准噶尔盆地石东地区中生代断裂特征研究

发布时间：2018-02-23 03:28

本文关键词： 准噶尔盆地石东地区断裂特征断裂识别方法圈闭识别　出处：《西南石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：石东地区位于准噶尔盆地石西凸起中东段,紧邻盆1井西富生烃凹陷,西南方向与亿吨级石西油田相接。本论文在调研国内外研究的基础上,采用了处理、解释相结合的研究方式,保障了地震资料的品质。通过对地震资料解释性处理和多种属性相结合的方法,提高断裂识别精度。并在此基础上开展了构造精细解释、断裂特征研究及圈闭识别。取得以下主要成果和认识：1)石东地区主要经历了三期重要演化：海西晚期构造反转隆升,石东凸起形成雏形；燕山期持续继承性隆升,形成一系列的拉张性断层；喜山期,构造变形相对微弱。石东凸起现今表现为近北东向展布的鼻凸,自西向东整体抬高,凸起轴部局部发育断鼻或断块型圈闭,斜坡区南缓北陡,局部发育低幅度构造。研究区中生界主要发育近东西向控凸主断裂、北东向与主断裂斜交的次级断裂、北西向展布且延伸较长的晚期断裂三组。2)油藏分析认为,清水河组具备“断块控藏,沿梁聚集”的特征,本论文围绕鼻梁带,结合微小断裂的识别,整体落实断块型圈闭12个,面积约31km2。研究区中下侏罗统砂体规模发育,储盖关系良好,凸起主体部位西山窑组遭受剥蚀尖灭,结合断裂精细刻画,落实J2x断层-地层圈闭5个,面积约31km2,落实下侏罗统断块圈闭4个,串层圈闭数8个,圈闭总面积约44.8 km2。
[Abstract]:Shidong area is located in the middle and east section of Shixi uplift in Junggar Basin, adjacent to the basin 1 well Xixi rich hydrocarbon sag, and the southwest direction is connected with the 100 million ton Shixi oil field. Based on the investigation and research at home and abroad, this paper adopts the treatment. The combination of interpretation and interpretation ensures the quality of seismic data. The accuracy of fault identification is improved by combining the interpretation of seismic data with a variety of attributes. On this basis, the fine interpretation of structures is carried out. The study of fault characteristics and trap identification. The main achievements and understanding of the Shidong area are as follows: the late Hercynian tectonic reverse uplift, the embryonic form of Shidong uplift, the Yanshanian continuous inherited uplift, the late Hercynian tectonic reverse uplift, the Yenshanian continuous succession uplift, the late Hercynian tectonic inversion uplift, A series of extensional faults were formed; during the Himalayan period, the tectonic deformation was relatively weak. The slope area is steeper in the south and north, and the low-amplitude structure is developed locally. The Mesozoic main faults in the study area are mainly composed of the main faults in the near east-west direction and the secondary faults which are inclined to the main faults in the north-east direction. The reservoir analysis of late fault group. 2), which is extended in NW direction, shows that Qingshuihe formation has the characteristics of "fault block controlling reservoir, gathering along beam". This paper revolves around nose beam zone, combined with the recognition of small fault, and implements 12 fault block traps as a whole. The area of the study area is about 31km2. The sand body of the middle and lower Jurassic in the study area has developed in scale, the relationship between reservoir and cover is good, the Xishanyao formation in the main part of the uplift has been destroyed by denudation, combined with the fine description of the fault, 5 J2x fault-stratigraphic traps have been implemented. The area is about 31km2, 4 traps of Lower Jurassic fault block, 8 traps of series layer, and the total area of trap is about 44.8 km2.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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