辽河油田静35块剩余油分布及挖潜措施研究
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摘要
本文所要研究的静35区块位于辽宁省沈阳市于洪区马三家子乡境内,构造上位于大民屯凹陷边台—法哈牛构造断裂带北端,西临静安堡断裂构造带,东为曹台潜山。油藏类型为构造～岩性油藏,油层埋深为-1080～-1680m,储层物性较差。自1990年投入开发以来,采取了系列增产措施,如蒸汽吞吐、化学溶剂解堵、电磁加热、微生物吞吐和微生物驱等,效果均不明显。
本次研究以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,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。
This article is to study the Jing 35 block is located in Shenyang City, Liaoning Province Masanjiazi rural territory Yuhong District, structure on the northern of Biantai - Fahaniu of fault tectonic zone of Damintun depression, the west is next to Jinganpu fault tectonic zone, the east is Caotai burial hill. The type of Reservoir is lithology ~ structural reservoir, reservoir depth is -1080 ~-1680m, and reservoir properties are poor. Since 1990 investment in development, which has taken a series of measures to increase production, such as cyclic steam stimulation, chemical solvents plugging, electromagnetic heating, micro-organisms stimulation and microbial flooding and so on, the effect is all not obvious.
On the basis of meticulous and quantitative reservoir geological research, starting from geology, logging, oil reservoir engineering and so on, the study proceed fine reservoir description research is unfolded with the centre of reconstructed geologic model. In geological aspect, guiding by sedmentology, using cycle contrast method namely“cycle as the basis, controled by key bed, contrasting through three grades, subdivided by degrees”, refinement single layer model containing seven groups of oil-bearing horizon and ninety-two single layers are established. According to lithofacies, paleontological and electrical marks, the type of sedimentary micro-facies and its developmental character is confirmed, the research on profile sedimentary micro-facies is carried out, and sedimentary micro-facies and sand body distribution law is further analyzed. And united the explanation result of log parameter, the reservoir 3-D geological model is established including oil pool scale, sublayer scale, and single sand body scale.
In the aspect of oil reservoir engineering, according to producing degree of waterflooding, control degree of waterflooding, economic critical pattern size and so on, the adaptability of block well network is evaluated. Through analyzed the relationship between water cut and degree of reserve recovery, the relationship between water drive index and water cut, and effectiveness of water injection etc., the block’s development level is comprehensively evaluated, the oilfield integrated model is established, the reserve curve fitting and production history fitting is accomplished, and then the distribution law of remaining oil is studied. On the base of these, the concrete comprehensive adjustment and disposition suggestions are advanced at last.
本次研究以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,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。
This article is to study the Jing 35 block is located in Shenyang City, Liaoning Province Masanjiazi rural territory Yuhong District, structure on the northern of Biantai - Fahaniu of fault tectonic zone of Damintun depression, the west is next to Jinganpu fault tectonic zone, the east is Caotai burial hill. The type of Reservoir is lithology ~ structural reservoir, reservoir depth is -1080 ~-1680m, and reservoir properties are poor. Since 1990 investment in development, which has taken a series of measures to increase production, such as cyclic steam stimulation, chemical solvents plugging, electromagnetic heating, micro-organisms stimulation and microbial flooding and so on, the effect is all not obvious.
On the basis of meticulous and quantitative reservoir geological research, starting from geology, logging, oil reservoir engineering and so on, the study proceed fine reservoir description research is unfolded with the centre of reconstructed geologic model. In geological aspect, guiding by sedmentology, using cycle contrast method namely“cycle as the basis, controled by key bed, contrasting through three grades, subdivided by degrees”, refinement single layer model containing seven groups of oil-bearing horizon and ninety-two single layers are established. According to lithofacies, paleontological and electrical marks, the type of sedimentary micro-facies and its developmental character is confirmed, the research on profile sedimentary micro-facies is carried out, and sedimentary micro-facies and sand body distribution law is further analyzed. And united the explanation result of log parameter, the reservoir 3-D geological model is established including oil pool scale, sublayer scale, and single sand body scale.
In the aspect of oil reservoir engineering, according to producing degree of waterflooding, control degree of waterflooding, economic critical pattern size and so on, the adaptability of block well network is evaluated. Through analyzed the relationship between water cut and degree of reserve recovery, the relationship between water drive index and water cut, and effectiveness of water injection etc., the block’s development level is comprehensively evaluated, the oilfield integrated model is established, the reserve curve fitting and production history fitting is accomplished, and then the distribution law of remaining oil is studied. On the base of these, the concrete comprehensive adjustment and disposition 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]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
[3]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
[4]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 (2) :133～137
[6]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
[7]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
[8]徐守余.油藏描述方法原理[M].北京:石油工业出版社, 2007: 7-9
[9]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
[10] Baker R O,Kuppe F,Chugh S,et al. Full-field modeling using Streamline-based simulation:4 case studies[J].SPE 66405,2002,5(2):1-11
[11]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
[12]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
[13]Zeng Hongliu. Ambrose W A. Seismic sedimentology and regional depositional systems in Mioceno Norte ,Lake Maracaibo , Venezuela[J].The Leading Edge,2001,20 (11):1260～1269
[14]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
[15]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
[16]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
[17]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
[18]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
[19]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
[20]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
[2]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
[3]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
[4]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 (2) :133～137
[6]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
[7]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
[8]徐守余.油藏描述方法原理[M].北京:石油工业出版社, 2007: 7-9
[9]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
[10] Baker R O,Kuppe F,Chugh S,et al. Full-field modeling using Streamline-based simulation:4 case studies[J].SPE 66405,2002,5(2):1-11
[11]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
[12]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
[13]Zeng Hongliu. Ambrose W A. Seismic sedimentology and regional depositional systems in Mioceno Norte ,Lake Maracaibo , Venezuela[J].The Leading Edge,2001,20 (11):1260～1269
[14]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
[15]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
[16]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
[17]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
[18]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
[19]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
[20]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