成都理工大学学报（自然科学版）Issue(2)：218-224,7.DOI:10.3969/j.issn.1671-9727.2015.02.10
温度、压力对莺-琼盆地储层岩石物性影响的实验研究
Experimental study on effects of temperature and stress on properties of reservoir rocks in Yinggehai and Qiongdongnan basin,South China Sea
摘要
Abstract
In order to study the effects of temperature and pressure on the properties of reservoir rocks,the authors use a testing system of rock physical parameters with high temperature and high pressure to measure the porosity and permeability of the sandstone reservoir rocks in the middle-deep formation of the Yinggehai and Qiongdongnan basin by nitrogen gas.The test results show that the thermal expansion of the reservoir rocks under high temperature will induce a slight decreasing of the porosity and permeability of the rocks.The thermal expansion effect is very small on the porosity (<3% in variation rate),but the effect is relatively large on the permeability (8% in average variation rate),and the smaller throats in rocks,the greater effect of the thermal expansion on the permeability.The decreasing extent of the porosity and permeability induced by confining pressure under high temperature (170℃)is larger than that induced only by temperature,and the porosity of rocks variation is controlled by the size of the original pore space and argillaceous content.There is a restraint effect on the permeability decreasing of rocks under high temperature.These special sensitive characteristics of pressure and temperature showed by the tested rock samples are mainly controlled by the stiff particle content and cementation intensity of rocks.关键词
莺-琼盆地/砂岩/高温高压/孔隙度/渗透率Key words
Yinggehai and Qiongdongnan basin/sandstone/high temperature and pressure/porosity/permeability分类
能源科技引用本文复制引用
谢玉洪,单钰铭,李绪深,周文,童传新,王磊..温度、压力对莺-琼盆地储层岩石物性影响的实验研究[J].成都理工大学学报（自然科学版）,2015,(2):218-224,7.基金项目
国家重大科技专项（2011ZX05023-04）。 （）
