新疆石油地质

›› 2013, Vol. 34 ›› Issue (2): 1-1.

• 论文 •    

地下岩石的润湿性分析 ——与李正科先生商榷

李传亮   

  1. (西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500)
  • 出版日期:2019-01-01 发布日期:1905-07-10

Wettability of Underground RocksReply to Mr LI Zhengke

LI Chuanliang   

  1. (State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China)
  • Online:2019-01-01 Published:1905-07-10

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摘要： 岩石的主要矿物是极性物质，地层水的极性比油强，因此，岩石是亲水的，地下没有亲油的岩石。岩石的亲水性质保证了油气运移的顺利进行，亲油岩石把油气散失在运移途中而无法聚集成藏。实测的相渗曲线表明了岩石的亲水性质。油藏压力的正常分布也是岩石亲水性质的证明。亲油岩石根本无法作为盖层封堵油气，只能散失油气。实验室测量到的亲油岩石，没有代表地下情况，因而是没有实际意义的。

Abstract: 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 completed at all. Relative permeability curves measured at laboratory indicate the water?wettability of rocks clearly. The normal distribution 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 be dispersed through them. The oil?wettability of rocks measured at laboratory does not reflect the underground conditions, so it is meaningless

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