- 责任者：Li Chuanliang (State Key Lahoratory ; of Oil/Gas Reservoir Geology and Exploitation ; Southwest Petroleum University ; Chengdu 610500 ; China)
- 刊名：Xinjiang Petroleum Geology
- 出版年：2013
- 卷期：34(2)
- 关键词：储集层 ; reservoirs ; 润湿性 ; wettability
- 页码：p.243-245
- 图表：illus., 11 refs.
- 分类号：1003
- issnNo：ISSN1001-3873
- isbnNo：CN65-1107/TE
Main minerals of rocks are all polar materials. The polarity of formation water is stronger than that of oil, so underground rocks are water-wet and there are no oil-wet rocks underground. The water-wettability of rocks provides the precondition of migration of oil and gas from source rock to trap. Oil-wet rocks will disperse the oil and gas during migration, and can＇t allow the hydrocarbon accumulation to be eompleled at all. Relative permeability curves measured at laboratory indicate the water-wettability of rocks clearly. The normal distribu-tiun of reservoir pressure is also an evidence of water-wettablity of underground rocks. Oil-wet rocks won＇t prohibit the migration of oil and gas as a seal rock but allow oil and gas to he dispersed through them. The oil-wettability of rocks measured at laboratory does not reflect the underground conditions, so it is meaningless.