珠江口盆地珠江组碳酸盐岩储层质量评价

doi:10.11885/j.issn.1674-5086.2015.02.07.01

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (1): 12-24.DOI: 10.11885/j.issn.1674-5086.2015.02.07.01

珠江口盆地珠江组碳酸盐岩储层质量评价

兰叶芳¹, 黄思静², 周小康³, 马永坤³

1. 贵州工程应用技术学院矿业工程学院, 贵州毕节 551700;
2. 成都理工大学沉积地质研究院, 四川成都 610059;
3. 中海石油(中国)有限公司深圳分公司, 广东广州 510024

收稿日期:2015-02-07 出版日期:2017-02-01 发布日期:2017-02-01
通讯作者: 兰叶芳,E-mail:wssbdnn@163.com
作者简介:兰叶芳,1985年生,女,汉族,四川泸州人,讲师,博士,主要从事沉积地质学研究。E-mail:wssbdnn@163.com;黄思静,1949年生,男,汉族,四川成都人,教授,博士生导师,主要从事沉积地球化学和储层沉积学方面的研究工作。E-mail:hsj@cdut.edu.cn;周小康,1981年生,男,汉族,广东广州人,工程师,硕士,主要从事油气勘探方面的研究工作。E-mail:307234035@qq.com;马永坤,1986年生,男,汉族,河南南阳人,助理工程师,硕士,主要从事沉积学方面的研究工作。E-mail:mayk4@cnooc.com.cn
基金资助:
国家科技重大专项（Z2008SLSZ-052）；国家自然科学基金（41172099，41272130）；贵州省高校优秀科技创新人才支持计划（黔教合KY字[2015]504）。

Reservoir Quality Evaluation of Carbonates in the Zhujiang Formation of the Early Miocene Pearl River Mouth Basin

LAN Yefang¹, HUANG Sijing², ZHOU Xiaokang³, MA Yongkun³

1. Institute of Mining Engineering, Guizhou University of Engineering Science, Bijie, Guizhou 551700, China;
2. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
3. Shenzhen Branch, CNOOC(China), Guangzhou, Guangdong 510024, China

Received:2015-02-07 Online:2017-02-01 Published:2017-02-01

摘要/Abstract

摘要： 岩芯观察、薄片鉴定及物性分析等研究表明，珠江口盆地东沙隆起惠州、流花和陆丰3个地区珠江组碳酸盐岩储层质量明显不同。惠州地区珠江组碳酸盐岩在成岩过程中发育多期次的胶结作用，强烈的胶结作用严重阻塞孔隙，面孔率大多小于1%，渗透率以小于1 mD为主，储层质量最差；广泛的不同期次的溶解作用使得流花地区以粒间溶孔、铸模孔、超大孔及晶洞孔等次生孔为主，孔隙度和渗透率值在3个地区中最高，孔渗分布显著正偏，显示良好的孔隙度渗透率关系，对于获得某一特定渗透率所需的较低的截止孔隙度值，储层质量最好；陆丰地区成岩早期发育的胶结作用有利于原生孔隙的保存，后期受到一定的溶解作用改造，但溶解作用远不及流花地区发育，孔隙构成以粒间孔、生物骨架孔、粒内孔等原生孔为主，原生孔相对较差的连通性使其孔隙度虽然与流花地区大致相当，但渗透率却要比流花地区低得多，获得相同渗透率所需要的截止孔隙度比流花地区高，储层质量中等。

关键词: 储层特征, 成岩作用, 储层质量, 珠江组, 珠江口盆地

Abstract: Core observation, thin section identification, and physical property analysis show that the carbonate reservoir quality of the Lufeng, Huizhou, and Liuhua areas in the Pearl River Mouth Basin is significantly different. The carbonate reservoir quality of the Huizhou area is the lowest of the three areas because of extensive cementation; the reservoir has a visual porosity and an average permeability below 1 mD. Extensive dissolution, including early meteoric and burial dissolution, generates a great amount of secondary porosity, such as intergranular pores, mold pores, alter-large pores and geode pores, in the Liuhua area, which contributes to more than 80% of the whole thin section porosity. The carbonates of this area have the highest porosity and permeability, high porosity and permeability correlation coefficient, and low cutoff porosity. Therefore, the best carbonate reservoir was developed in the Liuhua area. Early cementation is very helpful for the preservation of the primary porosity in the Lufeng area, where the dissolution is much weaker than in the Liuhua area, which makes the porosity in the Lufeng area approximately equal to that of the Liuhua area. However, its permeability is much lower than that of the Liuhua area due to the low connectivity of the primary porosity and the cutoff porosity is the highest. Thus, the Lufeng area is characterized by medium carbonate reservoir quality.

Key words: reservoir characteristics, diagenesis, reservoir quality, Zhujiang Formation, Pearl River Mouth Basin

中图分类号:

TE122

兰叶芳, 黄思静, 周小康, 马永坤. 珠江口盆地珠江组碳酸盐岩储层质量评价[J]. 西南石油大学学报(自然科学版), 2017, 39(1): 12-24.

LAN Yefang, HUANG Sijing, ZHOU Xiaokang, MA Yongkun. Reservoir Quality Evaluation of Carbonates in the Zhujiang Formation of the Early Miocene Pearl River Mouth Basin[J]. 西南石油大学学报(自然科学版), 2017, 39(1): 12-24.

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珠江口盆地珠江组碳酸盐岩储层质量评价

Reservoir Quality Evaluation of Carbonates in the Zhujiang Formation of the Early Miocene Pearl River Mouth Basin

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