伊通盆地莫里青老区双阳组—奢岭组储层精细描述
摘要
莫里青断陷岩性油气藏发育,非均质性强,油气成藏规律不清,制约了油气勘探与开发。系统开展砂组及主要小层的沉积及成藏规律研究,建立该区砂体沉积、叠置及演化,可以从成因机制上揭示有利储层与油气藏发育规律,为下步油气开发提供科学依据。应用层序地层及沉积体系新理论,建立沉积模式,系统开展老莫里青地区双阳组-奢岭组砂组及主要小层的沉积微相研究,查明砂体的展布特征,探寻油气藏的分布规律。
在立体空间的连井沉积断面分析基础上,以伊18井为基准,系统对双阳组的组、段分层数据进行了统层对比,并按照沉积旋回特征将双一段划分为6个砂组,将其Ⅲ～Ⅵ砂组划分为12小层。通过岩心、测井、地震等资料的综合分析,在本区双阳组一段识别出了湖泊相、扇三角洲相和湖底扇相3种沉积相、7种沉积亚相、15种沉积微相,建立了区内沉积相模式图,恢复了12个主要小层的沉积微相带展布特征。研究表明研究区东南部主要发育扇三角洲相,南部发育较小规模的扇三角洲相,西北部发育小规模的湖底扇,中部是水下分流河道和湖底扇的主要发育区,整体构成了湖泊-扇三角洲-湖底扇的沉积体系组合。
双一段油气主要富集于扇三角洲前缘的水下分流河道及湖底扇的中扇区带,其次见于扇三角洲前缘的席状砂和河口坝。另外,在盆地边缘的滨浅湖沉积相带也见有油气分布;断层和岩性是控制油气富集的主要因素,研究区内的油气藏类型主要为断层-岩性复合油气藏。本文还预测了4个主要有利油气分布区。
The lithologic reservoirs develops in Moliqing fault depression, the heterogeneity is strong, the oil-gas reservoir-forming rule is not clear, it restricts the oil and gas exploration and development. Systematic study on the group and the deposition of main layer and the hydrocarbon accumulation, establish the deposition, superposition and evolution of the sand bodies in this area, it can review the patterns of being propitious to the development of reservoirs by the genetic mechanism, to provide the scientific evidence for the continue drill for gas and oil. Applying the sequence stratigraphy and sedimentary system new theory, establish sedimentary pattern, systematic study on the group and the deposition of main layer and the sedimentary microfacies of Shuangyang and Sheling Group in Moliqing field, find out the characteristic of distribution of sandstone bodies and the distribution law of reservoirs.
According to the analysis of three-dimensional sedimentary section and the 18 wells data, the group and members of Shuangyang are systematically contrasted, and the first member of the Shuangyang group (S1) is divided into six sand groups based on the characteristics of sedimentary cycle, itsⅢ-Ⅵsand group is divided into 12 fine layers. Through the comprehensive analysis on core, logs and seismic data, 3 types sedimentary facies of lacustrine facies, fan delta facies and sublacustrine fan facies, 7 types of subfacies, 15 types of microfacies in this region of Shuangyang group S1 are identified, the mode of sedimentary facies in the area is set up and distribution characteristics of sedimentary microfaces in the 12 main fine layers are resumed. Fan delta facies is mainly developed in the south-east , a small fan delta developed in south, a small-scale sublacustrine fan facies developed in north-west, underwater distributary channel and sublacustrine fan developed in the center of the area, which constitute sedimentary system of lacustrine facies-fan delta facies-sublacustrine fan. This rock type consists of lithic arkose primarily and feldspathic litharenite and subarkose takes second place.
oil and gas in the S1 are mainly enriching in underwater distributary channel of the fan delta front and the middle of the sublake-fan, then they are found in the sheet sand and estuary dam of the fan delta front. In addition, hydrocarbons occur in shore-shallow lacustrine facies to edge of the basin; Fault and lithology are the important factors that controlled oil-gas migration and accumulation. The reservoir in the area is mainly fault-lithological complex reservoir. 4 favorable oil and gas targets are also predicted in the paper.
在立体空间的连井沉积断面分析基础上,以伊18井为基准,系统对双阳组的组、段分层数据进行了统层对比,并按照沉积旋回特征将双一段划分为6个砂组,将其Ⅲ～Ⅵ砂组划分为12小层。通过岩心、测井、地震等资料的综合分析,在本区双阳组一段识别出了湖泊相、扇三角洲相和湖底扇相3种沉积相、7种沉积亚相、15种沉积微相,建立了区内沉积相模式图,恢复了12个主要小层的沉积微相带展布特征。研究表明研究区东南部主要发育扇三角洲相,南部发育较小规模的扇三角洲相,西北部发育小规模的湖底扇,中部是水下分流河道和湖底扇的主要发育区,整体构成了湖泊-扇三角洲-湖底扇的沉积体系组合。
双一段油气主要富集于扇三角洲前缘的水下分流河道及湖底扇的中扇区带,其次见于扇三角洲前缘的席状砂和河口坝。另外,在盆地边缘的滨浅湖沉积相带也见有油气分布;断层和岩性是控制油气富集的主要因素,研究区内的油气藏类型主要为断层-岩性复合油气藏。本文还预测了4个主要有利油气分布区。
The lithologic reservoirs develops in Moliqing fault depression, the heterogeneity is strong, the oil-gas reservoir-forming rule is not clear, it restricts the oil and gas exploration and development. Systematic study on the group and the deposition of main layer and the hydrocarbon accumulation, establish the deposition, superposition and evolution of the sand bodies in this area, it can review the patterns of being propitious to the development of reservoirs by the genetic mechanism, to provide the scientific evidence for the continue drill for gas and oil. Applying the sequence stratigraphy and sedimentary system new theory, establish sedimentary pattern, systematic study on the group and the deposition of main layer and the sedimentary microfacies of Shuangyang and Sheling Group in Moliqing field, find out the characteristic of distribution of sandstone bodies and the distribution law of reservoirs.
According to the analysis of three-dimensional sedimentary section and the 18 wells data, the group and members of Shuangyang are systematically contrasted, and the first member of the Shuangyang group (S1) is divided into six sand groups based on the characteristics of sedimentary cycle, itsⅢ-Ⅵsand group is divided into 12 fine layers. Through the comprehensive analysis on core, logs and seismic data, 3 types sedimentary facies of lacustrine facies, fan delta facies and sublacustrine fan facies, 7 types of subfacies, 15 types of microfacies in this region of Shuangyang group S1 are identified, the mode of sedimentary facies in the area is set up and distribution characteristics of sedimentary microfaces in the 12 main fine layers are resumed. Fan delta facies is mainly developed in the south-east , a small fan delta developed in south, a small-scale sublacustrine fan facies developed in north-west, underwater distributary channel and sublacustrine fan developed in the center of the area, which constitute sedimentary system of lacustrine facies-fan delta facies-sublacustrine fan. This rock type consists of lithic arkose primarily and feldspathic litharenite and subarkose takes second place.
oil and gas in the S1 are mainly enriching in underwater distributary channel of the fan delta front and the middle of the sublake-fan, then they are found in the sheet sand and estuary dam of the fan delta front. In addition, hydrocarbons occur in shore-shallow lacustrine facies to edge of the basin; Fault and lithology are the important factors that controlled oil-gas migration and accumulation. The reservoir in the area is mainly fault-lithological complex reservoir. 4 favorable oil and gas targets are also predicted in the paper.
引文
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[3]丘东洲,何治亮.陆盆扇体沉积的形成机制及其油气意义[M].石油工业出版社,1985,148~154.
[4]冯增昭,王英华,沙庆安,等.中国沉积学碎屑岩沉积相研究[M].北京:石油工业出版社,1994.
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[6]刘招君,郭巍,董清水,等.湖盆层序地层学术语体系及模式—以松辽盆地西部斜坡为例[J].长春地质学院学报,1997,27(增刊Ⅱ):54~60.
[7]刘招君,董清水,郭巍.断陷湖盆层序地层特征及模式—以松辽盆地梨树断陷为例[J].长春科技大学学报,1998,28:54~58.
[8]刘茂强,杨丙中.伊通—舒兰地堑地质构造特征及其演化[M].北京:地质出版社1993.
[9]李本才,宋立臣,刘春霞,等.伊舒地堑成藏规律及勘探目标评价[J].吉林油田管理局勘探开发研究院,1996.
[10]李桢,温显瑞.鄂尔多斯盆地东南缘中生代延长组浊流沉积的发现与意义[J].现代地质,1995,9(1):99~107.
[11]何海青,陈海泓.浙西北二叠、三叠纪浊积岩系及其大地构造意义[J].地质学报1997,71(2):123~131.
[12]周永胜,孙春岩.伊舒地堑(中)新生代沉积盆地构造—沉积演化及其找油模式的研究[J].长春地质学院能源系,1991.
[13]周景田,何志国.伊通地堑岔路河拗陷下第三系岩相与油气关系探讨[J].岩相古地理,1990,2:38~45.
[14]吴崇筠,李艳菊.断陷盆地中的沉积岩[M].见中国石油学会石油地质委员会编:碎屑岩沉积相研究.北京:石油工业出版社,1988,1~17.
[15]张复新,马建秦.陕西镇安—山阳地区南阳山组重力流沉积作用及其意义[J].沉积学报,1997,15(3):48~55.
[16]郭占谦,迟元林.依兰—伊通地堑南北两段地质差异及油气勘探前景[J].大庆石油地质与开发,1991,10(3):1~4.
[17]顾家裕.陆相盆地层序地层学格架概念及模式[J].石油勘探与开发,1995,22(4):6~10.
[18]韩军.伊舒地堑第三系砂岩成岩作用[D]. 1991.
[19]魏得恩,刘殿军.吉林省第三系研究[M].吉林油田管理局勘探开发研究院,1990.
[20] James L. Coleman. Jr. Reinterpretation of Depositional Process in a Classic Flysch sequence (Pennsylvanian Jackfork Group), Ouachita Mountains, Arkansas and Oklahoma:Discussion[J]. AAPG Bulletin,1997, V. 18, No. 3: 466~469.
[21] Paul. J. constraction of a full field reservoir model for the Asasa field off shore Nigeria: Characterization of Pliocene stacked deepwater sediment gravity-flow reservoirs[J]. AAPG Bull, 1998,82(10),1909.
[22] Shanley. K. W, & McCabe. P. J. Perspectives on the sequence stratigraphy of continental strata[J]. AAPG Bull, 1994,78: 544~568.
[23] Shanmugam G. and Molola R. J. Submarine Fans: Charicteristics, Models, Classification, and Reservoir potential[J]. Earth-Science Reviews,1988,24: 383~428.
[24] Shanmugam. G. Sandy slump and Sandy debris flow facies in the Pliocene and pleistocene the Gulf of Mexica: implications for submarine fan models[J]. AAPG Bull, 1996,80(8): 1335~1336.
[25] Shanmugam. G. The Bouma Sequence and the turbidite mind set[J]. Earch-Science Reviews.1997, 42: 4, 201~229.
[26] Vail P. R. Seismic stratigraphy interpretation using sequence stratigrapth, partl, in Seismic stratigraphy interpretation precedure (Ed, by Bull A. W. ), Am Assoc[M]. Petrol. Geol. Atlas of sequence stratigraphy,1987.
[27] Van Wagoner. J. C. ect. Siliciclastic sequence stratigraphy in Well logs, cores and outcrops: Con-cepts for High-Rosolution corre-lation of Time and Facies[M]. Published by The American Association of Protroleum Geologists, Oklahoma, U. S. A,1990.
[28] Van Wagoner J. C. Sequence stratigrephy and marine to nonmarine facies architecture of fore land basin strata Book Cliffs, Utah, USA: Reply[J]. AAPG Bull, 1998,82(8): 1607~1618.
[29] McTavish R A, Jersey S H. Applying Wireline Logs to Estimate Source Rock Maturity[J]. Oil & Gas Journal,1998,96(7):76 ~79.
[30] Schmoker J W. Empirical Relation Between Carbonate Porosity and Thermal Maturity: An Approach to Regional Porosity Predic tion[J]. AAPG Bulletin,1984,68(11):1697 ~1703.
[31] Schmoker J W. Sandstone Porosity as Function of Thermal Maturity[J]. Geology, 1988, 16:1007 ~1010.
[2]邓宏文,王洪亮.层序地层基准面的识别对比技术及应用[J].石油与天然气地质1996,17(3):177~184.
[3]丘东洲,何治亮.陆盆扇体沉积的形成机制及其油气意义[M].石油工业出版社,1985,148~154.
[4]冯增昭,王英华,沙庆安,等.中国沉积学碎屑岩沉积相研究[M].北京:石油工业出版社,1994.
[5]刘招君,王东坡,何启祥.攀西地区上三叠统湖泊浊积岩和沉积特征及其地质意义[M].见张云湘主编:中国攀西裂谷文集.北京:地质出版社,1985,298~306.
[6]刘招君,郭巍,董清水,等.湖盆层序地层学术语体系及模式—以松辽盆地西部斜坡为例[J].长春地质学院学报,1997,27(增刊Ⅱ):54~60.
[7]刘招君,董清水,郭巍.断陷湖盆层序地层特征及模式—以松辽盆地梨树断陷为例[J].长春科技大学学报,1998,28:54~58.
[8]刘茂强,杨丙中.伊通—舒兰地堑地质构造特征及其演化[M].北京:地质出版社1993.
[9]李本才,宋立臣,刘春霞,等.伊舒地堑成藏规律及勘探目标评价[J].吉林油田管理局勘探开发研究院,1996.
[10]李桢,温显瑞.鄂尔多斯盆地东南缘中生代延长组浊流沉积的发现与意义[J].现代地质,1995,9(1):99~107.
[11]何海青,陈海泓.浙西北二叠、三叠纪浊积岩系及其大地构造意义[J].地质学报1997,71(2):123~131.
[12]周永胜,孙春岩.伊舒地堑(中)新生代沉积盆地构造—沉积演化及其找油模式的研究[J].长春地质学院能源系,1991.
[13]周景田,何志国.伊通地堑岔路河拗陷下第三系岩相与油气关系探讨[J].岩相古地理,1990,2:38~45.
[14]吴崇筠,李艳菊.断陷盆地中的沉积岩[M].见中国石油学会石油地质委员会编:碎屑岩沉积相研究.北京:石油工业出版社,1988,1~17.
[15]张复新,马建秦.陕西镇安—山阳地区南阳山组重力流沉积作用及其意义[J].沉积学报,1997,15(3):48~55.
[16]郭占谦,迟元林.依兰—伊通地堑南北两段地质差异及油气勘探前景[J].大庆石油地质与开发,1991,10(3):1~4.
[17]顾家裕.陆相盆地层序地层学格架概念及模式[J].石油勘探与开发,1995,22(4):6~10.
[18]韩军.伊舒地堑第三系砂岩成岩作用[D]. 1991.
[19]魏得恩,刘殿军.吉林省第三系研究[M].吉林油田管理局勘探开发研究院,1990.
[20] James L. Coleman. Jr. Reinterpretation of Depositional Process in a Classic Flysch sequence (Pennsylvanian Jackfork Group), Ouachita Mountains, Arkansas and Oklahoma:Discussion[J]. AAPG Bulletin,1997, V. 18, No. 3: 466~469.
[21] Paul. J. constraction of a full field reservoir model for the Asasa field off shore Nigeria: Characterization of Pliocene stacked deepwater sediment gravity-flow reservoirs[J]. AAPG Bull, 1998,82(10),1909.
[22] Shanley. K. W, & McCabe. P. J. Perspectives on the sequence stratigraphy of continental strata[J]. AAPG Bull, 1994,78: 544~568.
[23] Shanmugam G. and Molola R. J. Submarine Fans: Charicteristics, Models, Classification, and Reservoir potential[J]. Earth-Science Reviews,1988,24: 383~428.
[24] Shanmugam. G. Sandy slump and Sandy debris flow facies in the Pliocene and pleistocene the Gulf of Mexica: implications for submarine fan models[J]. AAPG Bull, 1996,80(8): 1335~1336.
[25] Shanmugam. G. The Bouma Sequence and the turbidite mind set[J]. Earch-Science Reviews.1997, 42: 4, 201~229.
[26] Vail P. R. Seismic stratigraphy interpretation using sequence stratigrapth, partl, in Seismic stratigraphy interpretation precedure (Ed, by Bull A. W. ), Am Assoc[M]. Petrol. Geol. Atlas of sequence stratigraphy,1987.
[27] Van Wagoner. J. C. ect. Siliciclastic sequence stratigraphy in Well logs, cores and outcrops: Con-cepts for High-Rosolution corre-lation of Time and Facies[M]. Published by The American Association of Protroleum Geologists, Oklahoma, U. S. A,1990.
[28] Van Wagoner J. C. Sequence stratigrephy and marine to nonmarine facies architecture of fore land basin strata Book Cliffs, Utah, USA: Reply[J]. AAPG Bull, 1998,82(8): 1607~1618.
[29] McTavish R A, Jersey S H. Applying Wireline Logs to Estimate Source Rock Maturity[J]. Oil & Gas Journal,1998,96(7):76 ~79.
[30] Schmoker J W. Empirical Relation Between Carbonate Porosity and Thermal Maturity: An Approach to Regional Porosity Predic tion[J]. AAPG Bulletin,1984,68(11):1697 ~1703.
[31] Schmoker J W. Sandstone Porosity as Function of Thermal Maturity[J]. Geology, 1988, 16:1007 ~1010.