渤海油田河流相油气藏关键储量参数确定方法
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摘要
含油气面积和有效厚度是渤海油田河流相油气藏储量计算的关键参数,利用海上油田高品质地震资料,应用测井约束反演技术开展砂体,尤其是含油气砂体的空间展布研究,砂体分布范围及厚度的预测准确率在80%以上,准确把握了砂体的含油气范围及油气层厚度;采用油田丰富的压力资料,预测河流相油气藏的流体界面,在压力资料品质及储层条件较好的情况下,预测的流体界面十分接近实测的流体界面,有效提高了储量计算过程中含油气面积圈定的准确性;充分利用壁心、测压资料开展有效厚度下限研究,采用自然电位异常幅度相对值与微侧向电阻率相对值的比值(ΔSP/ΔRxo)来识别低阻油层,经测试及生产资料证实,识别低阻油层的准确率达100%,确保了储量计算过程中有效厚度确定的准确性。
Oil/gas-bearing area and net pay thickness are the two key parameters for reserve calculation of fluvial sandstone reservoirs in Bohai oilfield.Quality seismic data and log-constrained seismic inversion technology were used to predict the area and thickness of oil/gas-bearing sandbodies with accuracy over 80%.The abundant formation pressure data available were used to predict oil/gas-water contacts.The prediction results coincide well with the measured data,effectively enhance the accuracy of oil/gas-bearing area for reserve calculation.Sidewall core data and formation pressure data were used to determine the lower limit of net pay thickness.The ΔSP/ΔRxo was used to identify low resistivity oil layers and the accuracy is up to 100%.
Oil/gas-bearing area and net pay thickness are the two key parameters for reserve calculation of fluvial sandstone reservoirs in Bohai oilfield.Quality seismic data and log-constrained seismic inversion technology were used to predict the area and thickness of oil/gas-bearing sandbodies with accuracy over 80%.The abundant formation pressure data available were used to predict oil/gas-water contacts.The prediction results coincide well with the measured data,effectively enhance the accuracy of oil/gas-bearing area for reserve calculation.Sidewall core data and formation pressure data were used to determine the lower limit of net pay thickness.The ΔSP/ΔRxo was used to identify low resistivity oil layers and the accuracy is up to 100%.
引文
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[16]赵春明,王少鹏,刘维永,等.FMT压力分析在渤海J25-1油田储量评价中的应用[J].断块油气田,2009,16(6):85-87.Zhao Chunming,Wang Shaopeng,Liu Weiyong,et al.Applica-tion of FMT pressure analysis in reserves estimate of BohaiJ25-1 Oilfield[J].Fault-Block Oil&Gas Field,2009,16(6):85-87.
[17]徐锦绣,吕洪志,崔云江.渤海地区电缆地层测试应用效果分析[J].中国海上油气,2008,20(2):106-110.Xu Jinxiu,Lv Hongzhi,Cui Yunjiang.An application analysis ofwireline formation test in Bohai region[J].China Offshore Oiland Gas,2008,20(2):106-110.
[18]孙风涛,田晓平,张越.压力资料预测油水界面精度分析[J].石油地质与工程,2010,20(2):106-110.Sun Fengtao,Tian Xiaoping,Zhang Yue.Accuracy analysis ofusing pressure data to predict oil-water contact[J].PetroleumGeology and Engineering,2010,20(2):106-110.
[19]盛湘,何发岐,云露.塔河地区卡拉沙依组小层划分、连通性及油藏类型[J].石油与天然气地质,2009,30(2):143-148.Sheng Xiang,He Faqi,Yun Lu.Subzone division,connectivi-ty and pool types of the Carboniferous Kalashayi Formation inthe Tahe area[J].Oil&Gas Geology,2009,30(2):143-148.
[20]柳锦云.低渗透油藏有效厚度下限标准研究[J].海洋石油,2008,28(3):70-73.Liu Jinyun.Research on the minimum net pay thickness in lowpermeability reservoirs[J].Offshore Oil,2008,28(3):70-73.
[21]焦翠华,夏冬冬,王军,等.特低渗砂岩储层物性下限确定方法——以永进油田西山窑组储集层为例[J].石油与天然气地质,2009,30(3):379-383.Jiao Cuihua,Xia Dongdong,Wang Jun,et al.Methods for deter-mining the petrophysical property cutoffs of extra-low porosityand permeability sandstone reservoirs—an example from theXishanyao Formation reservoirs in Yongjin oilfield[J].Oil&Gas Geology,2009,30(3):379-383.
[2]刘小平,周心怀,吕修祥,等.海域油气分布特征及主控因素[J].石油与天然气地质,2009,30(4):497-509.Liu Xiaoping,Zhou Xinhuai,Lv Xiuxiang,et al.Hydrocarbondistribution features and main controlling factors in the BohaiSea waters[J].Oil&Gas Geology,2009,30(4):497-509.
[3]DZ/T0217—2005,石油天然气储量计算规范[S].北京:中国标准出版社,2005.Petroleum and natural gas reserves standards.Beijing:ChinaStandards Press,DZ/T0217-2005.2005.
[4]关涛,唐伟,李淑.柳南地区石油地质储量计算的概率分析[J].石油与天然气地质,2000,21(4):327-329.Guan Tao,Tang Wei,Li Shuxun.Probabilistic analysis of geo-logical reserves calculation in petroleum from Liunan region[J].Oil&Gas Geology,2000,21(4):327-329.
[5]萧德铭,毕海滨.利用油基泥浆取心资料确定砂岩油藏原始含油饱和度若干问题探讨[J].中国海上油气,2003,17(4):252-255.Xiao Deming,Bi Haibin.Determining the oil saturation of sand-stone reservoir using oil-base core data[J].China Offshore Oiland Gas,2003,17(4):252-255.
[6]翟中喜,白振瑞.渤海湾盆地石油储量增长规律及潜力分析[J].石油与天然气地质,2008,29(1):88-94.Zhai Zhongxi,Bai Zhenrui.Pattern and potential of petroleumreserves growth in the Bohai Bay Basin[J].Oil&Gas Geolo-gy,2008,29(1):88-94.
[7]刘波,赵翰卿,王良书,等.古河流废弃河道微相的精细描述[J].沉积学报,2001,19(3):394-398.Liu Bo,Zhao Hanqing,Wang Liangshu,et al.The detailed de-scription of ancient fluvial abandoned channel microfacies[J].Acta Sedimentologica Sinica,2001,19(3):394-398.
[8]杨通佑,范尚炯,陈元千,等.石油及天然气储量计算方法[M].北京:石油工业出版,1990:1-50.Yang Tongyou,Fan Shangjiong,Chen Yuanqian,et al.Reservecalculation of oil and gas[M].Beijing:Petroleum IndustryPress,1990:1-50.
[9]赵文智,毕海滨.储量研究中油藏边界的确定方法[J].中国海上油气,2005,17(6):379-383.Zhao Wenzhi,Bi Haibin.The methods to determine reservoirboundary for reserves researches[J].China Offshore Oil andGas,2005,17(6):379-383.
[10]王宏亮.红柳油田河流相砂体储层预测技术[J].内江科技,2008,29(4):109.Wang Hongliang,Reservoir prediction methods for fluvial sandbodies in Liuhe oilfield[J].Neijiang Science&Technology,2008,29(4):109.
[11]单敬福,王峰,孙海雷,等.基于地震波阻抗反演的小层砂体预测技术——在大庆油田州57水平井区块的应用[J].石油与天然气地质,2010,31(2):212-215.Shan Jinfu,Wang Feng,Sun Hailei,et al.Prediction of sublay-er sandstones based on wave impedance-inversion in the well-block of the horizontal well Zhou-57[J].Oil&Gas Geology,2010,31(2):212-215.
[12]许辉群,桂志先.利用测井约束地震反演预测砂体展布——以YX地区砂四段三砂组砂体为例[J].天然气地球科学,2006,17(4):547-551.Xu Huiqun,Gui Zhixian.Application of Jason inversion to pre-diction of sandstone[J].Natural Gas Geoscience,2006,17(4):547-551.
[13]崔永谦,秦凤启,卢永和,等.河流相沉积储层地震精细预测方法研究与应用——以渤海湾盆地冀中坳陷古近系河道砂为例[J].石油与天然气地质,2009,30(5):668-672.Cui Yongqian,Qin Fengqi,Lu Yonghe,et al.Research and ap-plication of detailed seismic prediction in fluvial reservoirs—anexample from the palaeogene channel sand in the Jizhong De-pression,the Bohai Bay Basin[J].Oil&Gas Geology,2009,30(5):668-672.
[14]朱伟,马朋善,谭承军,等.渤东凹陷蓬二号构造地震资料测井约束反演[J].石油与天然气地质,2005,26(1):120-124.Zhu Wei,Ma Pengshan,Tan Chengjun,et al.Logging constrain-ed inversion of seismic data in Peng No.2 structure in Bodongsag[J].Oil&Gas Geology,2005,26(1):120-124.
[15]刘德华,刘志森.油藏工程基础[M].北京:石油工业出版社,2007,21-23.Liu Dehua,Liu Zhisen.Basis of reservoir engineering[M].Bei-jing:Petroleum Industry Press,2007,21-23.
[16]赵春明,王少鹏,刘维永,等.FMT压力分析在渤海J25-1油田储量评价中的应用[J].断块油气田,2009,16(6):85-87.Zhao Chunming,Wang Shaopeng,Liu Weiyong,et al.Applica-tion of FMT pressure analysis in reserves estimate of BohaiJ25-1 Oilfield[J].Fault-Block Oil&Gas Field,2009,16(6):85-87.
[17]徐锦绣,吕洪志,崔云江.渤海地区电缆地层测试应用效果分析[J].中国海上油气,2008,20(2):106-110.Xu Jinxiu,Lv Hongzhi,Cui Yunjiang.An application analysis ofwireline formation test in Bohai region[J].China Offshore Oiland Gas,2008,20(2):106-110.
[18]孙风涛,田晓平,张越.压力资料预测油水界面精度分析[J].石油地质与工程,2010,20(2):106-110.Sun Fengtao,Tian Xiaoping,Zhang Yue.Accuracy analysis ofusing pressure data to predict oil-water contact[J].PetroleumGeology and Engineering,2010,20(2):106-110.
[19]盛湘,何发岐,云露.塔河地区卡拉沙依组小层划分、连通性及油藏类型[J].石油与天然气地质,2009,30(2):143-148.Sheng Xiang,He Faqi,Yun Lu.Subzone division,connectivi-ty and pool types of the Carboniferous Kalashayi Formation inthe Tahe area[J].Oil&Gas Geology,2009,30(2):143-148.
[20]柳锦云.低渗透油藏有效厚度下限标准研究[J].海洋石油,2008,28(3):70-73.Liu Jinyun.Research on the minimum net pay thickness in lowpermeability reservoirs[J].Offshore Oil,2008,28(3):70-73.
[21]焦翠华,夏冬冬,王军,等.特低渗砂岩储层物性下限确定方法——以永进油田西山窑组储集层为例[J].石油与天然气地质,2009,30(3):379-383.Jiao Cuihua,Xia Dongdong,Wang Jun,et al.Methods for deter-mining the petrophysical property cutoffs of extra-low porosityand permeability sandstone reservoirs—an example from theXishanyao Formation reservoirs in Yongjin oilfield[J].Oil&Gas Geology,2009,30(3):379-383.
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