松辽盆地齐家古龙凹陷—三肇凹陷中浅层异常压力系统特征
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摘要
对研究区千余口单井建立声波时差压实曲线,利用等效深度法计算泥岩超压值,结合DST和RFT实测资料以及地震资料,综合考虑研究区沉积及构造特点,最终揭示了松辽盆地齐家古龙凹陷—三肇凹陷中浅层地层存在4套压力体系,即嫩二段以上的常压体系,嫩江组一段、二段弱超压体系,姚家组常压、低压和弱超压并存体系以及青山口组超压体系。不同层位异常压力分布范围和规模不同,其中青一段最为广泛。产生异常压力的原因复杂:超压形成主要受泥岩欠压实和油气生成控制,嫩江组末期的构造抬升作用是研究区产生异常低压的主要原因,而超压流体流动导致的压力传导作用为压力的再分布提供了有力条件。
Based on abundant logging data,combined with DST,RFT data and rare sesmic information,comprehensively considering the feature of deposition and structure,the research establishes more than one thousand acoustic interval transit time curves and fluid pressures are calculated by equivalent depth method and the characteristics of abnormal pressure distribution are revealed in study area.The results indicate: 1) Overpressure is prevalent in study area,and Qijiagulong depression,which is one of the most important oil-bearing depression,has the most extensive area and largest overpressure value.2) Vertically,there are four pressure systems.The formation above K2n2 is normal pressure,and K2n2-K2n1 and K2qn formation develop overpressure.However,K2y formation,which is between K2n and K2qn,simultaneously has normal and abnormal pressure.3) More than one mechanism should be responsible for abnormal pressure genesis.Disequilibrium compaction and hydrocarbon generation are the main causes of overpressure.Tectonic uplift during the end of Nenjiang Formation leads to the abnormal low pressure in Yaojia Formation.Eventually,transit pressure causes by fluid flow redistributes the abnormal pressure.
Based on abundant logging data,combined with DST,RFT data and rare sesmic information,comprehensively considering the feature of deposition and structure,the research establishes more than one thousand acoustic interval transit time curves and fluid pressures are calculated by equivalent depth method and the characteristics of abnormal pressure distribution are revealed in study area.The results indicate: 1) Overpressure is prevalent in study area,and Qijiagulong depression,which is one of the most important oil-bearing depression,has the most extensive area and largest overpressure value.2) Vertically,there are four pressure systems.The formation above K2n2 is normal pressure,and K2n2-K2n1 and K2qn formation develop overpressure.However,K2y formation,which is between K2n and K2qn,simultaneously has normal and abnormal pressure.3) More than one mechanism should be responsible for abnormal pressure genesis.Disequilibrium compaction and hydrocarbon generation are the main causes of overpressure.Tectonic uplift during the end of Nenjiang Formation leads to the abnormal low pressure in Yaojia Formation.Eventually,transit pressure causes by fluid flow redistributes the abnormal pressure.
引文
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[12]迟元林,萧德铭,殷进垠.松辽盆地三肇地区上生下储“注入式”成藏机制[J].地质学报,2000,74(4):371-377.Chi Yuan-lin,Xiao De-ming,Yin Jin-yin.The InjectionPattern of Oil and Gas Migration and Accumulation inthe Sanzhao Area of Songliao Basin[J].Acta GeologicaSinica,2000,74(4):371-377.
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[14]付广,王有功,苏玉平.古龙凹陷青山口组超压源岩天然气扩散速度演化史[J].吉林大学学报:地球科学版,2007,37(1):91-97.Fu Guang,Wang You-gong,Su Yu-ping.EvolutionHistory of Gas Diffusion Velocity from OverpressuredSource Rock of Qingshankou Group(K1qn)in GulongSag[J].Journal of Jilin University:Earth Science Edi-tion,2007,37(1):91-97.
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[16]高瑞祺,蔡希源.松辽盆地油气田形成条件与分布规律[M].北京:石油工业出版社,1997.Gao Rui-qi,Cai Xi-yuan.The Reservoir DistributionRules and Formation Condition of Songliao Basin[M].Beijing:Petroleum Industry Press,1997.
[17]赵健.松辽盆地西斜坡泥岩地层压实规律[J].石油与天然气地质,2010,31(4):486-492.Zhao Jian.Laws of Mudstone Compaction on the WestSlope of the Songliao Basin[J].Oil and Gas Geology,2010,31(4):486-492.
[18]解习农,李思田,刘晓峰.异常压力盆地流体动力学[M].武汉:中国地质大学出版社,2006:34-36.Jie Xi-nong,Li Si-tian,Liu Xiao-feng.Basin FluidDynamics in Abnormally Pressured Environments[M].Wuhan:China Unversity of Geoscience Press,2006:34-36.
[19]Hermanrud C,Wensaas L,Teige G M G,et al.ShalePorosities from Well Logs on Haltenbanken(OffshoreMid-Norway)Show No Influence of Overpressuring[C]//Law B E,Ulmishek G F,Slavin V I.AbnormalPressures in Hydrocarbon Environments:AAPG Memoir70,in Golden,Colorado.Tulsa,1998:65-85.
[20]何生,何治亮,杨智,等.准噶尔盆地腹部侏罗系超压特征和测井响应以及成因[J].地球科学:中国地质大学学报,2009,34(3):457-470.He Sheng,He Zhi-liang,Yang Zhi,et al.Characteris-tics,Well-Log Responses and Mechanisms of Overpres-sures Within the Jurassic Formation in the Central Partof Junggar Basin[J].Earth Science:Journal of ChinaUniversity of Geosciences,2009,34(3):457-470.
[21]Hubbert,Rubey.Role of Fluid Pressures in Mechanicsof Overthrust Faulting[J].Geological Society of AmericaBulletin,1959,70:115-206.
[22]Magara K.Compaction and Migration of Fluids in Mio-cene Mudstone,Nagaoka Plain,Japan[J].AAPG Bul-letin,1968,52:2466-2501.
[23]张发强,王震亮,吴亚生,等.消除影响压实趋势线地质因素的方法:以莺歌海盆地为例[J].沉积学报,2002,20(2):326-332.Zhang Fa-qiang,Wang Zhen-liang,Wu Ya-sheng,etal.A Method for Eliminating Geology Factors of Affec-ting Compaction Trendline:An Example from YinggehaiBasin[J].Acta Sedimentologica Sinica,2002,20(2):326-332.
[24]杨万里,高瑞祺,郭庆福,等.松辽盆地陆相油气生成、运移和聚集[M].哈尔滨:黑龙江科学技术出版社,1985.Yang Wan-li,Gao Rui-qi,Guo Qing-fu,et al.Originand Evolution of Hydrodynamics and the Migration,Ac-cumulation of Petroleum in Continental Petroliferous Se-dimentary Basins[M].Harbin:Heilongjiang Scienceand Technology Press,1985.
[25]唐振兴,苗洪波,李爱民,等.松辽盆地南部嫩江组—泉四段油气运移特征[J].大庆石油地质与开发,2007,26(6):40-46.Tang Zhen-xing,Miao Hong-bo,Li Ai-min,et al.Hydrocarbon Migration Characteristics of Nenjiang For-mation Member 4 of Quantou Formation in SouthernSongliao Basin[J].Petroleum Geology&Oilfield Devel-opment in Daqing,2007,26(6):40-46.
[26]王宏语,康西栋,李军,等.松辽盆地徐家围子地区深层异常压力分布及其成因[J].吉林大学学报:地球科学版,2002,32(1):39-42.Wang Hong-yu,Kang Xi-dong,Li Jun,et al.The Dis-tribution of Anomalous Pressure in the Deep Zone of Xu-jiaweizi,Songliao Basin and Its Genesis[J].Journal ofJilin University:Earth Science Edition,2002,32(1):39-42.
[2]Karsten Michael,Stefan Bachu.Fluids and Pressure Dis-tributions in the Foreland-Basin Succession in the West-Central Part of the Alberta Basin,Canada:Evidence forPermeability Barriers and Hydrocarbon Generation andMigration[J].AAPG,2001,85(7):1231-1252.
[3]Xie Xinong,Jiao Jiujiu,Tang Zhonghua,et al.Evolutionof Abnormally Low Pressure and Its Implications for theHydrocarbon System in the Southeast Uplift Zone ofSongliao Basin,China[J].AAPG,2003,87(1):99-119.
[4]解习农,焦赳赳,熊海河.松辽盆地十屋断陷异常压力体系及其成因机制[J].地球科学:中国地质大学学报,2003,28(1):61-65.Xie Xi-nong,Jiao Jiu-jiu,Xiong Hai-he.UnderpressureSystem and Forming Mechanism in the Shiwu Depressionof Songliao Basin[J].Earth Science:Journal of ChinaUniversity of Geoscience,2003,28(1):61-65.
[5]Hunt J M.Generation and Migration of Petroleum fromAbnormally Pressured Fluid Compartments[J].AAPGBulletin,1990,74:1-12.
[6]Jiao J J,Zheng C.Abnormal fluid Pressures Caused byDeposition and Erosion of Sedimentary Basins[J].Jour-nal of Hydrology,1998,204(1/2/3/4):124-137.
[7]向才富,冯志强,吴河勇,等.松辽盆地异常压力系统及其形成原因探讨[J].地质学报,2006,80(11):1752-1759.Xiang Cai-fu,Feng Zhi-qiang,Wu He-yong,et al.Three Abnormal Pressure Systems Developed in theSongliao Basin,Northeast China and Their Genesis[J].Acta Geologica Sinica,2006,80(11):1752-1759.
[8]Bradley J S,Powley D E.Pressure Compartments in Se-dimentary Basins:A Review[J].AAPG Memoir,1995,61:3-26.
[9]Serebryakov V A,Chilingar G V.Abnormal Pressure Re-gime in the Former USSR Petroleum Basins[J].Journalof Petroleum Science Engineering,1995,13:65-74.
[10]张文宾,姜传金,徐宏.松辽盆地北部储层压力场特征与油、气、水的关系[J].大庆石油勘探与开发,1994,13(1):11-13.Zhang Wen-bin,Jiang Chuan-jin,Xu Hong.Characte-ristics of Reservoir Pressure Fields and Its Relationshipwith Oil,Gas and Water in Northern Songliao Basin[J].Petroleum Geology&Oilfield Development inDaqing,1994,13(1):11-13.
[11]付广,庞雄奇,姜振学,等.欠压实地层古地层压力恢复的统计模拟法及其在松辽盆地中的应用[J].沉积学报,1996,14(1):69-79.Fu Guang,Pang Xiong-qi,Jiang Zhen-xue,et al.TheStatistics Modeling Method of Recovering the AncientPressures of Abnormal Campaction Strata and Its Appli-cation to Songliao Basin[J].Acta Sedimentologica Si-nica,1996,14(1):69-79.
[12]迟元林,萧德铭,殷进垠.松辽盆地三肇地区上生下储“注入式”成藏机制[J].地质学报,2000,74(4):371-377.Chi Yuan-lin,Xiao De-ming,Yin Jin-yin.The InjectionPattern of Oil and Gas Migration and Accumulation inthe Sanzhao Area of Songliao Basin[J].Acta GeologicaSinica,2000,74(4):371-377.
[13]付广,孟庆芬.松辽盆地北部异常高压在油气成藏与保存中的作用[J].油气地质与采收率,2003,10(1):23-25.Fu Guang,Meng Qing-fen.Role of Abnormal HighPressure in the Formation and Preservation of Oil(Gas)Reservoirs in the North of Songliao Basin[J].Oil&GasRecovery Tecnology,2003,10(1):23-25.
[14]付广,王有功,苏玉平.古龙凹陷青山口组超压源岩天然气扩散速度演化史[J].吉林大学学报:地球科学版,2007,37(1):91-97.Fu Guang,Wang You-gong,Su Yu-ping.EvolutionHistory of Gas Diffusion Velocity from OverpressuredSource Rock of Qingshankou Group(K1qn)in GulongSag[J].Journal of Jilin University:Earth Science Edi-tion,2007,37(1):91-97.
[15]王志武,杨继良,高瑞祺.中国石油地质志:卷二[M].北京,石油工业出版社,1993.Wang Zhi-wu,Yang Ji-liang,Gao Rui-qi.PetroleumGeology of China:Volume 2[M].Beijing:PetroleumIndustry Press,1993.
[16]高瑞祺,蔡希源.松辽盆地油气田形成条件与分布规律[M].北京:石油工业出版社,1997.Gao Rui-qi,Cai Xi-yuan.The Reservoir DistributionRules and Formation Condition of Songliao Basin[M].Beijing:Petroleum Industry Press,1997.
[17]赵健.松辽盆地西斜坡泥岩地层压实规律[J].石油与天然气地质,2010,31(4):486-492.Zhao Jian.Laws of Mudstone Compaction on the WestSlope of the Songliao Basin[J].Oil and Gas Geology,2010,31(4):486-492.
[18]解习农,李思田,刘晓峰.异常压力盆地流体动力学[M].武汉:中国地质大学出版社,2006:34-36.Jie Xi-nong,Li Si-tian,Liu Xiao-feng.Basin FluidDynamics in Abnormally Pressured Environments[M].Wuhan:China Unversity of Geoscience Press,2006:34-36.
[19]Hermanrud C,Wensaas L,Teige G M G,et al.ShalePorosities from Well Logs on Haltenbanken(OffshoreMid-Norway)Show No Influence of Overpressuring[C]//Law B E,Ulmishek G F,Slavin V I.AbnormalPressures in Hydrocarbon Environments:AAPG Memoir70,in Golden,Colorado.Tulsa,1998:65-85.
[20]何生,何治亮,杨智,等.准噶尔盆地腹部侏罗系超压特征和测井响应以及成因[J].地球科学:中国地质大学学报,2009,34(3):457-470.He Sheng,He Zhi-liang,Yang Zhi,et al.Characteris-tics,Well-Log Responses and Mechanisms of Overpres-sures Within the Jurassic Formation in the Central Partof Junggar Basin[J].Earth Science:Journal of ChinaUniversity of Geosciences,2009,34(3):457-470.
[21]Hubbert,Rubey.Role of Fluid Pressures in Mechanicsof Overthrust Faulting[J].Geological Society of AmericaBulletin,1959,70:115-206.
[22]Magara K.Compaction and Migration of Fluids in Mio-cene Mudstone,Nagaoka Plain,Japan[J].AAPG Bul-letin,1968,52:2466-2501.
[23]张发强,王震亮,吴亚生,等.消除影响压实趋势线地质因素的方法:以莺歌海盆地为例[J].沉积学报,2002,20(2):326-332.Zhang Fa-qiang,Wang Zhen-liang,Wu Ya-sheng,etal.A Method for Eliminating Geology Factors of Affec-ting Compaction Trendline:An Example from YinggehaiBasin[J].Acta Sedimentologica Sinica,2002,20(2):326-332.
[24]杨万里,高瑞祺,郭庆福,等.松辽盆地陆相油气生成、运移和聚集[M].哈尔滨:黑龙江科学技术出版社,1985.Yang Wan-li,Gao Rui-qi,Guo Qing-fu,et al.Originand Evolution of Hydrodynamics and the Migration,Ac-cumulation of Petroleum in Continental Petroliferous Se-dimentary Basins[M].Harbin:Heilongjiang Scienceand Technology Press,1985.
[25]唐振兴,苗洪波,李爱民,等.松辽盆地南部嫩江组—泉四段油气运移特征[J].大庆石油地质与开发,2007,26(6):40-46.Tang Zhen-xing,Miao Hong-bo,Li Ai-min,et al.Hydrocarbon Migration Characteristics of Nenjiang For-mation Member 4 of Quantou Formation in SouthernSongliao Basin[J].Petroleum Geology&Oilfield Devel-opment in Daqing,2007,26(6):40-46.
[26]王宏语,康西栋,李军,等.松辽盆地徐家围子地区深层异常压力分布及其成因[J].吉林大学学报:地球科学版,2002,32(1):39-42.Wang Hong-yu,Kang Xi-dong,Li Jun,et al.The Dis-tribution of Anomalous Pressure in the Deep Zone of Xu-jiaweizi,Songliao Basin and Its Genesis[J].Journal ofJilin University:Earth Science Edition,2002,32(1):39-42.
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