Roles of gypsum/salt-bearing sequence in hydrocarbon accumulation and storage  

作　　者：Wenhui Liu Yining Li Quanyou Liu Xiaofeng Wang Qingqiang Meng Dianwei Zhang Longfei Lu Houyong Luo 

机构地区：[1]Department of Geology,State Key Laboratory of Continental Dynamics,Northwest University,Xi'an,Shaanxi,710069,China [2]Petroleum Exploration&Production Research Institute,SINOPEC,Beijing,100083,China [3]Sinopec Key Laboratory of Petroleum Accumulation Mechanisms,Wuxi,Jiangsu,214151,China

出　　处：《Energy Geoscience》2023年第1期93-102,共10页能源地球科学（英文）

基　　金：This study was funded by a key project of the National Natural Science Fund of China(41930426);a key project of the Petrochemical Joint Fund(U1663201).

摘　　要：Gypsum/salt beds are widely developed in petroliferous basins across the world.Most basins with gypsum/salt beds have been proven to host abundant hydrocarbon resources.Previous studies on the effects of gypsum/salt beds on hydrocarbon reservoirs primarily focused on their excellent sealing property as cap rocks.However,an increasing number of exploration discoveries have shown that gypsum/salt beds have the potential to promote the formation of high-quality source rocks and hydrocarbon reservoirs.Gypsum/salt beds influence the generation,preservation and accumulation of hydrocarbons.Based on the systematic analysis of the generation of hydrocarbons in global gypsum/saltbearing sequences,the study discussed the control of gypsum/salt beds on play elements,and explore the relationship between the development of gypsum/salt beds and global large-and medium-scale hydrocarbon reservoirs.Furthermore,we analyzed the correlation between typical gypsum/saltbearing sequences and their hydrocarbon generation potentials in China.In-depth analysis shows three patterns in terms of the spatial superimposition of gypsum/salt beds and source rocks,that is,postsalt pattern,inter-salt pattern and pre-salt pattern.Among others,the source rocks of the inter-salt pattern are widely developed in salt basins and of great potential for hydrocarbon exploration.

关 键 词：Gypsum/salt bed Hydrocarbon reservoir Source rock Play element 

分 类 号：P618.13[天文地球—矿床学]