姬源油田耿179区长2储层综合评价及有利区优选

发布时间：2017-12-28 06:14

本文关键词：姬源油田耿179区长2储层综合评价及有利区优选　出处：《西安石油大学》2016年硕士论文　论文类型：学位论文

【摘要】：研究区位于鄂尔多斯盆地伊陕斜坡中南部的定边县,目的层为延长组长2油层组,本次研究是在测井、录井、钻井、试油试采等资料和实验分析资料的基础上,运用现代地质理论和各种处理软件,进行系统的地层对比、沉积相及砂层展布和储层综合地质特征的研究,查明长2砂岩储层空间发育和分布规律,进行综合分类评价,找出控制长2油藏分布与富集的因素,预测有利成藏区。研究区内地层起伏平缓,地层倾向西偏南,构造与区域单斜背景一致,局部地区发育鼻隆构造;三角洲平原亚相沉积。岩性主要为细粒长石砂岩及少量岩屑长石砂岩,中孔低渗透储层。成岩作用强烈,成岩演化阶段达到晚成岩A期。孔隙类型有粒间孔、长石溶孔、粒内溶孔、铸模孔、晶间孔和微裂缝等,以粒间孔和长石溶孔为主。碎屑颗粒呈次棱角状,分选好,颗粒支撑,线接触或点-线接触,胶结类型为薄膜-孔隙式或加大-孔隙式。储层具有强非均质性,储层厚度及孔、渗受沉积相带控制,具有一定方向性。油水两相共渗区狭窄,束缚水饱和度较高,亲水性储层。根据储层评价综合分类标准,将长2储层分为A、B、C、D共四种类型,分别对应好、中等、较差;以Ⅰ、Ⅱ类为主。
[Abstract]:The study area is located in the Ordos basin yishaan slope south of Dingbian County, the target layer for 2 reservoir of Yanchang formation, this study is based on drilling, logging, oil testing data and analysis of experimental data, using the modern geological theory and various processing software, stratigraphic correlation and sedimentary facies system and the sand distribution and the reservoir comprehensive geological characteristics of the study, the identification and distribution of Chang 2 sandstone reservoir space development, comprehensive evaluation, find out the control of Chang 2 reservoir distribution and enrichment factors, predicting the favorable reseivoir. The inland layer of the study area is gentle and gentle, the formation tendency is west to the south, the structure is consistent with the regional monoclinic background, the nasal uplift structure is developed in some areas, and the delta plain subfacies deposit. The lithology is mainly fine-grained feldspar sandstone and a small number of lithic feldspar sandstone and medium pore low permeability reservoir. Strong diagenesis, diagenetic stage to late diagenesis A period. The pore types include intergranular pore, feldspar dissolving hole, intragranular hole dissolving, mold hole, intergranular pore and micro crack, mainly with intergranular pore and feldspar dissolution pore. The clastic particles are sub - angular, separation, particle support, line contact or point - line contact, and the cementation type is thin film - pore or enlarging - pore type. The reservoir has a strong heterogeneity, and the thickness of the reservoir and the pore and seepage are controlled by the sedimentary facies. It has certain direction. The oil-water two - phase co - osmotic zone is narrow, the bound water saturation is high, and the hydrophilic reservoir is. According to the comprehensive classification standard of reservoir evaluation, the long 2 reservoirs are divided into four types, A, B, C and D, which correspond to good, medium and poor, and are mainly class I and II.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P618.13

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