[an error occurred while processing this directive] 世界地质 2020, 39(2) 368-378 DOI:   10.3969/j.issn.1004-5589.2020.02.011  ISSN: 1004-5589 CN: 22-1111/P

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火山碎屑岩
溶蚀孔隙
火山岩储层
陆家堡凹陷
松辽盆地
本文作者相关文章
冷庆磊
黄玉龙
冉波
张甲明
王璞珺
PubMed
Article by Leng Q
Article by Huang Y
Article by Ran B
Article by Zhang J
Article by Wang P
火山碎屑岩储层溶蚀孔隙发育特征与控制因素:以松辽盆地南部陆家堡凹陷下白垩统为例
冷庆磊1, 黄玉龙1,2, 冉波3, 张甲明3, 王璞珺1,2
1. 吉林大学地球科学学院, 长春 130061;
2. 东北亚生物演化与环境教育部重点实验室(吉林大学), 长春 130026;
3. 中国石油辽河油田分公司勘探开发研究院, 辽宁盘锦 124010
摘要: 笔者依据钻井岩芯和薄片鉴定,通过铸体薄片、扫描电镜分析和面孔率测定结合钻井含油气性资料,探究储层溶蚀孔隙的形成机理、发育特征与控制因素。结果表明:研究区火山碎屑岩发育4类14种基本岩石类型,凝灰岩类储层面孔率最高(5.6%~9.5%),储层有效孔隙主要为次生溶蚀孔隙(平均占总孔隙的89.6%)。共识别出3类6种溶蚀孔隙,岩石组构的不同导致岩石组分差异性溶蚀,溶蚀组分以填隙物(沸石、方解石)和晶屑为主,岩屑、角砾次之。早期胶结物充填有利于原生粒间孔隙空间的保存,是次生溶蚀孔隙形成的重要前提条件,构造裂缝增强孔隙连通性,上覆九佛堂组烃源岩生烃过程中产生的有机酸提供了溶蚀流体来源,喷发界面之下是有利储层发育区。
关键词 火山碎屑岩   溶蚀孔隙   火山岩储层   陆家堡凹陷   松辽盆地  
Characteristics and controlling factors of dissolution pores in pyroclastic rock reservoirs: a case study of Lower Cretaceous of Lujiapu sag, southern Songliao Basin
LENG Qing-lei1, HUANG Yu-long1,2, RAN Bo3, ZHANG Jia-ming3, WANG Pu-jun1,2
1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. Key Laboratory for Evolution of Past Life and Environment in Northeast Asia(Jilin University), Ministry of Education, Changchun 130026, China;
3. Exploration and Development Research Institute, Liaohe Oilfield Company, CNPC, Panjin 124010, Liaoning, China
Abstract: Based on the observation and description of drilling cores and thin sections, the authors explored the formation mechanism,development characteristics and controlling factors of dissolution pores in the reservoirs through casting thin section analysis, scanning electron microscope analysis and surface porosity measurement combined with oil-gas-bearing information from drilling data. The results show that 14 sub-types of 4 basic rock types are developed in the pyroclastic rocks in the study area. The tuff-type reservoirs have the highest facial porosity (5.6%~9.5%), and the effective pores in the reservoirs are mainly secondary dissolution pores (averaging 89.6% of the total pores). 6 sub-types of 3 types of dissolution pores were identified. Different rock fabrics leads to differential dissolution of rock compositions. The dissolution components mainly consist of interstitial materials (zeolite, calcite) and crystal fragment, and followed by debris and breccia. Early cementing is favorable for the preservation of primary intergranular pore space and is an important prerequisite for the formation of secondary dissolution pores. Tectonic fractures enhance pore connectivity. Organic acids produced during the hydrocarbon generation of the overlying source rocks of the Jiufotang Formation provide a source of dissolution fluid. Under the eruptive interface is the favorable reservoir development area.
Keywords: pyroclastic rock   dissolution pore   volcanic reservoir   Lujiapu sag   Songliao Basin  
收稿日期 2019-12-05 修回日期 2020-01-13 网络版发布日期  
DOI: 10.3969/j.issn.1004-5589.2020.02.011
基金项目:

国家自然科学基金项目(41702128)与中国石油天然气股份有限公司重大科技专项(2017E-1601)联合资助。

通讯作者: 黄玉龙(1982-),男,博士,副教授,主要从事油气储层地质学与火山地质学方面的研究。E-mail:long@jlu.edu.cn
作者简介:
作者Email: long@jlu.edu.cn

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