牛庄洼陷西部沙三中压力与油藏分布关系研究
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摘要
牛庄洼陷是胜利油田东营凹陷的一个重要生油洼陷,沙三中亚段为主要勘探目的层,其中浊积砂体构成了该区主要储集体。本研究利用区内47口井的声波测井时差值,通过泥岩等效深度法计算出了沙三中亚段的5个砂层组的地层压力系数,对牛庄洼陷西部沙三中压力与油藏分布关系进行了研究,得出沙三中超压现象明显,压力为油气运移提供了重要的源动力,目前已发现的油藏大致沿高压、超高压带分布。结合地震反演资料,并叠合砂体埋藏深度、断层及沉积相等诸多因素,预测出了三个有利砂体。
The Niuzhuang Subsag is one of the most important oil generation subsags and the middle Section in Member 3 of Shahejie Formation(abbreviated to the Es3～z Member) is main exploration strata in Dongying Sag of Shengli Oilfield,in which the turbidite sandbodies form the main reservoir bodies in this area.The strata pressure coefficient of 5 sandbodies are worked out by means of mudstone equivalent depth with the acoustic log time-difference of 47 well drillings.The correlation between pressure and reservoir distribution of the Es3～z Member in the west of Niuzhuang Subsag is studied.The study has indicated that overpressure phenomenon is obvious and this overpressure provides the important original power for the oil-gas migration,and found that the reservoirs distribute generally along the high pressure and extra-high pressure zones.The three favorable sandbodies are forecasted by combining with the seismic inversion data and integrating with such factors as the buried depth of sandbodies,faults,sedimentary facies,and so on.
The Niuzhuang Subsag is one of the most important oil generation subsags and the middle Section in Member 3 of Shahejie Formation(abbreviated to the Es3～z Member) is main exploration strata in Dongying Sag of Shengli Oilfield,in which the turbidite sandbodies form the main reservoir bodies in this area.The strata pressure coefficient of 5 sandbodies are worked out by means of mudstone equivalent depth with the acoustic log time-difference of 47 well drillings.The correlation between pressure and reservoir distribution of the Es3～z Member in the west of Niuzhuang Subsag is studied.The study has indicated that overpressure phenomenon is obvious and this overpressure provides the important original power for the oil-gas migration,and found that the reservoirs distribute generally along the high pressure and extra-high pressure zones.The three favorable sandbodies are forecasted by combining with the seismic inversion data and integrating with such factors as the buried depth of sandbodies,faults,sedimentary facies,and so on.
引文
[1]饶孟余,张遂安,李秀生.牛庄洼陷沙三中亚段浊积岩储层成岩作用及主控因素分析[J].地质找矿论丛,2007,22(1):66-70.RAO Meng-yu,ZHANG Sui-an,LI Xiu-sheng.Diagenesis and controlling factors of the turbidite reservoir of sub-middle ofthe third Member of Shahejie Formation in Niuzhuang sag[J].Contributions to Geology and Mineral Resources Research,2007,22(1):66-70.
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[3]漆滨汶,林春明,邱桂强,等.山东省牛庄洼陷古近系沙河街组沙三中亚段储集层成岩作用研究[J].沉积学报,2007,25(1):99-107.QI Bin-wen,LIN Chun-ming,QI U Gui-qiang,et al.Reservoir diagenesis of the intermediate Sectionin Member 3 of ShahejieFormation(Paleogene)in Niuzhuang subsag,Shandong Province[J].Acta Sedi mentologica Sinica,2007,25(1):99-107.
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[6]高永进,邱桂强,陈冬霞,等.牛庄洼陷岩性油藏含油气性及主控因素[J].石油与天然气地质,2004,25(3):284-299.GAO Yong-jin,QI U Gui-qiang,CHEN Dong-xia,et al.Oil/gas shows in lithologic reservoirs in Niuzhuang sag and theirmain controlling factors[J].Oil&Gas Geology,2004,25(3):284-299.
[7]鲍晓欢,郝芳,方勇.东营凹陷牛庄洼陷地层压力演化及其成藏意义[J].地球科学(中国地质大学学报),2007,32(2):241-246.BAO Xiao-huan,HAO Fang,FANG Yong.Evolution of geopressure field in Niuzhuang sag in Dongying depression and itseffect on petroleumaccumulation[J].Earth Science(Journal of China University of Geosciences),2007,32(2):241-246.
[8]HUNT J M.The generation and migration of petroleumfrom abnormal pressure fluid compart ment[J].AAPG Bulletin,1990,74(1):1-12.
[9]M RQUEZ X M,MOUNTJOY E W.Microfractures due to over-pressures caused by thermal crackingin well sealed upperDevonian reservoirs,deep Alberta basin[J].AAPG Bulletin,1996,80(4):571-587.
[10]包友书,张林晔,张守春,等.东营凹陷深部异常高压与岩性油气藏的形成[J].新疆石油地质,2008,29(5):585-587.BAO You-shu,ZHANG Lin-hua,ZHANG Shou-chun,et al.The deep abnormal pressure and the formation of lithologicreservoir in Dongying sag[J].Xinjiang Petroleum Geology,2008,29(5):585-587.
[11]朱光有,金强,戴金星,等.东营凹陷油气成藏期次及其分布规律研究[J].石油与天然气地质,2004,25(2):209-215.ZHU Guang-you,JIN Qiang,DAI Jin-xing,et al.Astudy on periods of hydrocarbon accumulation and distribution patternof oil and gas pools in Dongying depression[J].Oil&Gas Geology,2004,25(2):209-215.
[12]周立宏,刘国芳.利用泥岩声波时差估算地层压力[J].石油实验地质,1996,18(2):195-199.ZHOU Li-hong,LI U Guo-fang.Formation pressure esti mated by interval transit ti me of mudstones[J].Experi mentalPetroleum Geology,1996,18(2):195-199.
[13]何新贞.东营凹陷压力系统特征分析[J].油气地质与采收率,2008,9(4):21-23.HE Xin-zhen.Analysis on the features of pressure systemin Dongying sag[J].Oil&Gas Recovery Efficiency,2008,9(4):21-23.
[14]EHRENBERG S N,NADEAU P H.Sandstone vs.carbonate petroleumreservoirs:Aglobal perspective on porosity-depthand porosity-permeability relationships[J].AAPG Bulletin,2005,89(4):435-445.
[2]侯明才,田景春,陈洪德,等.东营凹陷牛庄洼陷沙三中段浊积扇特征研究[J].成都理工学院学报,2002,29(5):506-510.HOU Ming-cai,TIANJing-chun,CHEN Hong-de,et al.Turbidite fan characters of the intermediate Section of Member 3of Shahejie Formationin Niuzhuang depression of Dongying area[J].Journal of Chengdu University of Technology,2002,29(5):506-510.
[3]漆滨汶,林春明,邱桂强,等.山东省牛庄洼陷古近系沙河街组沙三中亚段储集层成岩作用研究[J].沉积学报,2007,25(1):99-107.QI Bin-wen,LIN Chun-ming,QI U Gui-qiang,et al.Reservoir diagenesis of the intermediate Sectionin Member 3 of ShahejieFormation(Paleogene)in Niuzhuang subsag,Shandong Province[J].Acta Sedi mentologica Sinica,2007,25(1):99-107.
[4]BRADLEYJ S,POWLEY D E.Pressure compart ments in sedi mentary basin:Areview[M]//AAPG Memoir 61:Basin Com-part ment and Seal.Tulsa:the American Association of Petroleum Geologists,1994,61:3-26.
[5]陈宝宁,王宁.异常压力研究进展与方法实践[J].油气地质与采收率,2001,8(1):35-37.CHEN Bao-ning,WANG Ning.Research advance and method practice of anomalous fluid pressure[J].Oil&Gas RecoveryEfficiency,2001,8(1):35-37.
[6]高永进,邱桂强,陈冬霞,等.牛庄洼陷岩性油藏含油气性及主控因素[J].石油与天然气地质,2004,25(3):284-299.GAO Yong-jin,QI U Gui-qiang,CHEN Dong-xia,et al.Oil/gas shows in lithologic reservoirs in Niuzhuang sag and theirmain controlling factors[J].Oil&Gas Geology,2004,25(3):284-299.
[7]鲍晓欢,郝芳,方勇.东营凹陷牛庄洼陷地层压力演化及其成藏意义[J].地球科学(中国地质大学学报),2007,32(2):241-246.BAO Xiao-huan,HAO Fang,FANG Yong.Evolution of geopressure field in Niuzhuang sag in Dongying depression and itseffect on petroleumaccumulation[J].Earth Science(Journal of China University of Geosciences),2007,32(2):241-246.
[8]HUNT J M.The generation and migration of petroleumfrom abnormal pressure fluid compart ment[J].AAPG Bulletin,1990,74(1):1-12.
[9]M RQUEZ X M,MOUNTJOY E W.Microfractures due to over-pressures caused by thermal crackingin well sealed upperDevonian reservoirs,deep Alberta basin[J].AAPG Bulletin,1996,80(4):571-587.
[10]包友书,张林晔,张守春,等.东营凹陷深部异常高压与岩性油气藏的形成[J].新疆石油地质,2008,29(5):585-587.BAO You-shu,ZHANG Lin-hua,ZHANG Shou-chun,et al.The deep abnormal pressure and the formation of lithologicreservoir in Dongying sag[J].Xinjiang Petroleum Geology,2008,29(5):585-587.
[11]朱光有,金强,戴金星,等.东营凹陷油气成藏期次及其分布规律研究[J].石油与天然气地质,2004,25(2):209-215.ZHU Guang-you,JIN Qiang,DAI Jin-xing,et al.Astudy on periods of hydrocarbon accumulation and distribution patternof oil and gas pools in Dongying depression[J].Oil&Gas Geology,2004,25(2):209-215.
[12]周立宏,刘国芳.利用泥岩声波时差估算地层压力[J].石油实验地质,1996,18(2):195-199.ZHOU Li-hong,LI U Guo-fang.Formation pressure esti mated by interval transit ti me of mudstones[J].Experi mentalPetroleum Geology,1996,18(2):195-199.
[13]何新贞.东营凹陷压力系统特征分析[J].油气地质与采收率,2008,9(4):21-23.HE Xin-zhen.Analysis on the features of pressure systemin Dongying sag[J].Oil&Gas Recovery Efficiency,2008,9(4):21-23.
[14]EHRENBERG S N,NADEAU P H.Sandstone vs.carbonate petroleumreservoirs:Aglobal perspective on porosity-depthand porosity-permeability relationships[J].AAPG Bulletin,2005,89(4):435-445.
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