低渗—特低渗白云岩储层成岩相分析及测井识别——以伊陕斜坡马五段为例

doi:10.12108/yxyqc.20190508

岩性油气藏 ›› 2019, Vol. 31 ›› Issue (5): 70–83.doi: 10.12108/yxyqc.20190508

低渗—特低渗白云岩储层成岩相分析及测井识别——以伊陕斜坡马五段为例

李百强¹, 张小莉¹, 王起琮², 郭彬程³, 郭艳琴², 尚晓庆², 程浩², 卢俊辉¹, 赵希¹

1. 西北大学地质学系/二氧化碳捕集与封存技术国家地方联合工程研究中心, 西安 710069;
2. 西安石油大学地球科学与工程学院, 西安 710065;
3. 中国石油勘探开发研究院, 北京 100083

收稿日期:2019-01-30 修回日期:2019-04-03 出版日期:2019-09-21 发布日期:2019-09-16
作者简介:李百强(1989-),男,西北大学在读博士研究生,研究方向为沉积学与储层地质学、测井地质学。地址:(710069)陕西省西安市太白北路229号。Email:15249246598@163.com。
基金资助:
国家科技重大专项“十二五”专题“鄂尔多斯盆地南部奥陶系碳酸盐岩成岩作用及储层分布与演化”（编号：2011ZX05005-004-008HZ）、国家科技重大专项“十三五”专题“塔里木深层—超深层白云岩成岩作用与储层表征”（编号：2017ZX05005-002-004）和“十三五”国家油气重大专项“致密油甜点预测方法与甜点区评价”（编号：2016ZX05046-002）联合资助

Analysis and logging identification of diagenetic facies of dolomite reservoir with low and ultra-low permeability:a case study from Ma 5 member in Yishan slope,Ordos Basin

LI Baiqiang¹, ZHANG Xiaoli¹, WANG Qicong², GUO Bincheng³, GUO Yanqin², SHANG Xiaoqing², CHENG Hao², LU Junhui¹, ZHAO Xi¹

1. Department of Geology, Northwest University/National & Local Joint Engineering Research Center of Carbon Capture and Storage Technology, Xi'an 710069, China;
2. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China;
3. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China

Received:2019-01-30 Revised:2019-04-03 Online:2019-09-21 Published:2019-09-16

摘要/Abstract

摘要： 为研究低渗—特低渗白云岩储层的成岩相测井识别方法并进行定量划分，明确白云岩成岩相的空间展布及其有利区，依据岩心观察、普通薄片和铸体薄片鉴定、以及阴极发光分析等，结合X射线衍射和物性资料，对伊陕斜坡中东部马五段白云岩储层的成岩环境及成岩作用进行剖析，通过测井曲线的交会分析与软件的综合应用，构建了低渗—特低渗白云岩储层成岩相的定量识别标准。结果表明，低渗—特低渗白云岩储层成岩相可划分为早期大气淡水溶蚀亚相、表生期大气淡水溶蚀亚相、浅埋藏活跃回流渗透云化亚相、浅埋藏隐伏回流渗透云化亚相、钙质胶结相和泥质充填相等6类；以Pe-DEN，R_LLD-DEN交会及R_LLD-AC交会为代表的测井参数交会图法及软件综合应用是进行低渗—特低渗白云岩储层不同成岩相单井纵向上定量识别与连续划分的有效方法；白云岩储层成岩相在空间的分布具有纵向分带、横向分区的典型特征。有利储层主要分布于早期大气淡水溶蚀亚相和浅埋藏活跃回流渗透云化亚相，其次为表生期大气淡水溶蚀亚相，浅埋藏隐伏回流渗透云化亚相储层分布最少。

关键词: 低渗-特低渗, 白云岩储层, 成岩相, 测井识别, 马五段, 鄂尔多斯盆地

Abstract: In order to study the logging identification method and quantitative classification of diagenetic facies of dolostone reservoir with low and ultra-low permeability and clarify the spatial distribution characteristics of diagenetic facies and the favorable exploration area of dolostone reservoir". Based on core observation,identification of ordinary and casting thin section,and cathodoluminescence analysis,combined with X-ray diffraction and physical property data,the diagenetic environment and diagenesis of dolomite reservoir with low and ultralow permeability of Ma 5 member in Yishan slope were analyzed. Then the quantitative identification standard for diagenetic facies of dolomite reservoir with low and ultra-low permeability was established through the crossplot analysis of conventional logging curves and application of software program. The results show that the diagenetic facies of the dolomite reservoirs with low and ultra-low permeability can be divided into six types:early atmospheric freshwater dissolution,supergene atmospheric freshwater dissolution,shallow buried active reflux seepage dolomitization,shallow buried latent reflux seepage dolomitization,calcareous cementation and clay minerals filling. The crossplot method of logging parameters represented by Pe and DEN,R_LLD and DEN,and R_LLD and AC,and the comprehensive application of software program are effective approach for vertical quantitative identification and continuous division of different diagenetic facies of dolostone reservoir with low and ultralow permeability in single well. The spatial distribution of diagenetic facies of dolostone reservoir shows a typical characteristic of longitudinal zonation and planar partition. The favorable reservoirs are mainly developed in diagenetic facies of early atmospheric freshwater dissolution and shallow buried active reflux seepage dolomitization,followed by supergene atmospheric freshwater dissolution,and there is less reservoir deve-loped in shallow buried latent reflux seepage dolomitization diagenetic subfacies.

Key words: low and ultra-low permeability, dolomite reservoir, diagenetic facies, logging identification, Ma 5 member, Ordos Basin

中图分类号:

P512.2

李百强, 张小莉, 王起琮, 郭彬程, 郭艳琴, 尚晓庆, 程浩, 卢俊辉, 赵希. 低渗—特低渗白云岩储层成岩相分析及测井识别——以伊陕斜坡马五段为例[J]. 岩性油气藏, 2019, 31(5): 70–83.

LI Baiqiang, ZHANG Xiaoli, WANG Qicong, GUO Bincheng, GUO Yanqin, SHANG Xiaoqing, CHENG Hao, LU Junhui, ZHAO Xi. Analysis and logging identification of diagenetic facies of dolomite reservoir with low and ultra-low permeability:a case study from Ma 5 member in Yishan slope,Ordos Basin[J]. Lithologic Reservoirs, 2019, 31(5): 70–83.

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低渗—特低渗白云岩储层成岩相分析及测井识别——以伊陕斜坡马五段为例

Analysis and logging identification of diagenetic facies of dolomite reservoir with low and ultra-low permeability:a case study from Ma 5 member in Yishan slope,Ordos Basin

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