川东南綦江区块嘉陵江组地震相分析及储层预测研究

发布时间：2018-06-25 23:36

  本文选题：嘉陵江组 + 地震相分析　； 参考：《成都理工大学》2017年硕士论文

【摘要】：为了进一步加快川东南地区有利储层勘探进程,本论文选取优势储层地区:川东南綦江区块。以该区块嘉陵江组为研究对象,以野外露头观测,测井、地震资料为基础,以沉积岩石学,地震地层学,相关分析等学科技术为理论指导。开展了川东南地区綦江区块嘉陵江组地层地震相分析及储层预测研究,在此基础上划分出该地区有利储层区带,并对储层区带进行评价。取得的认识成果如下:(1)将采集岩样与钻、测井资料,结合沉积学、层序地层学相关理论,对目标地层进行沉积相分析研究。分析沉积环境,明确层序格架内沉积模式,结合单井沉积相分析成果,进行剖面沉积格架刻画。将研究区嘉陵江组发育沉积体系为碳酸盐岩台地沉积相,并划分为4个亚相,若干个微相。(2)合成地震记录并结合地震地层学相关理论进行地震剖面解释,将地震剖面与测井资料结合,划分地震相。将研究区划分出4个地震相,Ⅰ类顶部与内部均以空白反射为主,偶见顶部有断续反射,Ⅱ类顶部为单相位、弱振幅、连续较连续席状反射,内部主要为空白反射,局部有断续弱反射,Ⅲ类,顶部为双相位,较连续席状反射,局部为断续反射,内部为空白反射,Ⅳ类中高频,3-4个相位,弱-中强振幅、连续较连续席状反射。(3)根据测井和地震响应特征,确定局部地震异常。得到研究区西部嘉陵江组发育较多前积、前积伴随波状、短轴状、星点状等局部异常体。东北方向沉积泥质含量加重。(4)分析测井、钻井资料,结合嘉陵江组储层特征与资料条件,根据地震波组特征和波阻抗联合分析,对研究区目的层进行相控分析,通过计算得到部分地区主要储层滩相速度与子波主频率,预测优势沉积相相关性好的区域。与沉积相地震相平面展布结合,成功划分出有利储层相带。(5)综合以上成果,划分出6个川东南綦江地区嘉陵江组储层有利区带,其中Ⅰ类1个,Ⅱ类3个,Ⅲ类2个。
[Abstract]:In order to speed up the process of favorable reservoir exploration in southeastern Sichuan, this paper selects the superior reservoir area: Qijiang block in southeastern Sichuan. Taking Jialingjiang formation in this block as the research object, taking outcrop observation, logging and seismic data as the basis, and taking sedimentary petrology, seismostratigraphy, correlation analysis and other disciplines as theoretical guidance. The seismic facies analysis and reservoir prediction of Jialingjiang formation in Qijiang block in southeast Sichuan are carried out. On the basis of this the favorable reservoir zones in this area are divided and the reservoir zones are evaluated. The results obtained are as follows: (1) Sedimentary facies analysis of target strata is carried out based on the collection of rock samples drilling and logging data combined with the related theories of sedimentology and sequence stratigraphy. The sedimentary environment is analyzed and the sedimentary model in sequence framework is defined. Combined with the results of single well sedimentary facies analysis, the profile sedimentary framework is described. The sedimentary system of Jialingjiang formation is divided into four subfacies and several microfacies. (2) synthetic seismogram and seismic stratigraphic theory are used to interpret the seismic profile. Seismic facies are divided by combining seismic profile with logging data. The study area is divided into four seismic facies. The top and interior of type I are mainly composed of blank reflection, occasionally there is intermittent reflection at the top of the top, and the top of type II is single phase, weak amplitude, continuous and continuous sheet reflection, and the interior is mainly blank reflection. There are intermittent weak reflections in the region, type 鈪，

本文编号：2068029