苏里格气田苏53区块南部地区有效砂体预测
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摘要
鄂尔多斯盆地苏里格气田苏53区块勘探开发的主力层位为下二叠统石盒子组8段和下二叠统山西组1段,为确定该区块总体低渗透背景下相对高渗透储集砂体的分布规律、优选出天然气相对富集区,在综合利用气藏勘探、开发过程中获得的地震、地质、测井、钻井以及开发动态资料的基础上,应用相控条件随机模拟方法建立了定量的储层地质模型(包括单砂体模型和物性参数模型,其中物性参数模型又包括孔隙度模型、渗透率模型和含气饱和度模型),对该区块南部地区大面积低渗透、低丰度背景下有效储集砂体的展布规律及井间储层参数进行了预测。结果表明:①该区块有效储层主要分布在中南部和西部,以低孔隙度、低渗透率储层为主,其分布受沉积相控制明显,以河道砂为主的有效储层孔隙度明显高于其他岩性储层;②相对高孔隙度、高渗透率储层在侧向上和纵向均被相对低孔隙度、低渗透率储层所分隔,孔隙度、渗透率井间差异较大。
The major targets of Block Su-53 in the Sulige Gas Field,Ordos Basin,are the 8th member of the Lower Permian Shihezi Fm and the 1st member of the Lower Permian Shanxi Fm.In order to understand the distribution patterns of the sandstone reservoirs with relatively high permeability in an overall low permeability setting of Block Su-53 in this gas field and predict target areas with relatively high gas potential,we made an integrated analysis of various available data,including seismic,geologic,logging,drilling and well performance data obtained during gas exploration and development.On this basis,the facies-controlled conditional stochastic simulation method was used to build quantitative reservoir geologic models such as single sandbody models and physical property parameter models,the latter of which include the porosity model,permeability model and gas saturation model.These models were run to predict the distribution patterns of effective sandstone reservoirs and the inter-well reservoir parameters in the southern Block Su-53 with overall low permeability and low reserve abundance.The following conclusions were obtained.(1)The effective reservoirs in the study area are mainly distributed in the south-central and western parts of the block and are mostly of low porosity and low permeability reservoirs.Their distribution is significantly controlled by sedimentary facies.The effective reservoirs predominantly of channel sands have remarkably higher porosity than the other reservoirs of different lithologies.(2)The reservoirs with relatively high porosity and permeability are separated both laterally and vertically by reservoirs with relatively low porosity and permeability,resulting in large interwell variations of porosity and permeability.
The major targets of Block Su-53 in the Sulige Gas Field,Ordos Basin,are the 8th member of the Lower Permian Shihezi Fm and the 1st member of the Lower Permian Shanxi Fm.In order to understand the distribution patterns of the sandstone reservoirs with relatively high permeability in an overall low permeability setting of Block Su-53 in this gas field and predict target areas with relatively high gas potential,we made an integrated analysis of various available data,including seismic,geologic,logging,drilling and well performance data obtained during gas exploration and development.On this basis,the facies-controlled conditional stochastic simulation method was used to build quantitative reservoir geologic models such as single sandbody models and physical property parameter models,the latter of which include the porosity model,permeability model and gas saturation model.These models were run to predict the distribution patterns of effective sandstone reservoirs and the inter-well reservoir parameters in the southern Block Su-53 with overall low permeability and low reserve abundance.The following conclusions were obtained.(1)The effective reservoirs in the study area are mainly distributed in the south-central and western parts of the block and are mostly of low porosity and low permeability reservoirs.Their distribution is significantly controlled by sedimentary facies.The effective reservoirs predominantly of channel sands have remarkably higher porosity than the other reservoirs of different lithologies.(2)The reservoirs with relatively high porosity and permeability are separated both laterally and vertically by reservoirs with relatively low porosity and permeability,resulting in large interwell variations of porosity and permeability.
引文
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[13]刘彦锋,尹志军,李进步,等.多点地质统计学在苏49-01井区沉积微相建模中的应用[J].中国石油勘探,2012,17(4):41-46.LIU Yanfeng,YIN Zhijun,LI Jinbu,et al.Application of multiple-point geostatistics in sedimentary microfacies modeling in SU49-01area of Sulige Gas Field[J].China Petroleum Exploration,2012,17(4):41-46.
[14]贾爱林,唐俊伟,何东博,等.苏里格气田强非均质致密砂岩储层的地质建模[J].中国石油勘探,2007(1):12-16.JIA Ailin,TANG Junwei,HE Dongbo,et al.Geological modeling for sandstone reservoirs with low permeability and strong heterogeneity in Sulige Gas Field[J].China Petroleum Exploration,2007(1):12-16.
[15]何刚,尹志军,唐乐平,等.鄂尔多斯盆地苏6加密试验区块盒8段储层地质建模研究[J].天然气地球科学,2010,21 (2):251-256.HE Gang,YIN Zhijun,TANG Leping,et al.The reservoir geological model study of He 8Member,Su 6infilling well experimental area,Ordos Basin[J].Natural Gas Geoscience,2010,21(2):251-256.
[16]吴胜和,张一伟,李恕军,等.提高储层随机建模精度的地质约束原则[J].石油大学学报:自然科学版,2001,25(1):55 -58.WU Shenghe,ZHANG Yiwei,LI Shujun,et al.Geological constraint principles in reservoir stochastic modeling[J].Journal of the University of Petroleum,China:Edition of Natural Science,2001,25(1):55-58.
[17]于兴河,陈建阳,张志杰,等.油气储层相控随机建模技术的约束方法[J].地学前缘,2005,12(3):237-243.YU Xinghe,CHEN Jianyang,ZHANG Zhijie,et al.Stochastic modeling for characteristics of petroleum reservoir constrained by facies[J].Earth Science Frontiers,2005,12(3):237-243.
[18]张丽娟,马青,范秋海,等.塔里木盆地哈6区块奥陶系碳酸盐岩古岩溶储层特征识别及地质建模[J].中国石油勘探,2012,17(2):1-7.ZHANG Lijuan,MA Qing,FAN Qiuhai,et al.Paleokarst reservoir recognition and geology modeling of Ordovician carbonate of block Ha 6in Tarim Basin[J].China Petroleum Exploration,2012,17(2):1-7.
[2]王仲林,徐守余.河流相储集层定量建模研究[J].石油勘探与开发,2003,30(1):27-29.WANG Zhonglin,XU Shouyu.Quantitative modeling in fluvial facies reservoir[J].Petroleum Exploration and Development,2003,30(1):27-29.
[3]赵勇,李进步,张吉,等.低渗透河流相储层建模方法与应用——以苏里格气田苏6加密试验区块为例[J].天然气工业,2010,30(7):32-35.ZHAO Yong,LI Jinbu,ZHANG Ji,et al.Methodology for geologic modeling of low-permeability fluvial sandstone reservoirs and its application:A case study of the Su-6infilling drilling pilot in the Sulige Gas Field[J].Natural Gas Industry,2010,30(7):32-35.
[4]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,2008,15(4):33-41.YU Xinghe,Li Shengli,ZHAO Shu,et al.The constraining method on stochastic modeling for fluvial petroleum reservoir controlled by depositional facies integrating wells with seismic data[J].Earth Science Frontiers,2008,15(4):33-41.
[5]程超,吴东昊,桑琴,等.基于蚂蚁体的“相”控地质建模[J].西安石油大学学报:自然科学版,2011,26(3):21-25.CHENG Chao,WU Donghao,SANG Qin,et al.Faciescontrolled geological modeling based on ant bodies[J].Journal of Xi'an Shiyou University:Natural Science Edition,2011,26(3):21-25.
[6]刘蕊,盛海波,蔡玥,等.塔河油气田AT1区块凝析气藏三维地质建模研究[J].地球科学与环境学报,2011,33(2):168 -171.LIU Rui,SHENG Haibo,CAI Yue,et al.Study on threedimensional geologic modeling of condensate gas reservoir in block AT1of Tahe Oilfield[J].Journal of Earth Sciences and Environment,2011,33(2):168-171.
[7]周祺,郑荣才,王华,等.长北气田辫状河三角洲单砂体时空建模[J].大庆石油地质与开发,2008,27(5):10-13.ZHOU Qi,ZHENG Rongcai,WANG Hua,et al.Timespace simulation on braid river delta single sand-body of Changbei Gasfield[J].Petroleum Geology&Oilfield Development in Daqing,2008,27(5):10-13.
[8]彭仕宓,索重辉,王晓杰,等.整合多尺度信息的裂缝性储层建模方法探讨[J].西安石油大学学报:自然科学版,2011,26(4):1-7.PENG Shimi,SUO Chonghui,WANG Xiaojie,et al.A modeling method for fractured reservoirs using multi-scale information[J].Journal of Xi'an Shiyou University:Natural Science Edition,2011,26(4):1-7.
[9]姜贻伟,刘红磊,杨福涛,等.震控储层建模方法及其在普光气田的应用[J].天然气工业,2011,31(3):14-17.JIANG Yiwei,LIU Honglei,YANG Futao,et al.Seismicconstrained reservoir modeling and its application in the Puguang Gas Field[J].Natural Gas Industry,2011,31(3),14-17.
[10]陈启文,董瑜,王飞,等.苏里格气田水平井开发技术优化[J].天然气工业,2012,32(6):39-42.CHEN Qiwen,DONG Yu,WANG Fei,et al.Optimization of horizontal well development technology in the Sulige Gas Field[J].Natural Gas Industry,2012,32(6):39-42.
[11]王家华,赵巍.基于地震约束的地质统计学建模方法研究[J].海洋石油,2010,30(4):46-49.WANG Jiahua,ZHAO wei.Research on geostatistical modeling method constrained by seismic data[J].Offshore Oil,2010,30(4):46-49.
[12]杨揩,艾迪飞,耿建华.测井、井间地震与地面地震数据联合约束下的地质统计学随机建模方法研究[J].地球物理学报,2012,55(8):2695-2704.YANG Kai,AI Difei,GENG Jianhua.A new geostatistical inversion and reservoir modeling technique constrained by well-log,crosshole and surface seismic data[J].Chinese Journal of Geophysics,2012,55(8):2695-2704.
[13]刘彦锋,尹志军,李进步,等.多点地质统计学在苏49-01井区沉积微相建模中的应用[J].中国石油勘探,2012,17(4):41-46.LIU Yanfeng,YIN Zhijun,LI Jinbu,et al.Application of multiple-point geostatistics in sedimentary microfacies modeling in SU49-01area of Sulige Gas Field[J].China Petroleum Exploration,2012,17(4):41-46.
[14]贾爱林,唐俊伟,何东博,等.苏里格气田强非均质致密砂岩储层的地质建模[J].中国石油勘探,2007(1):12-16.JIA Ailin,TANG Junwei,HE Dongbo,et al.Geological modeling for sandstone reservoirs with low permeability and strong heterogeneity in Sulige Gas Field[J].China Petroleum Exploration,2007(1):12-16.
[15]何刚,尹志军,唐乐平,等.鄂尔多斯盆地苏6加密试验区块盒8段储层地质建模研究[J].天然气地球科学,2010,21 (2):251-256.HE Gang,YIN Zhijun,TANG Leping,et al.The reservoir geological model study of He 8Member,Su 6infilling well experimental area,Ordos Basin[J].Natural Gas Geoscience,2010,21(2):251-256.
[16]吴胜和,张一伟,李恕军,等.提高储层随机建模精度的地质约束原则[J].石油大学学报:自然科学版,2001,25(1):55 -58.WU Shenghe,ZHANG Yiwei,LI Shujun,et al.Geological constraint principles in reservoir stochastic modeling[J].Journal of the University of Petroleum,China:Edition of Natural Science,2001,25(1):55-58.
[17]于兴河,陈建阳,张志杰,等.油气储层相控随机建模技术的约束方法[J].地学前缘,2005,12(3):237-243.YU Xinghe,CHEN Jianyang,ZHANG Zhijie,et al.Stochastic modeling for characteristics of petroleum reservoir constrained by facies[J].Earth Science Frontiers,2005,12(3):237-243.
[18]张丽娟,马青,范秋海,等.塔里木盆地哈6区块奥陶系碳酸盐岩古岩溶储层特征识别及地质建模[J].中国石油勘探,2012,17(2):1-7.ZHANG Lijuan,MA Qing,FAN Qiuhai,et al.Paleokarst reservoir recognition and geology modeling of Ordovician carbonate of block Ha 6in Tarim Basin[J].China Petroleum Exploration,2012,17(2):1-7.
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