基于测井-录井资料评价变质岩风化壳结构——以渤海南部渤中X构造为例
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摘要
渤海地区变质岩潜山油气藏相继获得较大的发现,但前人对于变质岩风化壳研究多沿用其他岩类的方法,缺乏针对性。以渤海海域渤中X构造变质岩风化壳为研究对象,通过对大量岩心薄片观察、测井资料及元素录井数据的趋势背景值计算、特征元素提取和聚类分析,建立了一套风化壳定量综合评价方法,其能够清晰地识别和划分变质岩垂向风化壳结构。将该方法在新钻井B井进行了应用,自上而下识别和划分出风化破碎带、强风化裂缝带、弱风化裂缝带和未风化裂缝带4个分带,有利地指导了该区的勘探。
Great discoveries have been achieved successively in the buried-hill reservoirs of metamorphic rocks in Bohai area, but there are lack of targeted methods to study weathering crust of metamorphic rocks. Taking the weathering crust of metamorphic rocks in Bozhong X structure in the Bohai Sea as the study object, and based on thin section observation, logging data, element mud log data, characteristic element extraction and clustering analysis, a set of quantitatively comprehensive evaluation methods is established for weathering crust,which can clearly identify and classify vertical structures of metamorphic rock weathering crust. The method has been applied in the newly drilled Well B and 4 zones are classified from top to bottom, i.e., weathering crush zone, strongly weathering fracture zone, weak weathering fracture zone and unweathering fracture zone, which provides references for the exploration in the area.
Great discoveries have been achieved successively in the buried-hill reservoirs of metamorphic rocks in Bohai area, but there are lack of targeted methods to study weathering crust of metamorphic rocks. Taking the weathering crust of metamorphic rocks in Bozhong X structure in the Bohai Sea as the study object, and based on thin section observation, logging data, element mud log data, characteristic element extraction and clustering analysis, a set of quantitatively comprehensive evaluation methods is established for weathering crust,which can clearly identify and classify vertical structures of metamorphic rock weathering crust. The method has been applied in the newly drilled Well B and 4 zones are classified from top to bottom, i.e., weathering crush zone, strongly weathering fracture zone, weak weathering fracture zone and unweathering fracture zone, which provides references for the exploration in the area.
引文
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[12]张冲,谢润成,周文,等.川东北元坝地区须三段致密储集层裂缝特征[J].新疆石油地质,2014,35(4):395-398.ZHANG Chong,XIE Runcheng,ZHOU Wen,et al.Fractures characteristics in tight reservoir of the 3rd member of Xujiahe formation in Yuanba area in northeastern Sichuan basin[J].Xinjiang Petroleum Geology,2014,35(4):395-398.
[13]黄烈林,高纯福,张超谟,等.用测井资料划分变质岩裂缝性储层的方法[J].江汉石油学院学报,2002,24(3):25-30.HUANG Lielin,GAO Chunfu,ZHANG Chaomo,et al.Method for identifying fractured reservoirs in metamorphic rock by using welllogging data[J].Journal of Jianghan Petroleum Institute,2002,24(3):25-30.
[14]武向峰,崔红庄,郇玉龙.湖相沉积旋回识别方法在银川盆地中的应用[J].新疆石油地质,2014,35(5):587-592.WU Xiangfeng,CUI Hongzhuang,XUN Yulong.Method for identifying lacustrine sedimentary cycles and application in Yinchuan basin[J].Xinjiang Petroleum Geology,2014,35(5):587-592.
[15]郭小波,黄志龙,涂小仙.马朗凹陷芦草沟组致密储集层复杂岩性识别[J].新疆石油地质,2013,34(6):649-652.GUO Xiaobo,HUANG Zhilong,TU Xiaoxian.Identification and application of complex lithology of Lucaogou tight reservoir in Malang sag,Santanghu basin[J].Xinjiang Petroleum Geology,2013,34(6):649-652.
[16]谢荣举,彭省临.岩石钾质变化及钾交代与成矿关系[J].大地构造与成矿学,1998,22(3):274-279.XIE Rongju,PENG Shenglin.K2O content,K-metasomatism of rock and metallogenesis[J].Geotectonica et Metallogenia,1998,22(3):274-279.
[17]李铁军.大民屯凹陷变质岩潜山储层综合评价研究[D].黑龙江大庆:大庆石油学院,2003:23-55.LI Tiejun.The comprehensive reservoir evaluation of metamorphic buried-hill in Da Min Tun sag[D].Daqing,Heilongjiang:Daqing Petroleum Institute,2003:23-55.
[18]谭锋奇,李洪奇,许长福,等.基于聚类分析方法的砾岩油藏储层类型划分[J].地球物理学进展,2012,27(1):246-254.TAN Fengqi,LI Hongqi,XU Changfu,et al.Reservoir classification of conglomerate reservoir base on clustering analysis method[J].Progress in Geophysics,2012,27(1):246-254.
[19]闫明,张云峰,李易霖.基于K-均值聚类与贝叶斯判别的储层定量评价--以大安油田泉四段储层为例[J].深圳大学学报(理工版),2016,33(2):211-220.YAN Ming,ZHANG Yunfeng,LI Yilin.Quantitative reservoir evaluation based on K-means cluster analysis and Bayes discriminant analysis:a case study on reservoir in the 4th member of Quantou formation in Daan oilfield[J].Journal of Shenzhen University(Science and Engineering),2016,33(2):211-220.
[20]薛永安,李慧勇.渤海海域深层太古界变质岩潜山大型凝析气田的发现及其地质意义[J].中国海上油气,2018,30(3):1-9.XUE Yongan,LI Huiyong.Large condensate gas field in deep Archean metamorphic buried hill in Bohai sea:discovery and geological significance[J].China Offshore Oil and Gas,2018,30(3):1-9.
[21]童凯军,赵春明,吕坐彬,等.渤海变质岩潜山油藏储集层综合评价与裂缝表征[J].石油勘探与开发,2012,39(1):56-63.TONG Kaijun,ZHAO Chunming,LU Zuobin,et al.Reservoir evaluation and fracture characterization of the metamorphic buried hill reservoir in Bohai Bay[J].Petroleum Exploration and Development,2012,39(1):56-63.
[2]张莉,季宏兵,高杰,等.贵州碳酸盐岩风化壳主元素、微量元素及稀土元素的地球化学特征[J].地球化学,2015,44(4):323-336.ZHANG Li,JI Hongbing,GAO Jie,et al.Geochemical characteristics of major,trace and rare earth elements in typical carbonate weathered profiles of Guizhou plateau[J].Geochimica,2015,44(4):323-336.
[3]邹才能,侯连华,杨帆,等.碎屑岩风化壳结构及油气地质意义[J].中国科学:地球科学,2014,44(12):2 652-2 664.ZOU Caineng,HOU Lianhua,YANG Fan,et al.Clastic rock weathering crust structure and its petroleum geological significance[J].Science China:Earth Sciences,2014,44(12):2 652-2 664.
[4]伍劲,高先志,周伟,等.柴达木盆地东坪地区基岩风化壳与油气成藏[J].新疆石油地质,2018,39(6):666-672.WU Jin,GAO Xianzhi,ZHOU Wei,et al.Base rock weathering crusts and petroleum accumulation in Dongping area,Qaidam basin[J].Xinjiang Petroleum Geology,2018,39(6):666-672.
[5]彭传圣,林会喜,刘华,等.渤海湾盆地构造演化与古生界原生油气成藏[J].高校地质学报,2008,14(2):206-216.PENG Chuansheng,LIN Huixi,LIU Hua,et al.Tectonic evolution of the Bohai Bay basin and the Palaeozoic original oil and gas reservoirs[J].Geological Journal of China Universities,2008,14(2):206-216.
[6]张宇.岩性对兴隆台变质岩潜山内幕油藏的控制作用[J].特种油气藏,2016,23(4):64-68.ZHANG Yu.Effects of lithology on Xinglongtai metamorphic buriedhill inner reservoir[J].Special Oil&Gas Reservoirs,2016,23(4):64-68
[7]吴孔友,查明,柳广弟.准噶尔盆地二叠系不整合面及其油气运聚特征[J].石油勘探与开发,2002,29(2):53-57.WU Kongyou,ZHA Ming,LIU Guangdi.The unconformity surface in the Permian of Junggar basin and the characters of oil-gas migration and accumulation[J].Petroleum Exploration and Development,2002,29(2):53-57.
[8]白松涛,于利民,安纪星,等.伊通盆地莫里青断陷变质岩优势岩性测井评价[J].新疆石油地质,2018,39(5):566-572.BAI Songtao,YU Limin,AN Jixing,et al.Logging evaluation of advantageous lithology of metamorphic reservoir in Moliqing fault depression,Yitong basin[J].Xinjiang Petroleum Geology,2018,39(5):566-572.
[9]王幼麟.三峡工程基岩风化壳利用的微观研究[J].长江科学院院报,1992,9(增刊1):65-71.WANG Youlin.A microscopic study on use of weathered crust of bed rock of the Three Gorges project[J].Journal of Yangtze River Scientific Research Institute,1992,9(Supp.1):65-71.
[10]APLIN A C,MACQUAKER J H S.Mudstone diversity:origin and implications for source,seal,and reservoir properties in petroleum systems[J].AAPG Bulletin,2011,95(12):2 031-2 059.
[11]李双应,杨栋栋,王松,等.南天山中段上石炭统碎屑岩岩石学、地球化学、重矿物和锆石年代学特征及其对物源区、构造演化的约束[J].地质学报,2014,88(2):167-184.LI Shuangying,YANG Dongdong,WANG Song,et al.Characteristics of petrology,geochemistry,heavy minerals and isotope chronology of Upper Carboniferous detrital rocks in the middle segment of South Tianshan and constraints to the provenance and tectonic evolution[J].Acta Geologica Sinica,2014,88(2):167-184.
[12]张冲,谢润成,周文,等.川东北元坝地区须三段致密储集层裂缝特征[J].新疆石油地质,2014,35(4):395-398.ZHANG Chong,XIE Runcheng,ZHOU Wen,et al.Fractures characteristics in tight reservoir of the 3rd member of Xujiahe formation in Yuanba area in northeastern Sichuan basin[J].Xinjiang Petroleum Geology,2014,35(4):395-398.
[13]黄烈林,高纯福,张超谟,等.用测井资料划分变质岩裂缝性储层的方法[J].江汉石油学院学报,2002,24(3):25-30.HUANG Lielin,GAO Chunfu,ZHANG Chaomo,et al.Method for identifying fractured reservoirs in metamorphic rock by using welllogging data[J].Journal of Jianghan Petroleum Institute,2002,24(3):25-30.
[14]武向峰,崔红庄,郇玉龙.湖相沉积旋回识别方法在银川盆地中的应用[J].新疆石油地质,2014,35(5):587-592.WU Xiangfeng,CUI Hongzhuang,XUN Yulong.Method for identifying lacustrine sedimentary cycles and application in Yinchuan basin[J].Xinjiang Petroleum Geology,2014,35(5):587-592.
[15]郭小波,黄志龙,涂小仙.马朗凹陷芦草沟组致密储集层复杂岩性识别[J].新疆石油地质,2013,34(6):649-652.GUO Xiaobo,HUANG Zhilong,TU Xiaoxian.Identification and application of complex lithology of Lucaogou tight reservoir in Malang sag,Santanghu basin[J].Xinjiang Petroleum Geology,2013,34(6):649-652.
[16]谢荣举,彭省临.岩石钾质变化及钾交代与成矿关系[J].大地构造与成矿学,1998,22(3):274-279.XIE Rongju,PENG Shenglin.K2O content,K-metasomatism of rock and metallogenesis[J].Geotectonica et Metallogenia,1998,22(3):274-279.
[17]李铁军.大民屯凹陷变质岩潜山储层综合评价研究[D].黑龙江大庆:大庆石油学院,2003:23-55.LI Tiejun.The comprehensive reservoir evaluation of metamorphic buried-hill in Da Min Tun sag[D].Daqing,Heilongjiang:Daqing Petroleum Institute,2003:23-55.
[18]谭锋奇,李洪奇,许长福,等.基于聚类分析方法的砾岩油藏储层类型划分[J].地球物理学进展,2012,27(1):246-254.TAN Fengqi,LI Hongqi,XU Changfu,et al.Reservoir classification of conglomerate reservoir base on clustering analysis method[J].Progress in Geophysics,2012,27(1):246-254.
[19]闫明,张云峰,李易霖.基于K-均值聚类与贝叶斯判别的储层定量评价--以大安油田泉四段储层为例[J].深圳大学学报(理工版),2016,33(2):211-220.YAN Ming,ZHANG Yunfeng,LI Yilin.Quantitative reservoir evaluation based on K-means cluster analysis and Bayes discriminant analysis:a case study on reservoir in the 4th member of Quantou formation in Daan oilfield[J].Journal of Shenzhen University(Science and Engineering),2016,33(2):211-220.
[20]薛永安,李慧勇.渤海海域深层太古界变质岩潜山大型凝析气田的发现及其地质意义[J].中国海上油气,2018,30(3):1-9.XUE Yongan,LI Huiyong.Large condensate gas field in deep Archean metamorphic buried hill in Bohai sea:discovery and geological significance[J].China Offshore Oil and Gas,2018,30(3):1-9.
[21]童凯军,赵春明,吕坐彬,等.渤海变质岩潜山油藏储集层综合评价与裂缝表征[J].石油勘探与开发,2012,39(1):56-63.TONG Kaijun,ZHAO Chunming,LU Zuobin,et al.Reservoir evaluation and fracture characterization of the metamorphic buried hill reservoir in Bohai Bay[J].Petroleum Exploration and Development,2012,39(1):56-63.