岔河集构造带东三段沉积相研究
发布时间：2018-10-08 06:36
【摘要】：岔河集造带位于霸县凹陷的西部,牛驼镇凸起的西部,主要发育北东向和北西向两组方向的断裂,钻遇的地层从下到上依次为古近系孔店组、沙河街组、东营组、新近系馆陶组、明化镇组、第四系平原组地层。本论文以多学科理论为指导,采用宏观与微观相结合的方法,以岩心观察与描述为基础,结合岩心、古生物等分析化验资料,参考区域地震相及测井相响应特征对研究区东三段地层展开沉积相研究。取得了如下认识： 1)根据标志层和沉积旋回,将岔河集构造带东营组地层自下而上划分东三段、东二段、东一段,其中东三段地层自下而上进一步划分Ed3Ⅳ、Ed3Ⅲ、Ed3Ⅱ和Ed3I四个油层组。 2)根据岩性、沉积构造、颗粒结构、古生物特征、测井相分析,在单井沉积微相分析的基础上,研究区为浅水三角洲和湖泊相沉积体系,其中以浅水三角洲相沉积为主,并可进一步划分浅水三角洲平原亚相、水三角洲前缘亚相和三角洲前缘亚相,其中三洲平原亚相可细分为分流河道、分流间湾和天然堤微相,三角洲前缘亚相可细分为水下分流河道、水下分流间湾、水下天然堤、分流河口坝、砂坝和泥滩等微相。 3)根据重矿物组合及分布、岩石成分、砂岩分布等资料分析,认为工区内主要沉积物源来自于西部,岔北区块存在来自北面的物源,岔南区块南部存在来自西南方向的次级物源。 4)通过工区内不同沉积微相储集物性特征的研究,认为(水下)分流河道微相储层物性最好,多为中孔中渗储层；砂坝储集性能相对较好,多为中孔低渗储层；天然堤、水下天然堤砂体储集性能较差,多为低孔低渗储层；分流间湾微相多是特低孔特低渗砂体。根据不同沉积微相储集物性特征并结合试油资料,认为三角洲分流河道砂体属于高产能区,远砂坝、河口坝和曲流河边滩相储层属于较高产能区,天然堤属于低产能区。
[Abstract]:The Cha Heji belt is located in the western part of the Baxian depression and the western part of Niu Humu Town uplift. It mainly develops faults in the direction of NNE and NW, and the strata encountered in the drill are Paleogene Kongdian formation, Shahejie formation and Dongying formation from the bottom to the top. Neogene Guantao formation, Minghuazhen formation and Quaternary plain formation. Under the guidance of multi-disciplinary theory, this paper adopts the method of combining macro and micro, based on core observation and description, combined with core, paleontological and other analytical data. According to the response characteristics of seismic facies and logging facies, the depositional facies of the third member of the eastern part of the study area are studied. The results are as follows: 1) according to the marker layer and sedimentary cycle, the Dongying formation of the Cha Heji structural belt is divided from the bottom to the top into the east third member, the eastern second member and the east first member. The three formations in the Middle East are further divided into four formations, Ed3 鈪，
本文编号：2255790
[Abstract]:The Cha Heji belt is located in the western part of the Baxian depression and the western part of Niu Humu Town uplift. It mainly develops faults in the direction of NNE and NW, and the strata encountered in the drill are Paleogene Kongdian formation, Shahejie formation and Dongying formation from the bottom to the top. Neogene Guantao formation, Minghuazhen formation and Quaternary plain formation. Under the guidance of multi-disciplinary theory, this paper adopts the method of combining macro and micro, based on core observation and description, combined with core, paleontological and other analytical data. According to the response characteristics of seismic facies and logging facies, the depositional facies of the third member of the eastern part of the study area are studied. The results are as follows: 1) according to the marker layer and sedimentary cycle, the Dongying formation of the Cha Heji structural belt is divided from the bottom to the top into the east third member, the eastern second member and the east first member. The three formations in the Middle East are further divided into four formations, Ed3 鈪，
本文编号：2255790
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