西南石油大学学报(自然科学版) ›› 2026, Vol. 48 ›› Issue (2): 17-34.DOI: 10.11885/j.issn.1674-5086.2025.01.15.03

• 地质勘探 • 上一篇    下一篇

西湖凹陷花港组低渗储层成岩作用及优质储层成因

银文斌1, 赵晓明1,2, 葛家旺1,2, 梁岳立1, 王建伟3   

  1. 1. 西南石油大学地球科学与技术学院, 四川 成都 610500;
    2. 天然气地质四川省重点实验室, 四川 成都 610500;
    3. 中国石油化工股份有限公司上海海洋油气分公司, 上海 浦东新区 200120
  • 收稿日期:2025-01-15 发布日期:2026-04-30
  • 通讯作者: 赵晓明,E-mail:zhaoxim98@163.com
  • 作者简介:银文斌,2000年生,男,汉族,河南漯河人,硕士,主要从事油气田开发地质学等方面的研究工作。E-mail:1291288783@qq.com
    赵晓明,1982年生,男,汉族,山东安丘人,教授,博士研究生导师,主要从事油气田开发地质学、深水沉积学、非常规油气地质、二氧化碳封存与利用、人工智能与油气地质等方面的研究工作。E-mail:zhaoxim98@163.com
    葛家旺,1988年生,男,汉族,湖北枝江人,副研究员,主要从事沉积学、层序地层学及开发沉积学等方面的研究工作。E-mail:gjwddn@163.com
    梁岳立,1993年生,男,汉族,湖北黄冈人,博士研究生,主要从事非常规油气地质综合研究。E-mail:liangyl6855@gmail.com
    王建伟,1979年生,男,汉族,河北保定人,高级工程师,硕士,主要从事油气田开发工程方面的工作。E-mail:wjw.shhy@sinopec.com
  • 基金资助:
    四川省国际科技创新合作项目(24GJHZ0465);四川省自然科学基金(2024NSFJQ0065)

Diagenesis of the Low-permeability Reservoir in the Huagang Formation of the Xihu Depression and the Genesis of High-quality Reservoirs

YIN Wenbin1, ZHAO Xiaoming1,2, GE Jiawang1,2, LIANG Yueli1, WANG Jianwei3   

  1. 1. School of Geosciences and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. Sichuan Province Key Laboratory of Natural Gas Geology, Chengdu, Sichuan 610500, China;
    3. Shanghai Offshore Oil & Gas Company, SINOPEC, Pudong, Shanghai 200120, China
  • Received:2025-01-15 Published:2026-04-30

摘要: 西湖凹陷花港组砂体物性普遍较差,局部发育的优质储层往往是油气聚集的关键。基于岩芯、薄片资料、电子探针及分析化验等资料分析储层特征及其主控因素,并建立优质储层的发育模式。结果表明:研究区花三段主要发育特低渗储层、低渗储层和高渗储层,优质储层的孔隙类型以粒间溶孔为主。砂岩储层成岩作用包括压实作用、胶结作用(石英、碳酸盐、黏土)、溶蚀作用。优质储层在演化过程中储层经历过大气水和油气充注的酸性改造,物源和发育强水动力的沉积相带是优质储层发育的有利条件,早期的方解石胶结与晚期油气充注改造是优质储层原生孔隙保护和次生孔隙生成的关键,整体上沉积作用、成岩作用及构造作用在时空上耦合控制了优质储层的形成。

关键词: 致密砂岩, 成岩作用, 储层发育模式, 花港组, 西湖凹陷

Abstract: The porosity and permeability of the sand bodies in the Xihu Depression's Huagang Formation are generally poor, while locally developed high-quality reservoirs are often the key to hydrocarbon accumulation. Based on core, thin section data, electron probe, and analytical testing data, the reservoir characteristics and their main controlling factors were analyzed, and a development model for high-quality reservoirs was established. The results show that the H3 Member in the study area mainly develops ultra-low permeability reservoirs, low-permeability reservoirs, and high-permeability reservoirs, with intergranular dissolution pores being the main pore type of the high-quality reservoirs. The sandstone reservoir diagenesis includes compaction, cementation (quartz, carbonate, clay), and dissolution. During the evolution process, the reservoir has experienced acidic modification by meteoric water and hydrocarbon charging. It was found that the source and strong hydrodynamic depositional facies are favorable conditions for the development of high-quality reservoirs. Early carbonate cementation and late hydrocarbon charging modification are the keys to the protection of primary pores and the generation of secondary pores in high-quality reservoirs. The coupling of sedimentary, diagenetic, and tectonic actions in time and space controls the formation of high-quality reservoirs.

Key words: tight sandstone, diagenesis, reservoir development model, Huagang Formation, Xihu Depression

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