南海西部涠洲11-1N油田流沙港组一段扇三角洲储层构型建模
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摘要
南海北部湾盆地涠洲11-1N油田流沙港组一段储层为较深水环境扇三角洲沉积体系,层间、层内和平面矛盾突出,剩余油分布认识不清。采用基于目标模拟的构型建模方法,在构型模式的基础上应用交互式方法设置目标的构型基本单元,通过模式控制下多次随机模拟得到的统计结果与沉积模式进行精细对比,提高了相模式的垂向分辨率,得到了各个沉积微相基本单元的大小、方向和展布规律,多参数、全方位的模拟得到了精细构型模型,并通过静态盲井和动态流线模拟对模型进行了验证。在构型模型研究的基础上对油田注采连通性与剩余油分布有了新的认识,指导实施了1口注水井调驱,3口受效井含水率均有下降,合计增油90 m~3/d,同时指导了3口调整井的井位部署。
The First Member of Liushagang Formation(L_1) of WZ11-1 N oilfield in Beibuwan basin of South China Sea develops the deep water fan delta sedimentary system, where the inter-layer, intra-layer and planar contradictions are prominent, and the remaining oil distribution is poorly understood. Based on the target simulation-oriented configuration modeling method, the interactive method was used to set the basic unit of the target structure, and the statistical results obtained by multiple random simulations under the pattern control were finely contrasted with the deposition a patterns, thus improving the vertical resolution of facies mode, and obtaining the size, direction and distribution law of the basic units of each sedimentary microfacies. One fine configuration model was built by means of multi-parameter and omni-directional simulations, and was validated through static blind wells and dynamic streamline simulation. The configuration model study provides new understandings on oilfield injection-production connectivity and residual oil distribution. This model was used to guide the profile control of one water injector, and water contents of three affected wells were decreased, and the total oil production is increased to 90 m~3/d; additionally, this model was used to guide the well location deployment of three adjustment wells.
The First Member of Liushagang Formation(L_1) of WZ11-1 N oilfield in Beibuwan basin of South China Sea develops the deep water fan delta sedimentary system, where the inter-layer, intra-layer and planar contradictions are prominent, and the remaining oil distribution is poorly understood. Based on the target simulation-oriented configuration modeling method, the interactive method was used to set the basic unit of the target structure, and the statistical results obtained by multiple random simulations under the pattern control were finely contrasted with the deposition a patterns, thus improving the vertical resolution of facies mode, and obtaining the size, direction and distribution law of the basic units of each sedimentary microfacies. One fine configuration model was built by means of multi-parameter and omni-directional simulations, and was validated through static blind wells and dynamic streamline simulation. The configuration model study provides new understandings on oilfield injection-production connectivity and residual oil distribution. This model was used to guide the profile control of one water injector, and water contents of three affected wells were decreased, and the total oil production is increased to 90 m~3/d; additionally, this model was used to guide the well location deployment of three adjustment wells.
引文
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[14] 刘可可,侯加根,刘钰铭,等.多点地质统计学在点坝内部构型三维建模中的应用[J].石油与天然气地质,2016,37(4):578-582.LIU Keke,HOU Jiagen,LIU Yuming,et al.Application of multiple-point geostatistics in 3D internal architecture modeling of point bar[J].Oil & Gas Geology,2016,37(4):578-582.
[15] 吴胜和.储层表征与建模[M].北京:石油工业出版社,2010.
[16] 李少华,张昌民,尹艳树.河流相储层随机建模的几种方法[J].西安石油学院学报(自然科学版),2003,18(5):10-16.LI Shaohua,ZHANG Changmin,YIN Yanshu.Several methods for stochastic modeling of fluvial facies reservoirs.[J].Journal of Xi'an Petroleum Institute (Natural Science Edition),2003,18(5):10-16.
[2] MALLET J L.Discrete smooth interpolation[J].ACM Trans-actions on Graphics,1989,8(2):121-144.
[3] MALLET J L.Discrete smooth interpolation in geometric modeling[J].Computer Aided Design,1992,24(4):177-191.
[4] SYVERSVEEN A R. Marked point process for facies units conditioned on well data[A].Wollong,1996.
[5] DEUTSCH C V,TRAN T T.FLUVSIM:A program for object-based stochastic modeling of fluvial depositional systems [J].Computers & Geosciences,2002,28(4):525-535.
[6] 兰丽凤,白振强,于德水,等.曲流河砂体三维构型地质建模及应用[J].西南石油大学学报(自然科学版),2010,32(4):20-25.LAN Lifeng,BAI Zhenqiang,YU Deshui,et al.Study on geological 3D reservoir architecture modeling of meandering reservoir and its application[J].Journal of South West Petroleum University (Science &Technology Edition),2010,32,(4):20-25.
[7] 林煜,吴胜和,岳大力,等.扇三角洲前缘储层构型精细解剖:以辽河油田曙2-6-6区块杜家台油层为例[J].天然气地球科学,2013,24(2):335-344.LIN Yu,WU Shenghe,YUE Dali,et al. Fine anatomizing reservoir architecture of fan-delta front:A case study on Dujiatai Reservoir in Shu2-6-6 Block,Liaohe Oilfield[J].Natural Gas Geoscience,2013,24(2):335-344.
[8] CORBEANU R M,SOEGAARD K.Detailed internal architecture of a fluvial channel sandstone determined from outcrop,cores,and 3D-groundpenet-rating radar:Example from the middle Cretaceous Ferron Sandstone,east-central Utah [J].AAPG,2001,85(9):1583-1608.
[9] 金振奎,杨有星,尚建林,等.辫状河砂体构型及定量参数研究:以阜康、柳林和延安地区辫状河露头为例[J].天然气地球科学,2014,25(3):311-317.JIN Zhenkui,YANG Youxing,SHANG Jianlin,et al.Sandbody architecture and quantitative parameters of single channel sandbodys of braided river:Cases from outcrops of braided river in Fukang,Liulin and Yanans areas[J].Natural Gas Geoscience,2014,25(3):311-317.
[10] 付晶,吴胜和,王哲,等.湖盆浅水三角洲分流河道储层构型模式:以鄂尔多斯盆地东缘延长组野外露头为例[J].中南大学学报(自然科学版),2015,46(11):4174-4182.FU Jing,WU Shenghe,WANG Zhe,et al.Architecture model of shallow-water delta distributary channel in lake basin:A case study of the Yanchang Formation outcrops in the Eastern margin of Ordos Basin [J].Journal of Central South University(Seciece and Technology),2015,46(11):4174-4182.
[11] 范峥,吴胜和,岳大力,等.曲流河点坝内部构型的嵌入式建模方法研究[J].中国石油大学学报(自然科学版),2012,36(3):1-6.FAN Zheng,WU Shenghe,YUE Dali,et al.Embedding modeling for internal architecture of point bar sand body in meandering river reservoir[J].Journal of Chinese University of Petroleum(Edition of Natural Science),2012,36(3):1-6.
[12] PYRCZ M J,BOISVERT J B,DEUTSCH C V.AllUVSIM:A program for event-based stochastic modeling of fluvialdepositional systems[J].Computers & Geosiences,2009,35(8):1671-1685.
[13] 潘少伟,罗海宁,郭智.序贯指示模拟法夹层模型建立[J].西南石油大学学报(自然科学版),2014,36(5):60-66.PAN Shaowei,LUO Haining,GUO Zhi.Interlayer modeling with sequential indicator simulation method[J].Journal of Southwest Petroleum University(Science & Technology Edition),2014,36(5):60-66.
[14] 刘可可,侯加根,刘钰铭,等.多点地质统计学在点坝内部构型三维建模中的应用[J].石油与天然气地质,2016,37(4):578-582.LIU Keke,HOU Jiagen,LIU Yuming,et al.Application of multiple-point geostatistics in 3D internal architecture modeling of point bar[J].Oil & Gas Geology,2016,37(4):578-582.
[15] 吴胜和.储层表征与建模[M].北京:石油工业出版社,2010.
[16] 李少华,张昌民,尹艳树.河流相储层随机建模的几种方法[J].西安石油学院学报(自然科学版),2003,18(5):10-16.LI Shaohua,ZHANG Changmin,YIN Yanshu.Several methods for stochastic modeling of fluvial facies reservoirs.[J].Journal of Xi'an Petroleum Institute (Natural Science Edition),2003,18(5):10-16.