天然气储层物性下限及深层气勘探问题的探讨

Cutoffs of Gas Reservoir Parameters and a Discussion on Deep Gas Exploration

本文在总结国内外天然气储层物性资料的基础上,得出孔隙砂岩工业性储气层的物性下限值为:孔隙度9%,渗透率0. I X 10^-3μm^2。考虑到储层物性一般随埋深增加而变差,加之深层气勘探成本高、周期长,在我国当前天然气勘探、研究程度不高的情况下,认为近期找气应以中、浅层为主。

Based on summarizing the data of gas reservoir characteristics at home and abroad,the cutoffs ofcommercial gas reservoir parameters of porous sandstone are obtained:porosity 9%,permeability 0. 1X 10^-3μm^2 Counting the reservoir characteristics being worse with increase of its buried depth and thehigh cost and a long period of deep gas exploration,it is thought that the medium and shallow bedsshould be the main objects for surveying gas in the near future,undcr such a case that the level of thegas exploration and research is not high at present in our country.