准噶尔盆地中拐凸起侏罗系八道湾组储层特征及控制因素
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摘要
综合中拐凸起侏罗系八道湾组岩心观察结果及薄片鉴定、扫描电镜、X-射线衍射等分析化验结果,研究其储层岩石学特征、孔隙类型、孔喉结构特征及物性特征等,结果表明:中拐凸起侏罗系八道湾组储层主要为中细砂岩,从八一段到八三段粒度渐粗,具有低成分成熟度、低泥质含量、低胶结物含量、中等结构成熟度特征;其储层类型主要为低孔低渗储层,少数为中孔中渗,主要发育原生粒间孔及残余粒间孔隙,其次为粒间溶孔,粒内溶孔发育程度低,呈现细喉道孔喉结构特征。以此为基础对储层物性的影响因素进行分析,结果显示:沉积微相是控制该区八道湾组储层发育的主要因素,粒级粗的砂岩往往物性更佳,是相对优质的储层;压实作用造成的原始孔隙损失占50%以上,是成岩过程中原生孔隙损失的主要因素,胶结作用造成的原始孔隙损失约为14%,是造成储层孔隙损失的次要因素;溶蚀作用造成了研究区内40%以上溶蚀孔隙的发育,对于储集性能的改善有极为重要的作用。
A comprehensive study of Badaowan Formation in Zhongguai Uplift is performed,including the reservoir petrology,pore types,pore structure and material characteristics by using the core analysis,thin section identification,scanning electron microscopy and X-ray diffraction analysis.The results indicate that the Badaowan Formation reservoir belongs to a low-porosity-low-permeability reservoir,with few part of medium-porosity-medium-permeability reservoir;Med-fine grained sandstone mainly developed and the coarse grain size gradually becomes bigger with the depth increasing from one segment to three segments of Badaowan Formation.It shows the characteristics of low compositional maturity,low clay content,low cement content and medium textural maturity;The pore types showing fine throat structure characteristics.Sedimentary microfacies are the main factors controlling the development of the Badaowan Formation,coarse grained sandstones are often relatively high quality reservoirs.The compaction is the main factor of primary pore loss which caused the original pore loss more than 50%,and the development of plastic debris accelerates the compaction of sandstone.Cementation is the secondary factor of reservoir pore loss which caused almost 14% original pore loss.The dissolution has a very positive effect on reservoir performance and caused the dissolution pore to increase over 40%.
A comprehensive study of Badaowan Formation in Zhongguai Uplift is performed,including the reservoir petrology,pore types,pore structure and material characteristics by using the core analysis,thin section identification,scanning electron microscopy and X-ray diffraction analysis.The results indicate that the Badaowan Formation reservoir belongs to a low-porosity-low-permeability reservoir,with few part of medium-porosity-medium-permeability reservoir;Med-fine grained sandstone mainly developed and the coarse grain size gradually becomes bigger with the depth increasing from one segment to three segments of Badaowan Formation.It shows the characteristics of low compositional maturity,low clay content,low cement content and medium textural maturity;The pore types showing fine throat structure characteristics.Sedimentary microfacies are the main factors controlling the development of the Badaowan Formation,coarse grained sandstones are often relatively high quality reservoirs.The compaction is the main factor of primary pore loss which caused the original pore loss more than 50%,and the development of plastic debris accelerates the compaction of sandstone.Cementation is the secondary factor of reservoir pore loss which caused almost 14% original pore loss.The dissolution has a very positive effect on reservoir performance and caused the dissolution pore to increase over 40%.
引文
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[12]Lv Ximin,Ren Zhanli,Fang Lehua,et al.Dominant factors of the Jurassic stratigraphic reservoir in Zhongguai Uplift of Junggar Basin[J].Natural Gas Geoscience,2006,17(5):703-707.[吕锡敏,任战利,方乐华,等.准噶尔盆地中拐凸起侏罗系岩性油藏控制因素[J].天然气地球科学,2006,17(5):703-707.]
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[14]Wu Yuhan,Wu Caixi,Qu Jianhua,et al.New cognition of sedimentary facies of Sangonghe and Badaowan Formations in Karamay Zhongguai area[J].Xinjiang Petroleum Geology,2010(6):590-592.[吴雨韩,吴采西,瞿建华,等.克拉玛依中拐地区三工河组和八道湾组沉积相新认识[J].新疆石油地质,2010(6):590-592.]
[15]Tan Kaijun,Pan Jianguo,Yao Qingzhou,et al.The formation conditions and main controlling factors of Jurassic lithologic reservoirs in Cheguai area,Junggar Basin[J].Lithologic Reservoirs,2007,19(2):41-44.[谭开俊,潘建国,姚清洲,等.车拐地区侏罗系岩性油气藏形成条件及主控因素[J].岩性油气藏,2007,19(2):41-44.]
[16]Zhang Shuncun,Zhong Weijun,Liang Zeliang,et al.Reservoir diagenesis characteristics of Jurassic Badaowan Formation in Cheguai area,Junggar Basin[J].Lithology Reservoirs,2011,23(5):49-55.[张顺存,仲伟军,梁则亮,等.准噶尔盆地车拐地区侏罗系八道湾组储层成岩作用特征分析[J].岩性油气藏,2011,23(5):49-55.]
[17]Wu Xiaozhi,Jiang Yiqin,Li Baihua.Predominant factor and forecasting of reservoir of Zhongguai-5-8 zone’s Permian Jiamuhe Formation in northwest margin,Jungger Basin[J].Xinjiang Geology,2010,28(2):174-179.[吴晓智,蒋宜勤,李佰华,等.准噶尔盆地西北缘中拐—五八区佳木河组储层主控因素及发育区预测[J].新疆地质,2010,28(2):174-179.]
[18]Wu Heyuan,Tang Yong,Chang Qiusheng.Genesis of sandy conglomerate reservoirs cemented by zeolites in Jiamuhe Formation of Zhongguai Swell,Junggar Basin[J].Xinjiang Petroleum Geology,2017,38(3):281-288.[吴和源,唐勇,常秋生.准噶尔盆地中拐凸起佳木河组沸石类胶结砂砾岩储集层成因机理[J].新疆石油地质,2017,38(3):281-288.]
[19]Liu Zhizhou.Structural Characteristics and Hydrocarbon Accumulation Conditions of the Zhongguai Uplift[D].Research Institute of Petroleum Exploration and Development,2002:21-93.[刘志舟.中拐凸起构造特征与油气成藏条件分析[D].中国石油勘探开发研究院,2002:21-93.]
[20]Zhao Chenglin,Zhu Xiaomin.Sedimentary Petrology[M].Third Edition.Beijing:Petroleum Industry Press,2001:102.[赵澄林,朱筱敏.沉积岩石学[M].3版.北京:石油工业出版社,2001:102.]
[21]Yin Jianguo,Liu Xu,Bai Yu,et al.The characteristics of depositional facies and their influence on reservoir properties in Fudong Slope,Junggar Basin[J].Natural Gas Geoscience,2015,26(supplement 2):23-32.[殷建国,刘旭,白雨,等.准噶尔盆地阜东斜坡区沉积相特征及其对储层物性的控制作用[J].天然气地球科学,2015,26(增刊2):23-32.]
[2]Yan Shibang,Hu Wangshui,Li Ruisheng,et al.Structural features of contemporaneous thrust faults in Hongche fault belt of Junggar Basin[J].Lithology Reservoirs,2008,20(1):64-68.[严世帮,胡望水,李瑞升,等.准噶尔盆地红车断裂带同生逆冲断裂特征[J].岩性油气藏,2008,20(1):64-68.]
[3]Xia Xianbo,Jin Jun.Characteristics of Jurassic structural geology and analysis of exploration potential in the Che-Guai area of Junggar Basin[J].China Petrolem Exploration,2003,8(4):29-33.[夏显佰,靳军.准噶尔盆地西北缘车—拐地区侏罗系构造地质特征与勘探潜力分析[J].中国石油勘探,2003,8(4):29-33.]
[4]Lu Bing,Zhang Jin,Li Tao,et al.Analysis of tectonic framework in Junggar Basin[J].Xinjiang Petroleum Geology,2008,29(3):283-289.[鲁兵,张进,李涛,等.准噶尔盆地构造格架分析[J].新疆石油地质,2008,29(3):283-289.]
[5]Liu Yinhe.Jurassic sedimentation,tectonics and petroleum distribution in Junggar Basin[J].Petroleum Exploration and Development,1999(5):12-15.[刘银河.准噶尔盆地侏罗系沉积构造与油气分布[J].石油勘探与开发,1999(5):12-15.]
[6]Qi Liqi,Bao Zhidong,Wu Boran,et al.Distribution and sequence stratigraphic framework of the Jurassic strata on the northwestern margin of the Junggar Basin[J].Oil&Gas Geology,2008,29(2):261-267.[祁利祺,鲍志东,吴博然,等.准噶尔盆地西北缘侏罗系展布与层序地层格架特征[J].石油与天然气地质,2008,29(2):261-267.]
[7]Pan Jianguo,Tan Kaijun,Tang Yong,et al.Study on petroleum accumulation elements of Jurassic lothologic reservoir and its controlling factors in Junggar Basin[J].Petroleum Geology and Engineering,2007,21(1):16-22.[潘建国,谭开俊,唐勇,等.准噶尔盆地侏罗系岩性油气藏成藏条件及控制因素[J].石油地质与工程,2007,21(1):16-22.]
[8]Tian Ying,Gu Yanling,Song Xinping,et al.Genesis and accumulation of Jurassic oil and gas in Zhongguai area of Junggar Basin[J].Science&Technology Information,2012(2):140-140.[田英,谷艳玲,宋新萍,等.准噶尔盆地中拐地区侏罗系油气成因及成藏分析[J].科技资讯,2012(2):140-140.]
[9]Zhao Libin.The Geochemistry of Petroleum Pool Forming of Zhongguai Uplift in Junggar Basin[D].Beijing:China University of Petroleum,2005.[赵力彬.准噶尔盆地中拐凸起油气成藏地球化学研究[D].北京:中国石油大学,2005.]
[10]Gao Jin,Cao Zhe.Shale gas accumulation conditions of lower Jurassic in Junggar Basin[J].Journal of Southwest Petroleum University:Science&Thchnology Edition,2016(1):37-45.[高劲,曹喆.准噶尔盆地下侏罗统页岩气形成条件[J].西南石油大学学报:自然科学版,2016(1):37-45.]
[11]Wang Zhuochao,Ye Jiaren.Modeling of pool-forming dynamics for Jurassic in Cheguai area,northwest edge of Junggar Basin[J].Geological Sicence and Technology Information,2010,29(2):63-67.[王卓超,叶加仁.准噶尔盆地西北缘车拐地区侏罗系成藏动力学模拟[J].地质科技情报,2010,29(2):63-67.]
[12]Lv Ximin,Ren Zhanli,Fang Lehua,et al.Dominant factors of the Jurassic stratigraphic reservoir in Zhongguai Uplift of Junggar Basin[J].Natural Gas Geoscience,2006,17(5):703-707.[吕锡敏,任战利,方乐华,等.准噶尔盆地中拐凸起侏罗系岩性油藏控制因素[J].天然气地球科学,2006,17(5):703-707.]
[13]Liu Cuimin,Xiang Baoli,Meng Haojin,et al.Oil/Gas origin of Jurassic reservoirs in Zhongguai bulge,Junggar Basin[J].Natural Gas Exploration&Development,2008,31(2):26-27.[刘翠敏,向宝力,孟皓锦,等.准噶尔盆地中拐凸起侏罗系油藏油气成因分析[J].天然气勘探与开发,2008,31(2):26-27.]
[14]Wu Yuhan,Wu Caixi,Qu Jianhua,et al.New cognition of sedimentary facies of Sangonghe and Badaowan Formations in Karamay Zhongguai area[J].Xinjiang Petroleum Geology,2010(6):590-592.[吴雨韩,吴采西,瞿建华,等.克拉玛依中拐地区三工河组和八道湾组沉积相新认识[J].新疆石油地质,2010(6):590-592.]
[15]Tan Kaijun,Pan Jianguo,Yao Qingzhou,et al.The formation conditions and main controlling factors of Jurassic lithologic reservoirs in Cheguai area,Junggar Basin[J].Lithologic Reservoirs,2007,19(2):41-44.[谭开俊,潘建国,姚清洲,等.车拐地区侏罗系岩性油气藏形成条件及主控因素[J].岩性油气藏,2007,19(2):41-44.]
[16]Zhang Shuncun,Zhong Weijun,Liang Zeliang,et al.Reservoir diagenesis characteristics of Jurassic Badaowan Formation in Cheguai area,Junggar Basin[J].Lithology Reservoirs,2011,23(5):49-55.[张顺存,仲伟军,梁则亮,等.准噶尔盆地车拐地区侏罗系八道湾组储层成岩作用特征分析[J].岩性油气藏,2011,23(5):49-55.]
[17]Wu Xiaozhi,Jiang Yiqin,Li Baihua.Predominant factor and forecasting of reservoir of Zhongguai-5-8 zone’s Permian Jiamuhe Formation in northwest margin,Jungger Basin[J].Xinjiang Geology,2010,28(2):174-179.[吴晓智,蒋宜勤,李佰华,等.准噶尔盆地西北缘中拐—五八区佳木河组储层主控因素及发育区预测[J].新疆地质,2010,28(2):174-179.]
[18]Wu Heyuan,Tang Yong,Chang Qiusheng.Genesis of sandy conglomerate reservoirs cemented by zeolites in Jiamuhe Formation of Zhongguai Swell,Junggar Basin[J].Xinjiang Petroleum Geology,2017,38(3):281-288.[吴和源,唐勇,常秋生.准噶尔盆地中拐凸起佳木河组沸石类胶结砂砾岩储集层成因机理[J].新疆石油地质,2017,38(3):281-288.]
[19]Liu Zhizhou.Structural Characteristics and Hydrocarbon Accumulation Conditions of the Zhongguai Uplift[D].Research Institute of Petroleum Exploration and Development,2002:21-93.[刘志舟.中拐凸起构造特征与油气成藏条件分析[D].中国石油勘探开发研究院,2002:21-93.]
[20]Zhao Chenglin,Zhu Xiaomin.Sedimentary Petrology[M].Third Edition.Beijing:Petroleum Industry Press,2001:102.[赵澄林,朱筱敏.沉积岩石学[M].3版.北京:石油工业出版社,2001:102.]
[21]Yin Jianguo,Liu Xu,Bai Yu,et al.The characteristics of depositional facies and their influence on reservoir properties in Fudong Slope,Junggar Basin[J].Natural Gas Geoscience,2015,26(supplement 2):23-32.[殷建国,刘旭,白雨,等.准噶尔盆地阜东斜坡区沉积相特征及其对储层物性的控制作用[J].天然气地球科学,2015,26(增刊2):23-32.]