西南石油大学学报（自然科学版）2026，Vol.48Issue(2)：17-34,18.DOI:10.11885/j.issn.1674-5086.2025.01.15.03
西湖凹陷花港组低渗储层成岩作用及优质储层成因
Diagenesis of the Low-permeability Reservoir in the Huagang Formation of the Xihu Depression and the Genesis of High-quality Reservoirs
摘要
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 inter-granular 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 de-positional 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.关键词
致密砂岩/成岩作用/储层发育模式/花港组/西湖凹陷Key words
tight sandstone/diagenesis/reservoir development model/Huagang Formation/Xihu Depression分类
能源科技引用本文复制引用
银文斌,赵晓明,葛家旺,梁岳立,王建伟..西湖凹陷花港组低渗储层成岩作用及优质储层成因[J].西南石油大学学报（自然科学版）,2026,48(2):17-34,18.基金项目
四川省国际科技创新合作项目(24GJHZ0465) （24GJHZ0465）
四川省自然科学基金(2024NSFJQ0065) （2024NSFJQ0065）
