高台子油田北部葡萄花油层成藏模式及有利区块预测
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摘要
随着高台子油田葡萄花油层主体区块的相继开发,其北部外扩区葡萄花油层岩性油气藏已经成为主要的储量接替目标。然而该区油水分布极为复杂。目前,对该区块没有宏观整体认识及精细研究。本论文综合运用高分辨率层序地层学、石油地质学、沉积学及相关学科的新理论,对研究区古构造演化、古油气运聚场、储层沉积特征、油水分布、油气成藏规律及模式等进行了重点研究。
运用古构造恢复理论,对葡萄花油层顶面各个时期的古构造演化进行了系统研究,总结出葡萄花油层顶面古构造演化的5个关键阶段及油气成藏的关键期为明水组末期,首次发现油气成藏关键期的高北古鼻状构造,结合古油气运移场分析,研究区西南部空白区成为有利油气富集目标区;通过取心井相分析,研究区为三角洲前缘亚相,主要发育水下分流河道、席状砂、水下分流间等微相;运用高分辨率层序地层学,进行精细平面沉积微相研究,建立高台子油田葡萄花油层统一的等时地层格架;运用油水综合分析及追踪技术,结合构造、沉积、储层,试油、测井解释等资料,对油水分布的控制因素进行分析,认为砂体、砂体和断层组合控制油水界面,单一圈闭内具有统一的油水界面;通过对典型油气藏解剖,认为研究区为单一局部构造控油,并总结出该区2种油气成藏模式。通过上述研究,预测有利区块,对开发区进行扩边、补空。
With the successive exploitation of the main area of the Putaohua formation in the Gaotaizi oilfield,the lithology reservoir of the Putaohua formation in the extended region in the north of the area has been a main reserve replacement target.However,the oil-water distribution of the region is very complicated.At present,there isn’t any macroscopic overall understanding and meticulous research in the area.Based on the high-resolution sequence stratigraphy,petroleum geology, sedimentology and other related disciplines,this paper mainly studied the palaeostructure evolution,the migration field of the ancient oil and gas,the sedimentary characteristics of the reservoir, the oil-water distribution and the regulations and patterns of the hydrocarbon accumulation.
Based on the theory of the palaeostructure recovery,this article systematically studied palaeostructure evolution on the top of the Putaohua formation in various period.The five stages of palaeostructure evolution on the top of the Putaohua formation were summed up and the key period of the hydrocarbon accumulation is the final phase of the Mingshui layer,initial discovered the ancient nose structure of the northern Gaotaizi in the key period of the hydrocarbon accumulation.Combined with the migration field of the ancient oil and gas,the blank region in the southwest of the study area is the favorable taget region of the hydrocarbon enrichment.By analysing the facies of the coring well,we can draw a concluded that the study region mainly developed the delta front subfacies included the submerged branch channel,sand sheet and the submerged branch interchannel microfacies and so on.By using the high-resolution sequence stratigraphy,studied the fine plane microfacies,established the sequence-stratigraphic framework of the Putaohua formation in Gaotaizi oilfield.Using the technology of he oil-water comprehensively analysis and trace,combined with the data of the structure,depositon,reservoir,oil test and log interpretation,this paper analysed the controlling factors of the oil-water distribution,considered that sand and the combination of the sand and fault controls the oil-water interface,the single trap has the unite oil-water interface.By dissecting the typical oil and gas reservoir,it was founded that the single local structures is the main controlling oil factors in the area,and two kinds of the patterns of the hydrocarbon accumulation were summed up.From the research above,the favorable region can be predicted,it can provide the suggestion for the extended edge of the development region and for filling the space.
运用古构造恢复理论,对葡萄花油层顶面各个时期的古构造演化进行了系统研究,总结出葡萄花油层顶面古构造演化的5个关键阶段及油气成藏的关键期为明水组末期,首次发现油气成藏关键期的高北古鼻状构造,结合古油气运移场分析,研究区西南部空白区成为有利油气富集目标区;通过取心井相分析,研究区为三角洲前缘亚相,主要发育水下分流河道、席状砂、水下分流间等微相;运用高分辨率层序地层学,进行精细平面沉积微相研究,建立高台子油田葡萄花油层统一的等时地层格架;运用油水综合分析及追踪技术,结合构造、沉积、储层,试油、测井解释等资料,对油水分布的控制因素进行分析,认为砂体、砂体和断层组合控制油水界面,单一圈闭内具有统一的油水界面;通过对典型油气藏解剖,认为研究区为单一局部构造控油,并总结出该区2种油气成藏模式。通过上述研究,预测有利区块,对开发区进行扩边、补空。
With the successive exploitation of the main area of the Putaohua formation in the Gaotaizi oilfield,the lithology reservoir of the Putaohua formation in the extended region in the north of the area has been a main reserve replacement target.However,the oil-water distribution of the region is very complicated.At present,there isn’t any macroscopic overall understanding and meticulous research in the area.Based on the high-resolution sequence stratigraphy,petroleum geology, sedimentology and other related disciplines,this paper mainly studied the palaeostructure evolution,the migration field of the ancient oil and gas,the sedimentary characteristics of the reservoir, the oil-water distribution and the regulations and patterns of the hydrocarbon accumulation.
Based on the theory of the palaeostructure recovery,this article systematically studied palaeostructure evolution on the top of the Putaohua formation in various period.The five stages of palaeostructure evolution on the top of the Putaohua formation were summed up and the key period of the hydrocarbon accumulation is the final phase of the Mingshui layer,initial discovered the ancient nose structure of the northern Gaotaizi in the key period of the hydrocarbon accumulation.Combined with the migration field of the ancient oil and gas,the blank region in the southwest of the study area is the favorable taget region of the hydrocarbon enrichment.By analysing the facies of the coring well,we can draw a concluded that the study region mainly developed the delta front subfacies included the submerged branch channel,sand sheet and the submerged branch interchannel microfacies and so on.By using the high-resolution sequence stratigraphy,studied the fine plane microfacies,established the sequence-stratigraphic framework of the Putaohua formation in Gaotaizi oilfield.Using the technology of he oil-water comprehensively analysis and trace,combined with the data of the structure,depositon,reservoir,oil test and log interpretation,this paper analysed the controlling factors of the oil-water distribution,considered that sand and the combination of the sand and fault controls the oil-water interface,the single trap has the unite oil-water interface.By dissecting the typical oil and gas reservoir,it was founded that the single local structures is the main controlling oil factors in the area,and two kinds of the patterns of the hydrocarbon accumulation were summed up.From the research above,the favorable region can be predicted,it can provide the suggestion for the extended edge of the development region and for filling the space.
引文
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[2]蔡希源,李思田,樊太亮等.陆相盆地高精度层序地层学—隐蔽油气藏勘探基础、方法与实践[M].北京:地质出版社,2003.1～2.
[3]解习农.等.陆相盆地层序地层研究特点,地质科技情报,1993.11～14.
[4]纪友亮,张世奇.陆相断陷湖盆层序地层学[M].石油工业出版社,1996.1～128.
[5]薛良清.层序地层学在湖相盆地中的应用探讨[J].石油勘探与开发,1990,17( 6) :29～34.
[6]侯明才,陈洪德,田景春.层序地层学的研究进展[J].矿物岩石,2001,21(3):128～134.
[7]李思田,林畅松等.大型陆相盆地层序地层学研究—以鄂尔多斯中生代盆地为例,地学前缘,1995.
[8]罗立民.河湖沉积体系三维高分辨率层序地层学[M].北京:地质出版社,1999.1.
[9] P.R.Vail,J.B.Sangree著.应用层序地层学[M].张宏逵等译.东营:石油大学出版社,1991.17-27.
[10] P.R.Vail, etal. Sequence stratigraphy workbook fundamentals of sequence stratigraphy [A]. AAPG, P.R.Vail, J.b.Sangree. Annual Convention short course: Sequence stratigraphy interpretation of seismic well and outcrop data [C]. March19,1988 Houston,Texas.
[11] P.R.Vail,etal. Seismic stratigraphy and global changes of sea level [J]. AAPG, 1977, Memoir 26.
[12]Miall A D .Stratigraphic sequences and their chronostratigraphic correlation[J].Journal of sedimentary petrology.
[13]胡见义,徐树宝,刘淑萱,等.非构造油气藏[M].北京:石油工业出版社,1986.69～146.
[14]王永春.松辽盆地南部岩性油藏的形成和分布[M].北京:石油工业出版社,2001.131～177.
[15]陆建林,李思田,等.南阳凹陷隐蔽油气藏的分类及勘探思路[J].江汉石油学院学报2004,26(1):27～28.
[16]萧德铭,刘金发,侯启军,等.向斜区岩性油藏成藏条件及分布规律[A].见:大庆石油管理局.大庆油田发现40年论文集[C].北京:石油工业出版社,1999.27～34.
[17]李克勤.陕甘宁地区上三叠系隐蔽低渗油藏的找油方向,石油学报,1986,7(1): 30～380.
[18]杨万里.隐蔽油气藏勘探的实践与认识.中国隐蔽油气藏勘探论文集[C].哈尔滨:黑龙江科学技术出版社,1984.
[19]李丕龙,庞雄奇.隐蔽油气藏形成机理与勘探实践[A].见:第三届隐蔽油气藏国际学术研讨会论文集[C].北京:石油工业出版社,2004.
[20]庞雄奇.隐蔽油气藏成因机理研究进展与问题,石油工业出版社.
[21]肖焕钦,陈广军,李常宝.陆相断陷盆地隐蔽油气藏分类及勘探[J].特种油气藏,2002,9(5):10～12.
[22] T.Michel,Halbouty编,刘民中等译.寻找隐蔽油藏[M].北京:石油工业出版社,1988.
[23] M.T.Halbouty. The deliberate search for the subtle trap[C]. Oklahoma:AAPG Memoir 32,1982,1～8.
[24] A I.Levorsen. The obscure and subtle trap[J]. AAPG Bull,1966,50(10):2058～2067.
[25] W.B.Wilson. Proposed classification of oil and gas reservoirs[C]. Oklahoma: AAPG Sidney Powers Memorial Volum 1934,433～445.
[26] Kaufman G M,Balcer Y,Druyt D.A probabilistic modal of oil and gas discovery[A]. Methods of Estimating the Volume of Undiscovered Oil and Gas Reserves(AAPG Studies in Geology#1)[C],1975.113～142.
[27]柳成志.齐家—古龙地区葡萄花油层层序特征及隐蔽油气藏预测[D].大庆:大庆石油学院(大庆),2006.
[28]《大庆石油地质与开发》编辑部编.中国隐蔽油气藏勘探论文集[C].哈尔滨:黑龙江科学技术出版社,1984.
[29]邓宏文,王洪亮,李熙哲.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.
[30]邓宏文,王洪亮,宁宁.沉积物体积分配原理—高分辨率层序地层学的理论基础[J].地学前缘,2000,7(4):305～313.
[31]邓宏文,王洪亮,祝永军.高分辨率层序地层学—原理及应用[M].地质出版社,2002.
[32]邓宏文.美国层序地层研究中的新学派—高分辨率层序地层学[J].石油与天然气地质,1995,16(2):89～97.
[33]魏魁生,徐怀大,叶淑芬.松辽盆地白垩系高分辨率层序地层格架[J].石油与天然气地质,1997,18(1):7～14.
[34]刘宗堡,马世忠,吕延防,等.大型凹陷斜坡带油气成藏模式—以三肇凹陷葡萄花油层为例[J].吉林大学学报(地球科学版),2008,38(6):937～945.
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