding, economic critical pattern size and so on, theadaptability of block well network is evaluated. Through analyzed the relationship betweenwater cut and degree of reserve recovery, the relationship between water drive index andwater cut, and effectiveness of water injection etc., the block’s development level iscomprehensively evaluated, the oilfield integrated model is established, the reserve curvefitting and production history fitting is accomplished, and then the distribution law ofremaining oil is studied. On the base of these, the concrete comprehensive adjustment anddisposition suggestions are advanced at last.
引文
[1]李道品.低渗透油田开发概论[J].大庆石油地质与开发，1997，16（3）：36
[2] Vernik L, Zoback M D. Estimation of maximum horizontal principal stressmagnitude from stress-induced well bore breakouts in the Cajon Pass scientificresearch borehole[J]. Journal of Geophysical Research,1992,97(B4)：5109-5119.
[3] STEHFEST H Remark on Algorithm368numerical inversion of Laplace transforms1970(10)
[4] MATTAX C C, KYTE. Imbibition Oil Recovery form Fractured, Water-DriveReservoir [J].SPEJ，1962.
[5] WARREN J E, ROOT P J. The Behavior of Naturally Fractured Reservoirs [J].SPEJ,1963.
[6]黄延章.低渗透油层非线性渗流特征[J].特种油气藏，1997，4（1）：10-11
[7]阎庆来.低渗透油田开发技术[M].北京：石油工业出版社，1993：27-45
[8]刘建军，裴桂红.裂缝性低渗透油藏流固耦合渗流分析[J].应用力学学报，2004，21（1）：37-38
[5]黎水泉,徐秉业,段永刚.裂缝性油藏流固耦合渗流[J].计算力学学报,2001,18(9):133～137
[10]计秉玉,陈剑,周锡生等.裂缝性低渗透油层渗吸作用的数学模型[J].清华大学学报(自然科学版),2002，42（6）：711-712
[11] HAMON G, VIDAL J. Scaling-Up the Cappilary Imbibition Process fromLaboratory Experiment on Homogeneous and Heterogeneous Samples[R].SPE15852.
[12] IFFLY R, ROUSSELET D C, VERMEULEN. Fundamental Study of Imbibition inFissured Oil Fields[R].SPE4012.
[13] AKIN S, SCHEMBER J S. Spontaneous Imbibition Characteristic ofDiatomite[J]. J. Pet.Sci.&Eng.25.
[14] CIL M, REIS J C. A Multi-Dimensional, Analytical Model for Counter-CurrentWater Imbibition into Gas Saturated Matrix Blocks[J].J. Pet. Sci.&Eng.25,1996.
[15]丁云宏，陈作，曾斌等.渗透率各向异性的低渗透油藏开发井网研究[J].石油学报2002(02)
[16]蔡喜东.姚约东.刘同敬.李东东低渗透裂缝性油藏渗吸过程影响因素研究[J].中国科技论文在线2009(11)
[17]蒲美玲.低渗透油气藏改造技术研究进展[J].内蒙古石油化工，2007，（12）：315
[18]徐守余．油藏描述方法原理[M].北京：石油工业出版社,2007:7-9
[19]刘波.基准面旋回与沉积旋回的对比方法探讨[J].沉积学报，2002，20（1）：112-113
[20] Baker R O，Kuppe F，Chugh S，et al. Full-field modeling usingStreamline-based simulation：4case studies[J].SPE66405，2002，5（2）：1-11
[21]于兴河，李胜利，赵舒等.河流相油气储层的井震结合相控随机建模约束方法[J].地学前缘(中国地质大学(北京)；北京大学)，2008，15（4）：34-35
[22]魏嘉，朱文斌，朱海龙等.地震沉积学—地震解释的新思路及沉积研究的新工具[J].勘探地球物理进展，2008，31（2）：97-98
[23]Zeng Hongliu. Ambrose W A. Seismic sedimentology and regional depositionalsystems in Mioceno Norte,Lake Maracaibo, Venezuela[J].The Leading Edge，2001，20(11)：1260～1269
[24]史彦尧,谢庆宾,彭仕宓等.大民屯凹陷沙四段层序地层与沉积体系研究[J].沉积与特提斯地质，2008，28（1）：35-36
[25]杨敏，董伟，江喻.储层沉积微相对非均质性影响的定量研究[J].断块油气田，2009，16（1）：37-38
[26]尹艳树，张昌民，李少华等.基于信息度的储层建模后处理方法[J].石油学报，2008，29（6）：890-891
[27]程勖,杨毅恒.变差函数中加权系数拟合方法的改善[J].地球物理学进展，2009，24（1）：362-363
[28]刘秀婷,杨军,杨纯东等.水驱油藏多目标井网优化方法新探讨[J].中外能源，2009，13（4）：43-44
[29]蔡厥珩，周吉培，黄红兵.评价注水油田注水利用率的一种新方法[J].特种油气藏，2003，13（2）：40-41
[30]叶继根，吴向红，朱怡翔等.大规模角点网格计算机辅助油藏模拟历史拟合方法研究[J].石油学报，2007，28（2）：83-84
[2] Vernik L, Zoback M D. Estimation of maximum horizontal principal stressmagnitude from stress-induced well bore breakouts in the Cajon Pass scientificresearch borehole[J]. Journal of Geophysical Research,1992,97(B4)：5109-5119.
[3] STEHFEST H Remark on Algorithm368numerical inversion of Laplace transforms1970(10)
[4] MATTAX C C, KYTE. Imbibition Oil Recovery form Fractured, Water-DriveReservoir [J].SPEJ，1962.
[5] WARREN J E, ROOT P J. The Behavior of Naturally Fractured Reservoirs [J].SPEJ,1963.
[6]黄延章.低渗透油层非线性渗流特征[J].特种油气藏，1997，4（1）：10-11
[7]阎庆来.低渗透油田开发技术[M].北京：石油工业出版社，1993：27-45
[8]刘建军，裴桂红.裂缝性低渗透油藏流固耦合渗流分析[J].应用力学学报，2004，21（1）：37-38
[5]黎水泉,徐秉业,段永刚.裂缝性油藏流固耦合渗流[J].计算力学学报,2001,18(9):133～137
[10]计秉玉,陈剑,周锡生等.裂缝性低渗透油层渗吸作用的数学模型[J].清华大学学报(自然科学版),2002，42（6）：711-712
[11] HAMON G, VIDAL J. Scaling-Up the Cappilary Imbibition Process fromLaboratory Experiment on Homogeneous and Heterogeneous Samples[R].SPE15852.
[12] IFFLY R, ROUSSELET D C, VERMEULEN. Fundamental Study of Imbibition inFissured Oil Fields[R].SPE4012.
[13] AKIN S, SCHEMBER J S. Spontaneous Imbibition Characteristic ofDiatomite[J]. J. Pet.Sci.&Eng.25.
[14] CIL M, REIS J C. A Multi-Dimensional, Analytical Model for Counter-CurrentWater Imbibition into Gas Saturated Matrix Blocks[J].J. Pet. Sci.&Eng.25,1996.
[15]丁云宏，陈作，曾斌等.渗透率各向异性的低渗透油藏开发井网研究[J].石油学报2002(02)
[16]蔡喜东.姚约东.刘同敬.李东东低渗透裂缝性油藏渗吸过程影响因素研究[J].中国科技论文在线2009(11)
[17]蒲美玲.低渗透油气藏改造技术研究进展[J].内蒙古石油化工，2007，（12）：315
[18]徐守余．油藏描述方法原理[M].北京：石油工业出版社,2007:7-9
[19]刘波.基准面旋回与沉积旋回的对比方法探讨[J].沉积学报，2002，20（1）：112-113
[20] Baker R O，Kuppe F，Chugh S，et al. Full-field modeling usingStreamline-based simulation：4case studies[J].SPE66405，2002，5（2）：1-11
[21]于兴河，李胜利，赵舒等.河流相油气储层的井震结合相控随机建模约束方法[J].地学前缘(中国地质大学(北京)；北京大学)，2008，15（4）：34-35
[22]魏嘉，朱文斌，朱海龙等.地震沉积学—地震解释的新思路及沉积研究的新工具[J].勘探地球物理进展，2008，31（2）：97-98
[23]Zeng Hongliu. Ambrose W A. Seismic sedimentology and regional depositionalsystems in Mioceno Norte,Lake Maracaibo, Venezuela[J].The Leading Edge，2001，20(11)：1260～1269
[24]史彦尧,谢庆宾,彭仕宓等.大民屯凹陷沙四段层序地层与沉积体系研究[J].沉积与特提斯地质，2008，28（1）：35-36
[25]杨敏，董伟，江喻.储层沉积微相对非均质性影响的定量研究[J].断块油气田，2009，16（1）：37-38
[26]尹艳树，张昌民，李少华等.基于信息度的储层建模后处理方法[J].石油学报，2008，29（6）：890-891
[27]程勖,杨毅恒.变差函数中加权系数拟合方法的改善[J].地球物理学进展，2009，24（1）：362-363
[28]刘秀婷,杨军,杨纯东等.水驱油藏多目标井网优化方法新探讨[J].中外能源，2009，13（4）：43-44
[29]蔡厥珩，周吉培，黄红兵.评价注水油田注水利用率的一种新方法[J].特种油气藏，2003，13（2）：40-41
[30]叶继根，吴向红，朱怡翔等.大规模角点网格计算机辅助油藏模拟历史拟合方法研究[J].石油学报，2007，28（2）：83-84