大安油田大208区精细油藏研究
|
摘要
大安油田大208区位于松辽盆地中央坳陷区大安——红岗阶地二级构造带,为中央坳陷区和西部斜坡区两个相对升降运动的一级构造单元过渡带,属于阶地挤压构造油气聚集带。该区主要开发扶杨特低渗透油层,储层物性差,开发难度大。本研究通过对大208区三维地震资料、岩心资料和矿场动态数据的综合分析,开展油藏精细地质研究,确定研究区油层发育特征、储层四性关系及储层分布规律,进行扶杨油层储层三维地质建模,以指导该区域剩余油的研究和开发,为今后制定开发对策及调整方案提供依据。具体包括如下工作及成果:
通过取芯井岩芯观察,确定该区域岩芯沉积微相类型及发育规律和特征,对每口井的每个小层或砂岩组进行沉积微相人工解释,确定岩—电对应关系标准,建立每口单井纵向沉积微相模型。
在岩芯观察和测井资料综合解释的基础上,进行小层重新划分与对比,建立高分辨率层序控制下的小层体系。以岩石地层学和高分辨率层序地层学指导,应用点、线、面三位一体的方法,对扶杨油层67口井25个小层进行精细的小层划分与对比,建立精细的小层模型。
根据试油、投产结果,开展四性特征及四性关系研究,建立油层识别电性界限,开展测井资料二次数字处理,对油水层进行综合解释工作,划分有效厚度。
结合小层精细对比的结果,通过三维地震资料的精细解释,建立三维精细的构造地层模型,为精细储层模型的建立提供重要的基础资料。
在上述研究的基础上,确定该区储层砂体空间分布的统计模型,为砂体骨架预测模型的建立提供参数,结合测井资料处理,分析工区沉积微相对储层物性的影响。
根据小层对比及沉积微相研究成果,利用趋势和目标模拟相结合的方法,对小层或砂组的沉积微相进行模拟。
应用地质统计学、相控随机模拟的方法,利用PETREL油藏建模软件,对储层的分布和物性参数进行相控随机建模,建立基质及其属性三维模型。
Region 208 of Da’an Oilfield, an oil-gas accumulation zone squeezed by terrace structures, lies in the second tectonic zone of Da’an-Honggang terrace at the central depressed area of Songliao Basin. It belongs to a transition belt between two first grade structural units with relatively up-and-down movement as the central depressed area and the western slope area. The low permeable targets of Fu and Yang, which are developed as the main pay zones, have poor physical properties and are difficult to exploit. In this paper the fine reservoir geology were studied at the Region 208 of Da’an Oilfield by comprehensive analyses of the 3-D seismic method, core data and the dynamic information to determine the features of the oil layers development, the relations between 4 reservoir properties and the distribution laws of oil formation, then to build the 3-D model of Fu-Yang targets. This study would be meaningful to guide the studies and development of the residual oil inside this area, and to provide further foundation for the development methods and the adjustment program. There are fruits as following:
Firstly cores from holes were surveyed to determine the types of sedimental microfacies and their development laws and features of the rocks within this area. For each substratum or sand group, the sedimental microfacies were interpreted manually to determine the standard of the relation between rock and electricity and to construct the model of the vertical sedimental microfacies of every well.
On the combined bases of core survey and logging information, the substratum was divided and compared again to the substratum system under the control of high-resolution strata sequence. Based on the stratigraphy of the rock and the high-resolution strata sequence, in usage of the integrated method system of points, lines and fancies, the fine substratum model was built by closely division and comparison for the 25 substrata in the 67 wells of Fu-Yang reservoir.
According to the results of oil testing and production, the relationship of the 4 properties were studied to build the electricity recognition limit of the pay zone. The well logging information was treated secondly digitally to interpret the oil-water layers comprehensively and to divide the effective thickness.
With the results of the fine substratum contrast, by the fine interpretation with 3-D seismic data, a 3-D fine structural reservoir model was built to provide important bases for the fine reservoir model.
In sum of the above studies, the statistical model about the space distribution of reservoir sand body was then fixed to provide parameters for the predictive model of the sand body skeleton. And in combination with the treatment of the logging data the effect of sedimental microfacies on reservoir physical properties was analyzed for the target area.
In accordance with results of both substratum comparison and studies on sedimental microfacies, the two modeling methods of both trend and target were used to simulate the sedimental microfacies of substrata or sandstone groups.
The reservoir model construction software, Petrel, is used to build the 3-D phased model of the Matrix and its properties such as the physical parameters and their random distribution.
通过取芯井岩芯观察,确定该区域岩芯沉积微相类型及发育规律和特征,对每口井的每个小层或砂岩组进行沉积微相人工解释,确定岩—电对应关系标准,建立每口单井纵向沉积微相模型。
在岩芯观察和测井资料综合解释的基础上,进行小层重新划分与对比,建立高分辨率层序控制下的小层体系。以岩石地层学和高分辨率层序地层学指导,应用点、线、面三位一体的方法,对扶杨油层67口井25个小层进行精细的小层划分与对比,建立精细的小层模型。
根据试油、投产结果,开展四性特征及四性关系研究,建立油层识别电性界限,开展测井资料二次数字处理,对油水层进行综合解释工作,划分有效厚度。
结合小层精细对比的结果,通过三维地震资料的精细解释,建立三维精细的构造地层模型,为精细储层模型的建立提供重要的基础资料。
在上述研究的基础上,确定该区储层砂体空间分布的统计模型,为砂体骨架预测模型的建立提供参数,结合测井资料处理,分析工区沉积微相对储层物性的影响。
根据小层对比及沉积微相研究成果,利用趋势和目标模拟相结合的方法,对小层或砂组的沉积微相进行模拟。
应用地质统计学、相控随机模拟的方法,利用PETREL油藏建模软件,对储层的分布和物性参数进行相控随机建模,建立基质及其属性三维模型。
Region 208 of Da’an Oilfield, an oil-gas accumulation zone squeezed by terrace structures, lies in the second tectonic zone of Da’an-Honggang terrace at the central depressed area of Songliao Basin. It belongs to a transition belt between two first grade structural units with relatively up-and-down movement as the central depressed area and the western slope area. The low permeable targets of Fu and Yang, which are developed as the main pay zones, have poor physical properties and are difficult to exploit. In this paper the fine reservoir geology were studied at the Region 208 of Da’an Oilfield by comprehensive analyses of the 3-D seismic method, core data and the dynamic information to determine the features of the oil layers development, the relations between 4 reservoir properties and the distribution laws of oil formation, then to build the 3-D model of Fu-Yang targets. This study would be meaningful to guide the studies and development of the residual oil inside this area, and to provide further foundation for the development methods and the adjustment program. There are fruits as following:
Firstly cores from holes were surveyed to determine the types of sedimental microfacies and their development laws and features of the rocks within this area. For each substratum or sand group, the sedimental microfacies were interpreted manually to determine the standard of the relation between rock and electricity and to construct the model of the vertical sedimental microfacies of every well.
On the combined bases of core survey and logging information, the substratum was divided and compared again to the substratum system under the control of high-resolution strata sequence. Based on the stratigraphy of the rock and the high-resolution strata sequence, in usage of the integrated method system of points, lines and fancies, the fine substratum model was built by closely division and comparison for the 25 substrata in the 67 wells of Fu-Yang reservoir.
According to the results of oil testing and production, the relationship of the 4 properties were studied to build the electricity recognition limit of the pay zone. The well logging information was treated secondly digitally to interpret the oil-water layers comprehensively and to divide the effective thickness.
With the results of the fine substratum contrast, by the fine interpretation with 3-D seismic data, a 3-D fine structural reservoir model was built to provide important bases for the fine reservoir model.
In sum of the above studies, the statistical model about the space distribution of reservoir sand body was then fixed to provide parameters for the predictive model of the sand body skeleton. And in combination with the treatment of the logging data the effect of sedimental microfacies on reservoir physical properties was analyzed for the target area.
In accordance with results of both substratum comparison and studies on sedimental microfacies, the two modeling methods of both trend and target were used to simulate the sedimental microfacies of substrata or sandstone groups.
The reservoir model construction software, Petrel, is used to build the 3-D phased model of the Matrix and its properties such as the physical parameters and their random distribution.
引文
[1] Calhoun J. R.. Fundamentals of Reservoir Engineering. University of Okahoma Press, 1976
[2]Haldorson. H.H. etal:“Stochastic Modeling.”JPT, April.1990. P404—412.
[3]Haldorson, H.H. etal:“Challenges in Reservoir Characterization.”“AAPG Bulletin”April,1993, P541—551.
[4]裘亦楠等人.油藏描述[M].北京:石油工业出版社,1996.
[5]穆龙新等人.不同开发阶段的油藏描述[M].北京:石油工业出版社,1999.
[6]申本科等人.油藏描述技术发展与展望.石油勘探与开发,2003,30(4):78—81.
[7]王继贤.油藏描述软件系统及其应用[M].北京:石油工业出版社,1993.
[8]刘泽容,信荃麟,等.油藏描述原理与方法技术[M].北京:石油工业出版社,1993.
[9]文秋杰.文南油田文95断块区剩余油分布研究[J].石油勘探与开发,2002,29(3):56—58.
[10]尹太举.依据高分辨率层序地层学进行剩余油分布预测[J].石油勘探与开发,2000,28(4):79—82.
[11]甄维胜,吕新华,等.复杂断块油田非均质精细油藏描述技术—以中原胡状集油田为例[M].北京:石油工业出版社,2001.
[12]张幸福,周嘉玺.陆相复杂断块油田精细油藏描述技术[M].北京:石油工业出版社,2001.
[13]周丽清,熊琦华,等.随机建模中相模型的优选验证原则[J].石油勘探与开发,2001,28(1):68—71.
[14]周丽清,赵丽敏,等.高分辨率地震约束相建摸[J].石油勘探与开发,2002,29(3):56—58.
[15]陈蓉,张传宝,等.三维可视化技术在吉和油田开发中的应用[J].石油勘探与开发,2001,28(6):87—88.
[16]张一伟等.陆相油藏描述.北京:石油工业出版社,1997.
[17]穆龙新.现代油藏精细描述技术和方法.2000.
[18]Goggin. D.J. etal.:“Permeability Fields.”Paper SPE 19586,1989.
[19]Kittridge, M.G. et al.:“Outerop/Subsurface Comparisons of Heterogeneity in the San Andres Formation,”Paper SPE 19596,1989.
[20]Matthews .J.L. etal.:“Fractal Methods Improve Mitsue Miscible Predictions,”JPT(Nov.1989):1136-42.
[21]Arnold, L.:“Stochastic Differential Equations: Theory and Applications,”John Wiley&Sons, New York City(1974).
[22]Dubrule, O.:“A Review of Stochastic Models for Petroleum Reservoirs,”Paper Presented at the 1988 British Soc. Reservoir Geologists Meeting on Quantification of Sediment BodyGeometries and Their Internal Heterogeneities, London. March1-2.
[23]Weber, K.J. etal.:“Framework for Constructing Clastic Reservoir Simulation Models,”Paper SPE 19582,1989.
[24]Allen, J.R.L.:“Studies in Fluviatile Sedimentation: An Exploratory Quantitative Model for the Architecture of Avulsion-Controlled Alluvial Suites,”Sedimentary Geology(1978)21,129-47. [25]Knutson, C.F.:“Modeling of Noncontinuous Fort Union Mesaverde Sandstone Reservoirs, Piceance Basin, Northwestern Colorado,”SPEJ(Aug.1976)175-88.
[26]Bridge, J.S. and Leeder, M.R.:“A Simulation Model of Alluvial Stratigraphy,”Sedimentology(1979)26,617-44.
[27]Augedal, H.O., Stanley, K.O., and More, H.:“SISABOSA, a Program for Stochastic Modeling and Evaluation of Reservoir Geology,”Report SAND 18/86 presented at the 1986 Conference on Reservoir Description and Simulation with Emphasis on EOR, Oslo, Sept.5-7.
[28]Haldorsen, H.H., Brand, P.J., and Macdonald, C.J.:“Review of the Stochastic Nature of Reservoirs,”Mathematics in Oil Production, S. Edwards and P. King(eds.), Oxford Science Publications, Clarendon Press, Oxford(1988) 109-209.
[29]Gundese, R. and Egeland, O.:“SESIMIRA-A New Geological Tool for 3-D Modeling of Heterogeneous Reservoirs,”Paper presented at the 1989 Intl. Conference on North Sea oil and Gas Reservoirs, Trondheim, May 8-11.
[30]Wadsley, A.W., Erlandsen, S., and Goemans H.W.:“HES, A Tool for Integrated Fluvial Architecture Modeling and Numerical Simulation of Recovery Processes.”Paper presented at the 1989 Intl. Conference on North Sea Oil and Gas Reservoirs, Trondheim, May 8-11.
[31]King, P.R.:“The Connectivity and Conductivity of Overlapping Sandbodies,”paper presented at the 1989 Intl. Conference on North Sea Oil and Gas Reservoirs, Trondheim, May 8-11.
[32]Meling, L.M., Mφrkeseth, P.O., and Langelakmd, T.:“Production Forecasting for Gas Fields With Multiple Reservoirs of Limited Extent,”paper SPE 18287 presented at the 1988 SPE Annual Technical Conference and Exhibition, Houston, Oct. 2-5.
[33]Smith P.J. and Morgan,D.T.K.:“Modelling Faulted and Fuvial Reservoirs,“paper SPE 15853 presented at the 1986 SPE European Petroleum Conference,London,Oct.20-22.
[34]Delhome,A.E.K. and Giannesini,J.F.:“New Reservoir Description Techniques Improve Simulation Results in Hassi-Messaoud Field—Algeria,”paper SPE 8435 presented at the 1979 SPE Annual Technical Conference and Exhibition,LasVegas,Spet.23-26.
[35]Haldorsen,H.H.;“On the Modeling of Vertical Permeabilitjy Barries in Single-Well Simulation Models,”SPEFE(Spet.1989)349-58.
[36]Long,J.C.S. and Witherspoon,P.A.:“The Relationship of Interconnection to Pemeability in Fracture Networks,”J.Geophys.Res.(1985)90,No.B4,3087-98.
[37]Matheron,G.etal.:“Conditional Simulation of the Geometry of Fluvio-Deltaic Reservoirs,”paper SPE 16753 presented at the 1987 SPE Annual Technical Conference and Eihibition.Dallas,Sept.27-30.
[2]Haldorson. H.H. etal:“Stochastic Modeling.”JPT, April.1990. P404—412.
[3]Haldorson, H.H. etal:“Challenges in Reservoir Characterization.”“AAPG Bulletin”April,1993, P541—551.
[4]裘亦楠等人.油藏描述[M].北京:石油工业出版社,1996.
[5]穆龙新等人.不同开发阶段的油藏描述[M].北京:石油工业出版社,1999.
[6]申本科等人.油藏描述技术发展与展望.石油勘探与开发,2003,30(4):78—81.
[7]王继贤.油藏描述软件系统及其应用[M].北京:石油工业出版社,1993.
[8]刘泽容,信荃麟,等.油藏描述原理与方法技术[M].北京:石油工业出版社,1993.
[9]文秋杰.文南油田文95断块区剩余油分布研究[J].石油勘探与开发,2002,29(3):56—58.
[10]尹太举.依据高分辨率层序地层学进行剩余油分布预测[J].石油勘探与开发,2000,28(4):79—82.
[11]甄维胜,吕新华,等.复杂断块油田非均质精细油藏描述技术—以中原胡状集油田为例[M].北京:石油工业出版社,2001.
[12]张幸福,周嘉玺.陆相复杂断块油田精细油藏描述技术[M].北京:石油工业出版社,2001.
[13]周丽清,熊琦华,等.随机建模中相模型的优选验证原则[J].石油勘探与开发,2001,28(1):68—71.
[14]周丽清,赵丽敏,等.高分辨率地震约束相建摸[J].石油勘探与开发,2002,29(3):56—58.
[15]陈蓉,张传宝,等.三维可视化技术在吉和油田开发中的应用[J].石油勘探与开发,2001,28(6):87—88.
[16]张一伟等.陆相油藏描述.北京:石油工业出版社,1997.
[17]穆龙新.现代油藏精细描述技术和方法.2000.
[18]Goggin. D.J. etal.:“Permeability Fields.”Paper SPE 19586,1989.
[19]Kittridge, M.G. et al.:“Outerop/Subsurface Comparisons of Heterogeneity in the San Andres Formation,”Paper SPE 19596,1989.
[20]Matthews .J.L. etal.:“Fractal Methods Improve Mitsue Miscible Predictions,”JPT(Nov.1989):1136-42.
[21]Arnold, L.:“Stochastic Differential Equations: Theory and Applications,”John Wiley&Sons, New York City(1974).
[22]Dubrule, O.:“A Review of Stochastic Models for Petroleum Reservoirs,”Paper Presented at the 1988 British Soc. Reservoir Geologists Meeting on Quantification of Sediment BodyGeometries and Their Internal Heterogeneities, London. March1-2.
[23]Weber, K.J. etal.:“Framework for Constructing Clastic Reservoir Simulation Models,”Paper SPE 19582,1989.
[24]Allen, J.R.L.:“Studies in Fluviatile Sedimentation: An Exploratory Quantitative Model for the Architecture of Avulsion-Controlled Alluvial Suites,”Sedimentary Geology(1978)21,129-47. [25]Knutson, C.F.:“Modeling of Noncontinuous Fort Union Mesaverde Sandstone Reservoirs, Piceance Basin, Northwestern Colorado,”SPEJ(Aug.1976)175-88.
[26]Bridge, J.S. and Leeder, M.R.:“A Simulation Model of Alluvial Stratigraphy,”Sedimentology(1979)26,617-44.
[27]Augedal, H.O., Stanley, K.O., and More, H.:“SISABOSA, a Program for Stochastic Modeling and Evaluation of Reservoir Geology,”Report SAND 18/86 presented at the 1986 Conference on Reservoir Description and Simulation with Emphasis on EOR, Oslo, Sept.5-7.
[28]Haldorsen, H.H., Brand, P.J., and Macdonald, C.J.:“Review of the Stochastic Nature of Reservoirs,”Mathematics in Oil Production, S. Edwards and P. King(eds.), Oxford Science Publications, Clarendon Press, Oxford(1988) 109-209.
[29]Gundese, R. and Egeland, O.:“SESIMIRA-A New Geological Tool for 3-D Modeling of Heterogeneous Reservoirs,”Paper presented at the 1989 Intl. Conference on North Sea oil and Gas Reservoirs, Trondheim, May 8-11.
[30]Wadsley, A.W., Erlandsen, S., and Goemans H.W.:“HES, A Tool for Integrated Fluvial Architecture Modeling and Numerical Simulation of Recovery Processes.”Paper presented at the 1989 Intl. Conference on North Sea Oil and Gas Reservoirs, Trondheim, May 8-11.
[31]King, P.R.:“The Connectivity and Conductivity of Overlapping Sandbodies,”paper presented at the 1989 Intl. Conference on North Sea Oil and Gas Reservoirs, Trondheim, May 8-11.
[32]Meling, L.M., Mφrkeseth, P.O., and Langelakmd, T.:“Production Forecasting for Gas Fields With Multiple Reservoirs of Limited Extent,”paper SPE 18287 presented at the 1988 SPE Annual Technical Conference and Exhibition, Houston, Oct. 2-5.
[33]Smith P.J. and Morgan,D.T.K.:“Modelling Faulted and Fuvial Reservoirs,“paper SPE 15853 presented at the 1986 SPE European Petroleum Conference,London,Oct.20-22.
[34]Delhome,A.E.K. and Giannesini,J.F.:“New Reservoir Description Techniques Improve Simulation Results in Hassi-Messaoud Field—Algeria,”paper SPE 8435 presented at the 1979 SPE Annual Technical Conference and Exhibition,LasVegas,Spet.23-26.
[35]Haldorsen,H.H.;“On the Modeling of Vertical Permeabilitjy Barries in Single-Well Simulation Models,”SPEFE(Spet.1989)349-58.
[36]Long,J.C.S. and Witherspoon,P.A.:“The Relationship of Interconnection to Pemeability in Fracture Networks,”J.Geophys.Res.(1985)90,No.B4,3087-98.
[37]Matheron,G.etal.:“Conditional Simulation of the Geometry of Fluvio-Deltaic Reservoirs,”paper SPE 16753 presented at the 1987 SPE Annual Technical Conference and Eihibition.Dallas,Sept.27-30.
© 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 |