【作者】 马智威；

【导师】 郭建华；

【作者基本信息】 中南大学 ， 矿产普查与勘探， 2010， 硕士

【摘要】 研究区位于辽河盆地大民屯凹陷西侧,研究区东侧于二十世纪八十年代发现了东胜堡、静安堡及曹台潜山,并已投入开发多年,其所处区域大民屯凹陷是一个周边为断层切割的三角形地堑式凹陷,属中新生代裂谷盆地,其发育和演化经历了地壳拱张,裂陷和坳陷三大地质发育阶段。基底则由太古界变质岩和元古界白云岩构成。其潜山构造格局主要受断裂构造控制。凹陷二级构造单元为呈北东向、凹隆相间、雁形排列的背斜、鼻状等构造带,大民屯静安堡西侧则位于静安堡断裂鼻状构造带西侧的低潜山带,与区域构造发育史有着紧密的联系。由于低潜山埋藏较深,以往研究较少,因此以前研究主要局限于高潜山带。本文以构造地质、储层地质及油气藏地质的基本理论为指导,结合地震、测井资料对研究区域的地质背景和潜山构造特征、潜山储层特征进行了较详细的研究。通过对地震资料的精细解释,查清潜山顶面的构造形态,研究静安堡西侧低潜山带构造演化和圈闭的形成与演化规律。应用地质综合研究手段,查明潜山地层组成,岩石特征,储集空间及分布规律,研究裂缝的成因及发育规律,并在此基础上对研究区域的储层作出了评价,研究区裂缝发育程度以及储层发育以东部较好,向西部逐渐变差。更多还原

【Abstract】 The research area is located in the west side of Damintun depression of Liaohe Basin.Dongsheng Fort, Jing’an Fort and Caotai buried have been found in the east side of the study area in 1980s,which have been put into development for many years.The Damintun depression is a circunferential fault cutting triangel-type depression,which belongs to Mesozoic-Cenozoic rift basin. Its development and evolution experienced three geological developed stages—crust uplifting,rifting and depression. The base lamina consists of Archean rocks and Proterozoiz dolomite. While the buried hill structure is mainly controlled by fault structure.The secondary depression structure units are North-East,concave and convex,nose-like anticlinal structural belt,which formed a goose-shaped arrangement,whereas,the west side of Damintun Jing’an Fort, situated in the zone of low buried hill of the west side of Jing’an fort fracture nose-like structure zone,has a close relationship with development history of regine structure.As the zone of low buried hill deeply lies hidden in the earth,there were rare study of it before.The current study is mainly restricted to high buried hill zone,which has increased the difficult of research. Directed by the basic theory of structure geology,reservoir geology and oil and gas accumulation geogoly, as well as combining with earthquake and logging data, the geogoly backgound of the research area and the reservior characteristics of the buried hill have been studied in detail in this paper.Through the detailed interpretation of seiemic data,this paper is aimed to identify the structure form of the potential top surface of the buried hill,to study the structure evolution of the low buried hill zone in the west side of Jing’an Fort,and its form of the closed circle and the eveolution regular pattern.The paper also apply the comprehensive geoglogical study means to search out the composition of buried hill formation,rock features,storage space and distribution law,and then to study the causa of cracks and development law.Based on above,the evaluation to reserior area is that fractures development level and resrvior development to the east are well done,however,to the west it become worse.更多还原