【作者】 陈雷；

【导师】 马世忠；

【作者基本信息】 大庆石油学院 ， 矿物学、岩石学、矿床学， 2010， 硕士

【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。更多还原

【Abstract】 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.更多还原