【作者】 李刚；

【导师】 杨树人； 黄棱；

【作者基本信息】 大庆石油学院 ， 石油与天然气工程， 2008， 硕士

【摘要】 吉林乾安油田北部、两井油田储油层为大型河流――三角洲沉积储层,层数多、厚度大、非均质性严重。目前,油田储层描述的层次,纵向上到沉积单元,平面上到沉积微相,尚不能充分描述储层内部的非均质特征。特别是关于单砂体识别与描述技术的研究,尽管国内外大批学者从野外地质露头和现代河流沉积进行了探索,但尚没有一套成熟的适用于松辽盆地南部的描述方法和技术。本文通过对国内外相关技术文献和研究成果的广泛调研,针对吉林乾安油田北部、两井油田开发区河流-三角洲沉积储层发育具有代表性的实际情况,基于测井资料、精细地质研究成果和沉积学、层序地层学、地质统计学及层次分析法等理论和方法,提出了单砂体识别与描述技术研究的工作方法和标准,建立了单砂体识别与描述的技术体系。自主创新技术主要是:河流相沉积储层单砂体识别与描述技术,三角洲相沉积储层单砂体识别与描述技术,曲流河复合砂体中单一点坝体识别方法。本论文研究成果具体应用于4个典型区块,既完善了方法和技术,还通过实践认识到这一套方法和技术的推广价值,可以为特高含水期剩余油分析特别是储层内部剩余油挖潜提供依据。同时,本论文研究成果对进一步研究河流相储层建筑结构表征技术具有指导意义。更多还原

【Abstract】 JiLin QianAn And LingJing Oil Field is characterized as a large river-delta sedimentary reservoir with multiple formations, great thickness and high heterogeneity. As oil production enters into ultrahigh water cut period, the residual oil distributes quite differently in vertical and horizontal directions, resulting in tertiary production techniques have become leading ways to further improve oil recovery for this special stage. From the point of mechanism, the EOR can produce more residual oil that depends on precise descriptions on heterogeneous characteristics of intra-layers. At present, the reservoir descriptions, from sedimentary cells in vertical direction to sedimentary phase in horizontal direction, cannot completely demonstrate the heterogeneity of intra-layers. Although many people, domestic and abroad, have done a lot of research on outdoor geological outcrops and current river sediments, there are still not mature methods and techniques in terms of individual sandbody identification and description.Based on the studies and investigation on relative technical literatures and research results at home and abroad, the paper put forward to the method and criteria of individual sandbody identification and description and established relative process system, which has combined with core data, logging test data of infill drilling well pattern, fine description results and some theories and methods regarding the sediment, formation sequence, geological statistics, layer arrangement analysis and others. The innovative techniques include individual sandbody identification and description methods for river and delta sedimentary reservoirs as well as individual spot/dam identification method for curving river compound sandbody.The research results has been applied to three typical blocks, not only making the method and process more perfect, but also providing practical base for producing more residual oil. Meanwhile, the research has great significance on future structure properties studies of river phase reservoirs.更多还原