准噶尔盆地南缘高探1井重大发现及下组合勘探前景展望
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摘要
高探1井于白垩系清水河组测试获日产千方高产油气流,准噶尔盆地南缘下组合勘探取得重大发现。准噶尔盆地南缘下组合具备形成大油气田的有利成藏条件,主要表现在:①发育多套烃源岩,其中侏罗系、二叠系为主力烃源岩,烃源灶规模大;②发育白垩系清水河组、侏罗系头屯河组和喀拉扎组等多套规模有效储集层;③发育白垩系吐谷鲁群区域性巨厚泥岩盖层,普遍发育异常高压,具备良好封盖能力;④发育成排成带分布的大型背斜构造,北部斜坡区还具有形成大型地层岩性圈闭的条件,为形成大油气田提供了良好圈闭条件;⑤烃源岩、储集层、盖层等静态要素匹配良好,动态演化有利于油气规模聚集。准噶尔盆地南缘下组合具有西段四棵树凹陷、中段和东段大构造、北部斜坡等3个有利勘探方向。
Well Gaotan 1 was tested a high yield oil and gas flow of more than 1 000 m~3 a day in the Cretaceous Qingshuihe Formation,marking a major breakthrough in the lower assemblage of the southern margin of Junggar Basin. The lower assemblage in the southern margin of the Junggar Basin has favorable geological conditions for forming large Petroleum fields, including:(1) Multiple sets of source rocks, of which the Jurassic and Permian are the main source rocks, with a large source kitchen.(2) Multiple sets of effective reservoirs,namely Cretaceous Qingshuihe Formation, Jurassic Toutunhe Formation and the Khalza Formation etc.(3) Regional thick mudstone caprock of Cretaceous Tugulu Group, generally with abnormally high pressure and good sealing ability.(4) Giant structural traps and litho-stratigraphic traps are developed. The northern slope also has the conditions for large-scale litho-stratigraphic traps.(5) Static elements such as source rocks, reservoirs and caprocks are well matched, and the dynamic evolution is suitable for large oil and gas accumulation. The lower assemblage of the southern margin of the Junggar Basin has three favorable exploration directions, the Sikeshu Sag in the west part, the large structures in the middle and eastern part, and the northern slope.
Well Gaotan 1 was tested a high yield oil and gas flow of more than 1 000 m~3 a day in the Cretaceous Qingshuihe Formation,marking a major breakthrough in the lower assemblage of the southern margin of Junggar Basin. The lower assemblage in the southern margin of the Junggar Basin has favorable geological conditions for forming large Petroleum fields, including:(1) Multiple sets of source rocks, of which the Jurassic and Permian are the main source rocks, with a large source kitchen.(2) Multiple sets of effective reservoirs,namely Cretaceous Qingshuihe Formation, Jurassic Toutunhe Formation and the Khalza Formation etc.(3) Regional thick mudstone caprock of Cretaceous Tugulu Group, generally with abnormally high pressure and good sealing ability.(4) Giant structural traps and litho-stratigraphic traps are developed. The northern slope also has the conditions for large-scale litho-stratigraphic traps.(5) Static elements such as source rocks, reservoirs and caprocks are well matched, and the dynamic evolution is suitable for large oil and gas accumulation. The lower assemblage of the southern margin of the Junggar Basin has three favorable exploration directions, the Sikeshu Sag in the west part, the large structures in the middle and eastern part, and the northern slope.
引文
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[13]魏东涛,赵应成,阿不力米提,等.准噶尔盆地南缘前陆冲断带油气成藏差异性分析[J].高校地质学报,2010,16(3):339-350.WEI Dongtao,ZHAO Yingcheng,ABULIMITI,et al.Difference of hydrocarbon accumulation in the foreland thrust-fold belt of the southern Junggar Basin[J].Geological Journal of China Universities,2010,16(3):339-350.
[14]付晓飞,吴桐,吕延防,等.油气藏盖层封闭性研究现状及未来发展趋势[J].石油与天然气地质,2018,39(3):454-471.FU Xiaofei,WU Tong,LYU Yanfang,et al.Research status and development trend of the reservoir cap rock sealing properties[J].Oil&Gas Geology,2018,39(3):454-471.
[15]付广,刘江涛.中国高效大中型气田形成的封盖保存条件[J].石油勘探与开发,2006,33(6):662-666.FU Guang,LIU Jiangtao.Sealing and preservation conditions for large and medium gas fields of China[J].Petroleum Exploration and Development,2006,33(6):662-666.
[16]TIGERT V,AL-SHAIEB Z.Pressure seals:Their diagenetic banding patterns[J].Earth Science Reviews,1990,29(1):227-240.
[17]MAGARA K.Pressure sealing:An important agent for hydrocarbon entrapment[J].Journal of Petroleum Science and Engineering,1993,9(1):67-80.
[18]DARBY D,STUART H R,COUPLES G D.Pressure cells and pressure seals in the UK Central Graben[J].Marine and Petroleum Geology,1996,13(8):865-878.
[19]邵雨.准噶尔盆地南缘深层下组合侏罗系油气成藏研究[J].高校地质学报,2013,19(1):86-94.SHAO Yu.Hydrocarbon accumulation of the Jurassic deeply-buried lower assemblage in the southern Junggar Basin[J].Geological Journal of China Universities,2013,19(1):86-94.
[20]汪新,贾承造,杨树锋,等.南天山库车褶皱冲断带构造几何学和运动学[J].地质科学,2002,37(3):372-384.WANG Xin,JIA Chengzao,YANG Shufeng,et al.Geometry and kinematics of the Kuche fold-and-thrust belt in the south Tianshan[J].Chinese Journal of Geology,2002,37(3):372-384.
[2]曲国胜,马宗晋,陈新发,等.论准噶尔盆地构造及其演化[J].新疆石油地质,2009,30(1):1-4.QU Guosheng,MA Zongjin,CHEN Xinfa,et al.On structures and evolutions in Junggar Basin[J].Xinjiang Petroleum Geology,2009,30(1):1-4.
[3]郭召杰,吴朝东,张志诚,等.准噶尔盆地南缘构造控藏作用及大型油气藏勘探方向浅析[J].高校地质学报,2011,17(2):185-195.GUO Zhaojie,WU Chaodong,ZHANG Zhicheng,et a1.Tectonic control on hydrocarbon accumulation and prospect for large oil-gas field exploration in the Southern Junggar Basin[J].Geological Journal of China Universities,2011,17(2):185-195.
[4]雷德文,张健,陈能贵,等.准噶尔盆地南缘下组合成藏条件与大油气田勘探前景[J].天然气工业,2012,32(2):16-22.LEI Dewen,ZHANG Jian,CHEN Nenggui,et al.Conditions for gas pooling in the lower assemblage in the southern margin of the Junggar Basin and the exploration prospect of large hydrocarbon fields[J].Natural Gas Industry,2012,32(2):16-22.
[5]匡立春,王绪龙,张健,等.准噶尔盆地南缘霍-玛-吐构造带构造建模与玛河气田的发现[J].天然气工业,2012,32(2):11-16.KUANG Lichun,WANG Xulong,ZHANG Jian,et al.Structural modeling of the Huoerguosi-Manasi-Tugulu thrust belt at the southern margin of the Junggar Basin and the discovery of the Mahe gas field[J].Natural Gas Industry,2012,32(2):11-16.
[6]李学义,邵雨,李天明.准噶尔盆地南缘三个油气成藏组合研究[J].石油勘探与开发,2003,30(6):32-34.LI Xueyi,SHAO Yu,LI Tianming.Three oil-reservoir combinations in south marginal of Junggar Basin,Northwest China[J].Petroleum Exploration and Development,2003,30(6):32-34.
[7]况军,贾希玉.喜马拉雅运动与准噶尔盆地南缘油气成藏[J].新疆石油地质,2005,26(2):129-133.KUANG Jun,JIA Xiyu.Relationship between Himalayan movement and hydrocarbon accumulation in southern margin of Junggar Basin[J].Xinjiang Petroleum Geology,2005,26(2):129-133.
[8]陈建平,王绪龙,邓春萍,等.准噶尔盆地南缘油气生成与分布规律:烃源岩地球化学特征与生烃史[J].石油学报,2015,36(7):767-780.CHEN Jianping,WANG Xulong,DENG Chunping,et al.Geochemcial features of source rocks in the southern margin,Junggar Basin,Northwestern China[J].Acta Petrolei Sinica,2015,36(7):767-780.
[9]王绪龙,支东明,王屿涛,等.准噶尔盆地烃源岩与油气地球化学[M].北京:石油工业出版社,2013.WANG Xulong,ZHI Dongming,WANG Yutao,et al.Geochemistry of source rock and petroleum in the Junggar Basin[M].Beijing:Petroleum Industry Press,2013.
[10]魏东涛,贾东,赵应成,等.准噶尔盆地南缘原油地球化学特征[J].石油与天然气地质,2007,28(3):433-440.WEI Dongtao,JIA Dong,ZHAO Yingcheng,et al.Geochemical behaviors of crude oil in the southern margin of Junggar Basin[J].Oil&Gas Geology,2007,28(3):433-440.
[11]雷德文,陈能贵,李学义,等.准噶尔盆地南缘下部成藏组合储集层及分布特征[J].新疆石油地质,2012,33(6):648-650.LEI Dewen,CHEN Nenggui,LI Xueyi,et al.The major reservoirs and distribution of lower Combination in southern margin of Jungar Basin[J].Xinjiang Petroleum Geology,2012,33(6):648-650.
[12]田孝茹,卓勤功,张健,等.准噶尔盆地南缘吐谷鲁群盖层评价及对下组合油气成藏的意义[J].石油与天然气地质,2017,38(2):334-344.TIAN Xiaoru,ZHUO Qingong,ZHANG Jian,et al.Sealing capacity of the Tugulu Group and its significance for hydrocarbon accumulation in the lower play in the southern Junggar Basin,northwest China[J].Oil&Gas Geology,2017,38(2):334-344.
[13]魏东涛,赵应成,阿不力米提,等.准噶尔盆地南缘前陆冲断带油气成藏差异性分析[J].高校地质学报,2010,16(3):339-350.WEI Dongtao,ZHAO Yingcheng,ABULIMITI,et al.Difference of hydrocarbon accumulation in the foreland thrust-fold belt of the southern Junggar Basin[J].Geological Journal of China Universities,2010,16(3):339-350.
[14]付晓飞,吴桐,吕延防,等.油气藏盖层封闭性研究现状及未来发展趋势[J].石油与天然气地质,2018,39(3):454-471.FU Xiaofei,WU Tong,LYU Yanfang,et al.Research status and development trend of the reservoir cap rock sealing properties[J].Oil&Gas Geology,2018,39(3):454-471.
[15]付广,刘江涛.中国高效大中型气田形成的封盖保存条件[J].石油勘探与开发,2006,33(6):662-666.FU Guang,LIU Jiangtao.Sealing and preservation conditions for large and medium gas fields of China[J].Petroleum Exploration and Development,2006,33(6):662-666.
[16]TIGERT V,AL-SHAIEB Z.Pressure seals:Their diagenetic banding patterns[J].Earth Science Reviews,1990,29(1):227-240.
[17]MAGARA K.Pressure sealing:An important agent for hydrocarbon entrapment[J].Journal of Petroleum Science and Engineering,1993,9(1):67-80.
[18]DARBY D,STUART H R,COUPLES G D.Pressure cells and pressure seals in the UK Central Graben[J].Marine and Petroleum Geology,1996,13(8):865-878.
[19]邵雨.准噶尔盆地南缘深层下组合侏罗系油气成藏研究[J].高校地质学报,2013,19(1):86-94.SHAO Yu.Hydrocarbon accumulation of the Jurassic deeply-buried lower assemblage in the southern Junggar Basin[J].Geological Journal of China Universities,2013,19(1):86-94.
[20]汪新,贾承造,杨树锋,等.南天山库车褶皱冲断带构造几何学和运动学[J].地质科学,2002,37(3):372-384.WANG Xin,JIA Chengzao,YANG Shufeng,et al.Geometry and kinematics of the Kuche fold-and-thrust belt in the south Tianshan[J].Chinese Journal of Geology,2002,37(3):372-384.
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