高北斜坡中深层岩性油藏岩石电阻率实验研究
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摘要
冀东油田南堡凹陷高北斜坡中深层岩性油藏电阻率测井响应复杂,给含油性评价带来了很大挑战。为了弄清岩石电阻率的变化规律,选取研究区不同类型的典型岩心,模拟不同地层水矿化度条件下的油驱水过程,进行配套的岩石电阻率实验测量。结果表明:胶结指数随地层水矿化度、孔隙度和储层品质因子的增大而增大,随阳离子交换量的增大而减小;饱和度指数随地层水矿化度和阳离子交换量的增大而增大,随孔隙度和储层品质因子的增大而减小。根据实验结果建立了动态岩电参数含水饱和度模型,依据该模型计算的结果与验证实验结果吻合很好,表明模型的可靠性高。
In order to understand the variation of the rock resistivity of the middle deep lithologic reservoirs in Gaobei slope of Nanbu sag,Jindong Oilfield,selecting typical cores of different types as research objects,their rock resistivity was measured by simulating the displacement of water with oil under different formation water salinity. The experimental results show that the cementation index increases with the increase of formation water salinity,reservoir porosity and reservoir quality factor,and it decreases withthe increase of cation exchange capacity. The saturation index increases with the increase of formation water salinity and cation exchange capacity,and decreases with the increase of reservoir porosity and reservoir quality factor. A model for calculating the water saturation was established based on a large number of experimental data. The calculated results of the water saturation with the model are in good agreement with experimental results,which shows the model is of high reliability.
In order to understand the variation of the rock resistivity of the middle deep lithologic reservoirs in Gaobei slope of Nanbu sag,Jindong Oilfield,selecting typical cores of different types as research objects,their rock resistivity was measured by simulating the displacement of water with oil under different formation water salinity. The experimental results show that the cementation index increases with the increase of formation water salinity,reservoir porosity and reservoir quality factor,and it decreases withthe increase of cation exchange capacity. The saturation index increases with the increase of formation water salinity and cation exchange capacity,and decreases with the increase of reservoir porosity and reservoir quality factor. A model for calculating the water saturation was established based on a large number of experimental data. The calculated results of the water saturation with the model are in good agreement with experimental results,which shows the model is of high reliability.
引文
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[14]居字龙,唐辉,刘伟新,等.珠江口盆地高束缚水饱和度成因低阻油层地质控制因素及分布规律差异[J].中国海上油气,2016,28(1):60-68.JU Zilong,TANG Hui,LIU Weixin,et al.Geological control factors and distribution law of low resistivity reservoir in the Pearl River Mouth Basin with high irreducible water saturation[J].Offshore Oil and Gas in China,2016,28(1):60-68.
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[2]宋延杰,姜艳娇,宋杨,等.古龙南地区低阻油层胶结指数和饱和度指数影响因素实验[J].吉林大学学报(地球科学版),2014,44(2):704-714.SONG Yanjie,JIANG Yanjiao,SONG Yang,et al.Experiment on influence factors of cementation index and saturation index of low resistivity zone of Gulong south area[J].Journal of Jilin University,Earth Science Edition,2014,44(2):704-714.
[3]中国石油勘探与生产分公司.低阻油气藏测井评价技术及应用[M].北京:石油工业出版社,2009.
[4]张明禄,石玉江.复杂孔隙结构砂岩储层岩电参数研究[J].石油物探,2005,44(1):21-23.ZHANG Minglu,SHI Yujiang.Study on rock electrical parameters of sandstone reservoir with complex pore structure[J].Geophysical Prospecting for Petroleum,2005,44(1):21-23.
[5]沈爱新,王黎,陈守军.油层低电阻率及阿尔奇公式中各参数的岩电实验研究[J].石油天然气学报,2003,25(s1):24-25.SHEN Aixin,WANG Li,CHEN Shoujun.Experimental study on rock electricity of Low resistivity of reservoir and parameters in Archie formula[J].Journal of Petroleum and Natural Gas,2003,25(s1):24-25.
[6]冯程,毛志强,殷文,等.低渗透复杂润湿性储层电阻率实验及导电机理研究[J].地球物理学报,2017,60(3):1211-1220.FENG Cheng,MAO Zhiqiang,YIN Wen,et al.Resistivity experiment and conductive mechanism research of low permeability complex wettability reservoir[J].Chinese Journal of Geophysics,2017,60(3):1211-1220.
[7]刘海青,许廷生,李艳梅,等.南堡凹陷中深层岩性油气藏形成及分布[J].特种油气藏,2014,21(5):34-36.LIU Haiqing,XU Yansheng,LI Yanmei,et al.Formation and distribution of lithologic oil and gas reservoirs in middle deep layer of Nanpu sag[J].Special Oil and Gas Reservoirs,2014,21(5):34-36.
[8]张程恩,潘保芝,刘倩茹.储层品质因子RQI结合聚类算法进行储层分类评价研究[J].国外测井技术,2012(4):11-13.ZHANG Chengen,PAN Baozhi,LIU Qianru.Reservoir quality factor RQI combined with clustering algorithm for reservoir classification and evaluation[J].Foreign Logging Technology,2012(4):11-13.
[9]程相志,周凤鸣,彭银辉,等.W-S模型在泥质砂岩储层含油性评价中的应用[J].石油与天然气地质,2000,21(4):313-317.CHENG Xiangzhi,ZHOU Fengming,PENG Yinhui,et al.Application of W-S model in oil-bearing evaluation of shaly sand reservoir[J].Geology of Petroleum and Natural Gas,2000,21(4):313-317.
[10]陈瑞君.我国某些地区的海绿石特征及其对相环境分析的意义[J].地质科学,1980,12(1):65-74.CHEN Ruijun.The characteristics of Glauconite in some areas of our country and its significance in analyzing the facies environment[J].Geological Science,1980,12(1):65-74.
[11]耿燕飞,张春生,韩校锋,等.安岳—合川地区低阻气层形成机理研究[J].岩性油气藏,2011,23(3):70-74.GENG Yanfei,ZHANG Chunsheng,HAN Xiaofeng,et al.Formation mechanism of low resistivity gas reservoirs in Anyue Hechuan area[J].Lithologic Hydrocarbon Reservoir,2011,23(3):70-74.
[12]王博,赵军,王淼,等.断块低阻油层测井识别与评价[J].岩性油气藏,2012,24(6):110-114.WANG Bo,ZHAO Jun,WANG Miao,et al.Logging identification and evaluation of fault block low resistivity reservoir[J].Lithologic Reservoirs,2012,24(6):110-114.
[13]雍世和,张超谟.测井数据处理与综合解释[M].东营:石油大学出版社,1996:112-124.
[14]居字龙,唐辉,刘伟新,等.珠江口盆地高束缚水饱和度成因低阻油层地质控制因素及分布规律差异[J].中国海上油气,2016,28(1):60-68.JU Zilong,TANG Hui,LIU Weixin,et al.Geological control factors and distribution law of low resistivity reservoir in the Pearl River Mouth Basin with high irreducible water saturation[J].Offshore Oil and Gas in China,2016,28(1):60-68.
[15]欧阳健,毛志强,修立军.测井低对比度油层成因机理与评价方法[M].北京:石油工业出版社,2009:229-269.