西南石油大学学报（自然科学版）2025，Vol.47Issue(6)：37-46,10.DOI:10.11885/j.issn.1674-5086.2024.09.12.01
宝岛A深水大气田低渗储层成岩作用及孔隙演化研究
Diagenesis and Pore Evolution in Low-permeability Reservoirs of the Baodao A Deepwater Gas Field
YANG Li 1LI Hua 1WANG Panrong 1PENG Zhichun 1PAN Yan1
作者信息
- 1. Hainan Branch CNOOC China Limited,Haikou,Hainan 570311,China
- 折叠
摘要
Abstract
Baodao A Gas Field is the first deep water and deep gas field discovered in Baodao Depression.The main gas group of the Baodao A Gas Field is the third member of the Lingshui Formation.The water depth of the gas field varies greatly,the fault system is well developed,the reservoir highly heterogeneous,and the diagenetic phenomena abundant.Affected by the diagenetic transformation,the physical properties of the gas field are poor and the distribution law is complex.Therefore,based on the experimental data of thin section of rock,X-ray diffraction of clay minerals,and oxygen isotope analysis,the reservoir physical property,diagenetic characteristics and quantitative evolution of pores of the low permeability reservoir in the third member of Lingshui Formation in the study area are systematically described.The results show that:mechanical compaction reduces the porosity of the reservoir by 22.0%,which is the main factor of reservoir compaction in the third member of Lingshui Formation in the study area.The porosity of the reservoir is increased by 11.9%by solution and decreased by 13.7%by cementation.The process of pore evolution reveals that compaction is the primary factor contributing to early changes in reservoir physical properties,while mineral dissolution during the middle and late stages of oil and gas charging enhances reservoir space.Subsequently,late-stage carbonate cementation further densifies the reservoir.This research achievement effectively guides the prediction research of favorable reservoirs,provides geological basis for the efficient development of gas fields,and lays a foundation for ensuring the country's accelerated advancement into the deep sea.关键词
成岩作用/孔隙演化/低渗储层/成岩序列/深水气田Key words
diagenesis/pore evolution/low permeability reservoir/diagenetic sequence/deepwater gas field分类
能源科技引用本文复制引用
YANG Li,LI Hua,WANG Panrong,PENG Zhichun,PAN Yan..宝岛A深水大气田低渗储层成岩作用及孔隙演化研究[J].西南石油大学学报（自然科学版）,2025,47(6):37-46,10.
