委内瑞拉奥里诺科重油带淡水冲刷超重油储层饱和度评价
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摘要
基于委内瑞拉奥里诺科重油带地质资料、岩石物理实验资料,在综合分析地层水成因的基础上,发现研究区存在2种不同矿化度的地层水,即高矿化度束缚水(原生水)和低矿化度混合水(次生水),地层水矿化度受束缚水和混合水矿化度、体积比共同影响。针对研究区地层水矿化度变化规律的复杂性,应用改进的双水模型计算饱和度,通过与传统固定地层水电阻率的阿尔奇模型对比,改进的双水模型计算结果与实验室岩心分析结果吻合更好,且计算结果明显优于传统模型,验证了该方法的准确性与适用性。应用该方法对研究区48口井进行了精细解释,并制作了油藏横剖面对比图,明确了研究区冲刷带的纵向分布规律,对研究区超重油储层射孔方案优化以及开发方案的制定具有重要指导意义。
Based on the geological data and petrophysical experiment of the Orinoco heavy oil zone in Venezuela as well as a comprehensive analysis of the formation water it was found that there were two types of formation water with different salinities in research area:the high salinity bound water(connate water) and the low salinity mixed water(secondary water). The salinity of formation water was influenced by the combination of bound water mixed water salinity and volume ratio. Considered the complexity of formation water salinity in the study area the improved dual-water model was used to calculate the water saturation. Compared with traditional Archie's model the calculated results of the dual-water model were in good agreement with the results of the laboratory core analysis and significantly better than the result of traditional model which verified the accuracy and applicability of the improved method. This method has been used to finely interpret 48 wells in the study area and a reservoir cross-sectional comparison chart was made. Based on the result the vertical distribution of the scouring zone in the study area was clarified which has important significance for the optimization of the perforation and the formulation of development plan for the heavy oil reservoir in the study area.
Based on the geological data and petrophysical experiment of the Orinoco heavy oil zone in Venezuela as well as a comprehensive analysis of the formation water it was found that there were two types of formation water with different salinities in research area:the high salinity bound water(connate water) and the low salinity mixed water(secondary water). The salinity of formation water was influenced by the combination of bound water mixed water salinity and volume ratio. Considered the complexity of formation water salinity in the study area the improved dual-water model was used to calculate the water saturation. Compared with traditional Archie's model the calculated results of the dual-water model were in good agreement with the results of the laboratory core analysis and significantly better than the result of traditional model which verified the accuracy and applicability of the improved method. This method has been used to finely interpret 48 wells in the study area and a reservoir cross-sectional comparison chart was made. Based on the result the vertical distribution of the scouring zone in the study area was clarified which has important significance for the optimization of the perforation and the formulation of development plan for the heavy oil reservoir in the study area.
引文
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[13] 宋传真,刘传喜,徐婷,等.低渗孔隙型碳酸盐岩稠油油藏开发对策:以叙利亚O油田为例 [J].石油与天然气地质,2015,36(2):297-305.
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[15] 张枝焕,刘洪军,李伟,等.准噶尔盆地车排子地区稠油成因及成藏过程 [J].地球科学与环境学报,2014,36(2):18-32.
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[18] 程晓波,孙金浩,牟牮,等.辽河油田超稠油储层精细测井评价 [J].测井技术,2015,39(6):715-719.
[19] 陈明江,黄婷婷,颜其彬,等.伊拉克Ahdeb油田稠油层测井识别及分布特征研究新方法 [J].测井技术,2017,41(2):156-164.
[20] 谢伟彪,殷秋丽,刘迪仁,等.基于多矿物分析的砂砾岩稠油储层测井评价 [J].岩性油气藏,2013,25(3):102-105.
[21] 赵伟.齐40块稠油水淹层的测井评价方法研究 [D].大庆:东北石油大学,2016.
[22] 王良琼,张胜文,李能根.超稠油层的测井解释方法 [J].特种油气藏,1994,1(1):1-7.
[23] 闫建平.精细油藏描述中稠油储层的测井资料综合评价方法研究 [D].北京:中国石油大学,2007.
[24] 祝永军,康志勇,李素杰,等.曙一区超稠油油藏综合评价研究 [J].特种油气藏,2001,8(2):25-30.
[25] 张松扬,陈玉魁.“新双水”法在松南地区BW气田测井解释中的应用 [J].测井技术,1998,22(增刊1):50-55.
[26] ARCHIE G E.The electrical resistivity log as an aid in determining characteristics [C]//Trans AIME,1942,146:54-62.
*非法定计量单位,1 mD=9.87×10-4 μm2,下同
[2] 侯君,戴国汗,危杰,等.委内瑞拉奥里诺科重油带油藏特征及开发潜力 [J].石油实验地质,2014,36(6):725-730.
[3] 陈浩,陈和平,黄文松,等.委内瑞拉奥里诺科重油带Carabobo油区M区块Morichal段地层沉积演化特征 [J].西安石油大学学报(自然科学版),2016,31(1):45-52.
[4] 王丽,谭伟,何胜林,等.基于并联导电模型的水淹层剩余油饱和度评价方法 [J].大庆石油地质与开发,2016,35(2):134-139.
[5] FABBRI C,IMEOKPARIA O,ODENIYI A,et al.Coupled use of saturation logging and water-flow log in a stratified deltaic reservoir leading to successful additional perforation [C]//Nigeria Annual International Conference and Exhibition.Society of Petroleum Engineers,2017.
[6] MARCOS J,MOYA Y,VEGA C.Heavy oil petrophysical evaluation using new log technology and modified water saturation model [C]//Heavy oil congress,Aberdeen,Scotland,2012:WHOC12-251.
[7] MAINI B B.Is it futile to measure relative permeability for heavy oil reservoirs?[J].Journal of Canadian Petroleum Technology,1995,37(4):56-62.
[8] BERG E A,BJORLYKKE O P.Heavy oil and relative permeability in laboratory,simulations and production;Is there a link?[C]//SPE International Heavy Oil Conference and Exhibition.Mangaf,Kuwait:SPE,2014.
[9] WANG S L,LI A F,PENG R G,et al.Effect of oil water viscosity ratio on heavy oil-water relative permeability curve [J].Science Technology & Engineering,2017.
[10] 刘亚明.重油研究现状及展望 [J].中国石油勘探,2010,15(5):69-76.
[11] DENNEY D.Heavy-oil production in venezuela [J].Journal of Petroleum Technology,1999,51(9):110-114.
[12] THOMAS S,SCOULAR J R,VERKOCZY B,et al.Chemical methods for heavy oil recovery [J].Journal of Canadian Petroleum Technology,2001,40(3):56-61.
[13] 宋传真,刘传喜,徐婷,等.低渗孔隙型碳酸盐岩稠油油藏开发对策:以叙利亚O油田为例 [J].石油与天然气地质,2015,36(2):297-305.
[14] 张兆祥,刘慧卿,杨阳,等.稠油油藏蒸汽驱评价新方法 [J].石油学报,2014,35(4):733-738.
[15] 张枝焕,刘洪军,李伟,等.准噶尔盆地车排子地区稠油成因及成藏过程 [J].地球科学与环境学报,2014,36(2):18-32.
[16] 刘亚明,谢寅符,马中振,等.Orinoco重油带重油成藏特征 [J].石油与天然气地质,2013,34(3):315-322.
[17] 邵维志,丁娱娇,王庆梅,等.用核磁共振测井定量评价稠油储层的方法 [J].测井技术,2006,30(1):67-71.
[18] 程晓波,孙金浩,牟牮,等.辽河油田超稠油储层精细测井评价 [J].测井技术,2015,39(6):715-719.
[19] 陈明江,黄婷婷,颜其彬,等.伊拉克Ahdeb油田稠油层测井识别及分布特征研究新方法 [J].测井技术,2017,41(2):156-164.
[20] 谢伟彪,殷秋丽,刘迪仁,等.基于多矿物分析的砂砾岩稠油储层测井评价 [J].岩性油气藏,2013,25(3):102-105.
[21] 赵伟.齐40块稠油水淹层的测井评价方法研究 [D].大庆:东北石油大学,2016.
[22] 王良琼,张胜文,李能根.超稠油层的测井解释方法 [J].特种油气藏,1994,1(1):1-7.
[23] 闫建平.精细油藏描述中稠油储层的测井资料综合评价方法研究 [D].北京:中国石油大学,2007.
[24] 祝永军,康志勇,李素杰,等.曙一区超稠油油藏综合评价研究 [J].特种油气藏,2001,8(2):25-30.
[25] 张松扬,陈玉魁.“新双水”法在松南地区BW气田测井解释中的应用 [J].测井技术,1998,22(增刊1):50-55.
[26] ARCHIE G E.The electrical resistivity log as an aid in determining characteristics [C]//Trans AIME,1942,146:54-62.
*非法定计量单位,1 mD=9.87×10-4 μm2,下同