辽西低凸起东营组储集层特征与发育控制因素
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摘要
辽西低凸起有较大的油气勘探潜力,是未来油气勘探的有利区。针对该区地质、地层和层序方面等认识不清的问题,应用层序地层学、物源体系分析和沉积岩石学等方法,建立了层序地层格架,探讨了主要目的层东营组的沉积体系展布规律。通过构造-层序地层和沉积相开展整体和系统性研究。根据体系域不同的地质特征和各体系域界面不同的地震反射特征变化,划分出东二层序中低位体系域、湖泛体系域和高位体系域。在此基础上对层序格架内沉积相类型及其有利砂体展布和分布进行了深入的探讨。研究区主要发育三角洲、湖泊和湖底扇等沉积体系。分析层序、构造活动和沉积环境,不同体系域沉积体系域发育特点和有利砂体展布规律,在此基础上综合储层物性特征、有机地球化学特征,指出了研究区下一步有利的油气藏勘探方向。
Liaoxi salient has great potential for oil and gas exploration, and it is a favorable area for oil and gas exploration in the future. A view of the unclear understanding of geology, stratigraphy and sequence in this area, the sequence stratigraphic framework was established by using the methods of sequence stratigraphy, sedimentary petrology and provenance system analysis,and the distribution law of the sedimentary system of the main target sequence Dongying formation was discussed. Through structural sequence stratigraphy and sedimentary facies, a comprehensive and systematic study is carried out. According to the different geological characteristics of the system domain and the seismic reflection characteristics of different system interfaces, the middle and lower sequence system tracts, the Lake flood system tract and the high system tract of the eastern two sequence are divided. On this basis, the types of sedimentary facies and the distribution and distribution of favorable sand bodies in sequence framework are discussed. The delta, lake and sublacustrine fan systems are mainly developed in the study area. and the distribution regularity of favorable sand bodies, the favorable exploration direction for oil and gas reservoirs in the study area is pointed out by synthesizing the physical and organic geochemical characteristics of reservoirs. Based on the analysis of sequence, tectonic activity and sedimentary environment, the development characteristics of sedimentary system tracts in different system tracts and the distribution regularity of favorable sand bodies, the favorable exploration direction for oil and gas reservoirs in the study area is pointed out by synthesizing the physical and organic geochemical characteristics of reservoirs.
Liaoxi salient has great potential for oil and gas exploration, and it is a favorable area for oil and gas exploration in the future. A view of the unclear understanding of geology, stratigraphy and sequence in this area, the sequence stratigraphic framework was established by using the methods of sequence stratigraphy, sedimentary petrology and provenance system analysis,and the distribution law of the sedimentary system of the main target sequence Dongying formation was discussed. Through structural sequence stratigraphy and sedimentary facies, a comprehensive and systematic study is carried out. According to the different geological characteristics of the system domain and the seismic reflection characteristics of different system interfaces, the middle and lower sequence system tracts, the Lake flood system tract and the high system tract of the eastern two sequence are divided. On this basis, the types of sedimentary facies and the distribution and distribution of favorable sand bodies in sequence framework are discussed. The delta, lake and sublacustrine fan systems are mainly developed in the study area. and the distribution regularity of favorable sand bodies, the favorable exploration direction for oil and gas reservoirs in the study area is pointed out by synthesizing the physical and organic geochemical characteristics of reservoirs. Based on the analysis of sequence, tectonic activity and sedimentary environment, the development characteristics of sedimentary system tracts in different system tracts and the distribution regularity of favorable sand bodies, the favorable exploration direction for oil and gas reservoirs in the study area is pointed out by synthesizing the physical and organic geochemical characteristics of reservoirs.
引文
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[8]张俊武,邹华耀,李平平,等.含烃盐水包裹体PVT模拟新方法及其在气藏古压力恢复中的应用[J].石油实验地质,2015,37(1):102-108.Zhang J W,Zhou H Y,Li P P,et al.A new PVT simulation method for hydrocarbon-containing inclusions and its application to reconstructing paleo-pressure of gas reservoirs[J].Petroleum Geology&Experiment,2015,37(1):102-108.
[9]苗顺德,李秋芬,欧阳诚.黄骅坳陷古近系层序地层格架特征及模式研究[J].中国地质,2008,35(2):256-263.Miao S D,Li Q F,Ou Y C.Paleogene sequence stratigraphic framework and model in the Huanghua depression[J].Geology in China,2008,35(2):256-263.
[10]赖维成,宋章强,周心怀,等.地质-地震储层预测技术及其在渤海海域的应用[J].现代地质,2009,23(5):933-939.Lai W C,Song Z Q,Zhou X H,et al.Geology seismic technique of reservoir prediction and its application in Bohai offshore area[J].Geoscience,2009,23(5):933-939.
[11] Cross T A.Stratigraphie controls on reservoir attributes in continental strata[J].Geoscience,2000,7(4):322-350.
[12]姜辉.浊流沉积的动力学机制与响应[J].石油与天然气地质,2010,31(4):428-435.Jiang H.Dynamical mechanism and depositional responses of turbidity current sedimentation[J].Oil&Gas Geology,2010,31(4):428-435.
[13]卓勤功.断陷盆地注陷带岩性油气藏成藏机理及运聚模式[J].石油学报,2006,27(6):19-23.Zhuo Q G.Reservoir-forming mechanism and mig-ation-accirmulation mode of lithological pool in deep sub-depression of riftsubsidence basin[J].Acta Petrolei Sinica,2006,27(6);19-23.
[14]王晨杰,黄晓波,郭涛,等.高精度古地貌恢复技术及应用——以辽西凸起南段东营组二段下段为例[J].现代地质,2017,31(6):1214-1221.Wang C J,Huang X B,Guo T,et al.High precision paleotopography restoration technology and its application:Taking the second member of Dongying strata in the south of Liaoxi uplift as an example[J].Geoscience,2017,31(6):1214-1221.
[15]江尚昆,吴昊明,曾金昌,等.辽西低凸起中段潜山油气差异富集及主控因素[J].特种油气藏,2016,23(6):55-59.Jiang S K,Wu H M,Zeng J C,et al.Hydrocarbon difference enrichment and main-controlling factors of buried-hill reservoir in the central of Liaoxi low-salient[J].Special Oil&Gas Reservoirs,2016,23(6):55-59.
[16]黄馨瑶,魏鹏.辽西低凸起中南段古近系东营组层序与沉积体系演化特征[J].科技创新导报,2016,13(26):67-68.Huang X Y,Wei P. The research of sequence stratigraphy of the paleogene Dongying formation and depositional system evolution characteristics in the central-south Liaoxi salient[J].Science and Technology Innovotion Herald,2016,13(26):67-68.
[17]陈建波,潘玲黎,童凯军,等.辽西低凸起太古宇变质岩潜山储层控制因素研究[J].石油地质与工程,2016,30(4):30-35.Chen J B,Pan L L,Tong K J,et al. Controlling factors analysis of archaezoic metamorphic buried hill reservoirs in Liaoxi low salient[J].Petroleum Geology and Engineering,2016,30(4):30-35.
[2]周心怀,刘震,李潍莲.辽东湾断陷油气成藏机理[M].北京:石油工业出版社,2009:80-89.
[3]王祥,王应斌,吕修祥,等.渤海海域辽东湾坳陷油气成藏条件与分布规律[J].石油与天然气地质,2011,32(3):342-351.Wang X,Wang Y B,LüX X,et al. Hydrocarbon accumulation conditions and distribution patterns in the Liaodong bay depression,the Bohai sea[J].Oil&Gas Geology,2011,32(3):342-351.
[4]马文强,邓亚仁,任战利.吴起-志丹地区致密油成藏主控因素研究[J].石油化工高等学校学报,2016,29(6):66-71.Ma W Q,Deng Y R,Ren Z L. Main control factors of tight oil accumulation in Wuqi and Zhidan area[J]. Journal of Petrochemical Universities,2016,29(6):66-71.
[5]李潍莲,刘震,刘俊榜,等.辽东湾地区辽西低凸起油气田成藏地质条件的差异[J].石油与天然气地质,2010,31(5):664-670.Li W L,Liu Z,Liu J B,et al.Differences of geological conditions of hydrocarbon accumalation among fields in the Liaoxi low uplipt the Liaodong gay[J].Oil&Gas Geology,2010,31(5):664-670.
[6] Aplin A C,Larter S R,Bigge M A,et al. PVTX history of the North Sea’s Judy oillield[J]. Journal of Geochemical Exploration,2000,69-70:641-644.
[7]麻伟娇,王峰,宋明星,等.不整合面上底砾岩控制油气运聚的流体证据[J].特种油气藏,2017,24(1):81-86.Ma W J,Wang F,Song M X,et al.Fluid evidences for control of hydrocarbon migration by basal granule on unconformity surface[J].Special Oil&Gas Reservoirs,2017,24(1):81-86.
[8]张俊武,邹华耀,李平平,等.含烃盐水包裹体PVT模拟新方法及其在气藏古压力恢复中的应用[J].石油实验地质,2015,37(1):102-108.Zhang J W,Zhou H Y,Li P P,et al.A new PVT simulation method for hydrocarbon-containing inclusions and its application to reconstructing paleo-pressure of gas reservoirs[J].Petroleum Geology&Experiment,2015,37(1):102-108.
[9]苗顺德,李秋芬,欧阳诚.黄骅坳陷古近系层序地层格架特征及模式研究[J].中国地质,2008,35(2):256-263.Miao S D,Li Q F,Ou Y C.Paleogene sequence stratigraphic framework and model in the Huanghua depression[J].Geology in China,2008,35(2):256-263.
[10]赖维成,宋章强,周心怀,等.地质-地震储层预测技术及其在渤海海域的应用[J].现代地质,2009,23(5):933-939.Lai W C,Song Z Q,Zhou X H,et al.Geology seismic technique of reservoir prediction and its application in Bohai offshore area[J].Geoscience,2009,23(5):933-939.
[11] Cross T A.Stratigraphie controls on reservoir attributes in continental strata[J].Geoscience,2000,7(4):322-350.
[12]姜辉.浊流沉积的动力学机制与响应[J].石油与天然气地质,2010,31(4):428-435.Jiang H.Dynamical mechanism and depositional responses of turbidity current sedimentation[J].Oil&Gas Geology,2010,31(4):428-435.
[13]卓勤功.断陷盆地注陷带岩性油气藏成藏机理及运聚模式[J].石油学报,2006,27(6):19-23.Zhuo Q G.Reservoir-forming mechanism and mig-ation-accirmulation mode of lithological pool in deep sub-depression of riftsubsidence basin[J].Acta Petrolei Sinica,2006,27(6);19-23.
[14]王晨杰,黄晓波,郭涛,等.高精度古地貌恢复技术及应用——以辽西凸起南段东营组二段下段为例[J].现代地质,2017,31(6):1214-1221.Wang C J,Huang X B,Guo T,et al.High precision paleotopography restoration technology and its application:Taking the second member of Dongying strata in the south of Liaoxi uplift as an example[J].Geoscience,2017,31(6):1214-1221.
[15]江尚昆,吴昊明,曾金昌,等.辽西低凸起中段潜山油气差异富集及主控因素[J].特种油气藏,2016,23(6):55-59.Jiang S K,Wu H M,Zeng J C,et al.Hydrocarbon difference enrichment and main-controlling factors of buried-hill reservoir in the central of Liaoxi low-salient[J].Special Oil&Gas Reservoirs,2016,23(6):55-59.
[16]黄馨瑶,魏鹏.辽西低凸起中南段古近系东营组层序与沉积体系演化特征[J].科技创新导报,2016,13(26):67-68.Huang X Y,Wei P. The research of sequence stratigraphy of the paleogene Dongying formation and depositional system evolution characteristics in the central-south Liaoxi salient[J].Science and Technology Innovotion Herald,2016,13(26):67-68.
[17]陈建波,潘玲黎,童凯军,等.辽西低凸起太古宇变质岩潜山储层控制因素研究[J].石油地质与工程,2016,30(4):30-35.Chen J B,Pan L L,Tong K J,et al. Controlling factors analysis of archaezoic metamorphic buried hill reservoirs in Liaoxi low salient[J].Petroleum Geology and Engineering,2016,30(4):30-35.