基岩油气藏裂缝性储层的成像测井评价及裂缝预测
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摘要
基岩油气藏裂缝性储层具有复杂的储集空间和储层非均质性,为了实现对基岩油气藏的储层精细评价和裂缝预测,以岩心分析资料为基础,将常规测井、成像测井、地震资料与地质理论相结合,对研究区的7口井进行了裂缝及孔洞分析、现今地应力与裂缝有效性分析和储层裂缝定量评价,综合预测了裂缝发育带。分析结果表明,研究区古生界变质岩地层中基本以基岩内幕油气藏为主;现今最大水平主应力方向主要呈北东—南西向和北东东—南西西向;裂缝的主要走向与古潜山主断层走向大致平行,属纵裂缝;裂缝主要发育在东西两侧靠近断层、近源的构造陡坡上的硬脆性变质岩段。此解释结果与试油资料、地质情况吻合较好。
The fractured basement reservoirs are of the complicated storage space and heterogeneity.On the basis of core data,the conventional logging,imaging logging and seismic data were combined with geological theories and used to analyze the fracture,vugs,current stress and fracture effectiveness of seven wells.The reservoir fractures were quantitatively evaluated,and the fractured zones in the studied area were predicted.The analysis results show that the main type of basement reservoirs in the Palaeozoic metamorphic formation is the inside reservoirs,and the main current maximum horizontal principal stress is in directions of NE-SW and NEE-SWW.The main fracture strike is approximately parallel to the main fault,and the fractures are developed in the brittle hard metamorphic rock on the steep structural slope near the fault and the oil source.The interpreted results of this method are matchable very well with the well test data and the actual geologic state.
The fractured basement reservoirs are of the complicated storage space and heterogeneity.On the basis of core data,the conventional logging,imaging logging and seismic data were combined with geological theories and used to analyze the fracture,vugs,current stress and fracture effectiveness of seven wells.The reservoir fractures were quantitatively evaluated,and the fractured zones in the studied area were predicted.The analysis results show that the main type of basement reservoirs in the Palaeozoic metamorphic formation is the inside reservoirs,and the main current maximum horizontal principal stress is in directions of NE-SW and NEE-SWW.The main fracture strike is approximately parallel to the main fault,and the fractures are developed in the brittle hard metamorphic rock on the steep structural slope near the fault and the oil source.The interpreted results of this method are matchable very well with the well test data and the actual geologic state.
引文
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[17]黄继新,彭仕宓,王小军,等.成像测井资料在裂缝和地应力研究中的应用[J].石油学报,2006,27(6):65-69.Huang Jixin,Peng Shi mi,Wang Xiaojun,et al.Applications ofi maginglogging datainthe research of fracture and ground stress[J].Acta Petrolei Sinica,2006,27(6):65-69.
[18]冯斌,田波,韩德辉,等.成像测井技术在胜利油田桩海地区微裂隙构造分析中的应用[J].浙江大学学报:工学版,2003,37(2):254-258.Feng Bin,Tian Bo,Han Dehui,et al.Application of i maging log-ging technology on the analysis of micro-fissustructures in theZhuanghai area,Shengli Oilfield[J].Journal of Zhejiang Univer-sity:Engineering Science,2003,37(2):254-258.
[19]王鹏,金卫东,高会军,等.声、电成像测井资料裂缝识别技术及其应用[J].测井技术,2000,24(增刊):487-490.Wang Peng,Jin Weidong,Gao Huijun,et al.Fracture identifica-tion with acoustic and electric i maginglogging data and their ap-plications[J].Well Logging Technology,2000,24(Supplement):487-490.
[20]Luthi S M,Souhaite P.Fracture apertures fromelectrical bore-hole scans[J].Geophysics,1990,55(3):821-833.
[21]曾联波,漆家福,王永秀.低渗透储层构造裂缝的成因类型及其形成地质条件[J].石油学报,2007,28(4):52-56.Zeng Lianbo,Qi Jiafu,Wang Yongxiu.Origin type of tectonicfractures and geological conditions inlow-permeability reservoirs[J].Acta Petrolei Sinica,2007,28(4):52-56.
[22]曾联波,王正国,肖淑容,等.中国西部盆地挤压逆冲构造带低角度裂缝的成因及意义[J].石油学报,2009,30(1):56-60.Zeng Lianbo,Wang Zhengguo,Xiao Shurong,et al.The originand geological significance of lowdip-angle fracturesinthe thrustzones of the western basins of China[J].Acta Petrolei Sinica,2009,30(1):56-60.
[2]潘钟祥.不整合对于油气运移聚集的重要性[J].石油学报,1983,4(4):1-10.Pan Zhongxiang.Significance of unconformityto oil and gas migrationand accumulation[J].Acta Petrolei Sinica,1983,4(4):1-10.
[3]潘钟祥.不整合对于油气运移聚集的重要性及寻找不整合面下的某些油气藏[J].地质论评,1983,29(4):374-381.Pan Zhongxiang.The significance of unconformities for the mi-gration and accumulation of oil and gas and search for some oiland gas deposits below unconformities[J].Geological Review,1983,29(4):374-381.
[4]刘大听,张淑娟,童亨茂.任丘潜山油藏裂缝预测及剩余油分布研究[J].石油学报,2001,22(4):49-54.Liu Dating,Zhang Shujuan,Tong Hengmao.The fracture predic-tion study of buried hill reservoir in Renqiu[J].Acta PetroleiSinica,2001,22(4):49-54.
[5]周心怀,项华,于水,等.渤海锦州南变质岩潜山油藏储集层特征与发育控制因素[J].石油勘探与开发,2005,32(6):17-20.Zhou Xinhuai,Xiang Hua,Yu Shui,et al.Reservoir characteris-tics and development controlling factors of JZS Neo-Archeanmetamorphic buried hill oil pool in Bohai Sea[J].Petroleum Ex-ploration and Development,2005,32(6):17-20.
[6]Wu S G,Wang X L,Ji Y X,et al.Application of forecastingstructural cracks technique of3D Move in Chengdao buried hill[J].Science in China:Series D,2004,34(9):818-824.
[7]闫相宾,张涛.塔河油田碳酸盐岩大型隐蔽油藏成藏机理探讨[J].地质论评,2004,50(4):370-376.Yan Xiangbin,Zhang Tao.Discussion onformation mechanismofthe large-scale carbonate rock subtle reservoir in the Tahe Oil-field[J].Geological Review,2004,50(4):370-376.
[8]朱留方,吴海燕,翟勇.太古界变质岩储集层测井资料综合评价[J].天然气工业,2005,25(11):39-42.Zhu Liufang,Wu Haiyan,Zhai Yong.Comprehensively evalua-ting the log data of Archaeozoic erathem metamorphics reservoir[J].Natural Gas Industry,2005,25(11):39-42.
[9]张流,周永胜.储层裂缝发育程度的判别准则[J].石油学报,2004,25(4):33-37.Zhang Liu,Zhou Yongsheng.Evaluation criteria for developmentdegree of micro cracks in oil and gas reservoir[J].Acta PetroleiSinica,2004,25(4):33-37.
[10]邓攀,陈孟晋,高哲荣,等.火山岩储层构造裂缝的测井识别及解释[J].石油学报,2002,23(6):32-36.Deng Pan,Chen Mengjin,Gao Zherong,et al.Log response andexplanation of structural fractures in volcanic rock reservoir[J].Acta Petrolei Sinica,2002,23(6):32-36.
[11]王学军,陈钢花,张家震,等.古潜山油藏裂缝性储层的测井评价[J].石油大学学报:自然科学版,2003,27(5):25-28.Wang Xuejun,Chen Ganghua,Zhang Jiazhen,et al.Logging eval-uation of fractured reservoirsin buried hills[J].Journal of the U-niversity of Petroleum,China:Edition of Natural Science,2003,27(5):25-28.
[12]陈钢花,王学军,王永刚,等.古潜山裂缝性油藏储层参数横向预测[J].石油大学学报:自然科学版,2005,29(4):26-30.Chen Ganghua,Wang Xuejun,Wang Yonggang,et al.Transver-sal prediction for reservoir parameters of fractured reservoirs inburied hills[J].Journal of the University of Petroleum,China:E-dition of Natural Science,2005,29(4):26-30.
[13]吴智勇,郭建华,吴东胜.大民屯凹陷静安堡西侧低潜山变质岩储层裂缝发育特征[J].石油与天然气地质,2001,22(4):322-325.Wu Zhiyong,Guo Jianhua,Wu Dongsheng.Fractured character-istics of metamorphic reservoirs in low buried-hill in West ofJing’anpu,Damintun Depression[J].Oil&Gas Geology,2001,22(4):322-325.
[14]Howard J H.Description of natural fracture systems for quanti-tative usein petroleumgeology[J].AAPG Bulletin,1990,74(2):151-162.
[15]肖丽,范晓敏.利用成像测井资料标定常规测井资料裂隙发育参数的方法研究[J].吉林大学学报:地球科学版,2003,33(4):559-563.Xiao Li,Fan Xiaomin.Study onthe method of evaluatingfractureintensity fromconventional logs calibratedi maginglogs[J].Jour-nal of Jilin University:Earth Science Edition,2003,33(4):559-563.
[16]曹嘉猷,刘士安,高敏,等.测井资料综合解释[M].北京:石油工业出版社,2002:244-252.Cao Jiayou,Liu Shi’an,Gao Min,et al.Comprehensive log inter-pretation[M].Beijing:PetroleumIndustry Press,2002:244-252.
[17]黄继新,彭仕宓,王小军,等.成像测井资料在裂缝和地应力研究中的应用[J].石油学报,2006,27(6):65-69.Huang Jixin,Peng Shi mi,Wang Xiaojun,et al.Applications ofi maginglogging datainthe research of fracture and ground stress[J].Acta Petrolei Sinica,2006,27(6):65-69.
[18]冯斌,田波,韩德辉,等.成像测井技术在胜利油田桩海地区微裂隙构造分析中的应用[J].浙江大学学报:工学版,2003,37(2):254-258.Feng Bin,Tian Bo,Han Dehui,et al.Application of i maging log-ging technology on the analysis of micro-fissustructures in theZhuanghai area,Shengli Oilfield[J].Journal of Zhejiang Univer-sity:Engineering Science,2003,37(2):254-258.
[19]王鹏,金卫东,高会军,等.声、电成像测井资料裂缝识别技术及其应用[J].测井技术,2000,24(增刊):487-490.Wang Peng,Jin Weidong,Gao Huijun,et al.Fracture identifica-tion with acoustic and electric i maginglogging data and their ap-plications[J].Well Logging Technology,2000,24(Supplement):487-490.
[20]Luthi S M,Souhaite P.Fracture apertures fromelectrical bore-hole scans[J].Geophysics,1990,55(3):821-833.
[21]曾联波,漆家福,王永秀.低渗透储层构造裂缝的成因类型及其形成地质条件[J].石油学报,2007,28(4):52-56.Zeng Lianbo,Qi Jiafu,Wang Yongxiu.Origin type of tectonicfractures and geological conditions inlow-permeability reservoirs[J].Acta Petrolei Sinica,2007,28(4):52-56.
[22]曾联波,王正国,肖淑容,等.中国西部盆地挤压逆冲构造带低角度裂缝的成因及意义[J].石油学报,2009,30(1):56-60.Zeng Lianbo,Wang Zhengguo,Xiao Shurong,et al.The originand geological significance of lowdip-angle fracturesinthe thrustzones of the western basins of China[J].Acta Petrolei Sinica,2009,30(1):56-60.
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