川东北龙会

发布时间：2018-01-01 11:20

本文关键词：川东北龙会场—铁山地区石炭系黄龙组储层特征研究　出处：《西南石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：本论文以川东北龙会场-铁山地区为研究区,以石炭系黄龙组储层为研究对象,应用沉积岩石学、储层地质学、油矿地质学、地球化学等理论,综合地质、测井、岩心、地化及部分地震资料并结合已有的研究成果,对龙会场-铁山地区石炭系黄龙组的地层展布特征、沉积相特征、储层基本特征、储层纵、横向展布及储层受控因素进行了研究,最终指出了储层发育的有利区。研究区石炭系黄龙组地层三分,总体上呈南西-北东向增厚,井间对比性良好,且与上覆下伏地层岩性、电性特征区别明显,界线清楚。根据岩性及电性特征,结合前人研究成果,认为研究区在黄龙期的沉积环境总体上是潮坪沉积环境,潮坪沉积相又可以分为三个亚相:潮上带、潮间带和潮下带。黄龙一期主要处于潮上带沉积环境;黄龙二期主要处于潮间带沉积环境;黄龙三期主要处于潮下带沉积环境,部分井区处于潮间带沉积环境。总体上反映一个水体从北东向南西方向侵入的过程。研究区黄龙组的储集岩类型主要为云岩,以颗粒云岩,晶粒云岩为主,其次为角砾云岩。储层类型为裂缝-孔隙型,孔隙为主要的储集空间,孔隙类型主要为粒间(溶)孔、粒内溶孔及晶间(溶)孔。裂缝对改善储层的渗透性起到了重要作用。区内储层主要发育于黄龙二段,且多为Ⅲ类储层。储层的发育受到沉积微相、多种成岩作用以及构造作用共同控制。其中有利沉积微相为颗粒滩微相和(灰)云坪微相。借用前人研究成果,总结认为埋藏白云石化作用、表生期岩溶和埋藏溶蚀作用对储层发育起到了重要作用。根据地层的平面分布,叠合黄龙二期区内的沉积相展布,指出了区内有利于储层发育的Ⅰ类和Ⅱ类有利区。Ⅰ类有利区位于铁山构造以西,龙会场以东的三角区;Ⅱ类有利区位于龙岗80井区。
[Abstract]:In this paper, the dragon in the northeast of Sichuan venue - Tieshan area as the study area, the Huanglong Formation of Carboniferous Reservoir as the research object, the application of sedimentary petrology, reservoir geology, Oilfield Geology, geochemistry, geology, logging, core, localization and part of seismic data and research results and the strata distribution the characteristics of the Carboniferous Longhuichang Tieshan area, Huanglong Formation, sedimentary facies, reservoir characteristics, reservoir vertical, horizontal distribution and reservoir control factors are studied, finally pointed out the favorable reservoir. The study area of Carboniferous Huanglong Formation in three, with an overall SW-NE to thickening, good correlation between wells, and the overlying underlying strata lithology, electrical characteristics are distinct, clear boundaries. According to lithology and electrical characteristics, combined with previous research results, the study area that is the tidal flat depositional ring in the sedimentary period of Huanglong environment on the whole Exit, tidal flat sedimentary facies can be divided into three subfacies: supratidal zone, intertidal zone and subtidal zone. The first phase mainly in Huanglong supratidal sedimentary environment; Huanglong two main sedimentary environment in the intertidal zone; Huanglong three mainly in the subtidal environment, some wells in the sedimentary environment of the intertidal zone. The overall reflection of a water from North East to South West to the invasion process. The study area of Huanglong Formation reservoir rock type is mainly dolomite, with grain dolomite, grain dolomite, secondly breccia dolomite reservoir types. The fracture pore type, pore is the main reservoir space. The types of pore are mainly intergranular (karst) pore, intragranular dissolved pore intercrystal (karst). The crack hole plays an important role in improving permeability of reservoir area. The main reservoirs in Huanglong in two, and more for the class III reservoir. The reservoir development by sedimentary microfacies. The diagenesis and tectonic action Common control. The favorable sedimentary microfacies for shoal microfacies and (gray) cloud flat microfacies. From the results of previous studies, concluded that the burial dolomitization, supergene karst and burial dissolution plays an important role in reservoir development. According to the distribution of strata, superimposed Huanglong two area the distribution of sedimentary facies, pointed out that the region is conducive to the development of reservoir type in this area. The favorable area of class I is located in Tieshan West Triangle Longhuichang structure, East; favorable area II is located in Longgang 80 well area.

【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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