收稿日期: 2005-04-30
修回日期: 2005-11-13
网络出版日期: 2005-12-20
基金资助
黑龙江省教育厅科技项目(编号:105501001)资助.
ON INDIRECT AFFECT OF ABNORMAL PORE FLUID PRESSURE TO THESEAL OF GAS IN EACH PHASE
Received date: 2005-04-30
Revised date: 2005-11-13
Online published: 2005-12-20
付广;康德江; . 异常孔隙流体压力对各种相态天然气的间接封闭作用[J]. 天然气地球科学, 2005 , 16(6) : 700 -705 . DOI: 10.11764/j.issn.1672-1926.2005.06.700
Based on the study of the formation mechanism and conditions of abnormal porefluid pressure. The affect of abnormal pore fluid pressure to the seal of gas in each phase was deeply studied. Abnormal pore fluid pressure was considered notto seal gas in free phase directly, it can play an indirect role in sealing gas in free phase through increase of capillary seal ability of mudstone caprock.Abnormal pore fluid pressure was considered not also to seal gas in water-dissolving phase directly, it can play an indirect role in sealing gas in water-dissolving phase through increase of adsorptive fore of mudstone caprock. Abnormal pore fluid pressure was considered not to seal gas in diffusion phasedirectly,it can play an indirect role in sealing gas in diffusion phase through the formation of abnormal gas-bearing concentration of mudstone caprock.
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