摘要
在地层评价中 ,束缚水饱和度是体积法计算储量时的重要参数之一。本文采用 3种方法—吸附法、脱附法及非稳态气驱水法对某气田侏罗系储层致密岩样进行了束缚水饱和度实验研究。文中给出了详细的实验原理、实验方法和实验步骤 ,并对这 3种方法取得的实验结果进行了分析和比较。实验表明 :3种方法测定的束缚水饱和度比较一致 ,且与孔隙度呈负相关关系。综合 3种方法的实验结果 ,得到了该气田侏罗系储层孔隙度与束缚水饱和度之间的相关方程。
In reservoir assessment,the irreducible water sa turation is one of the important parameters of estimating reserves by volumetric method.An experimental research on the irreducible water saturations of the tig ht rock samples collected from the Jurassic reservoirs in one gas field was carr ied out by use of three methods-dsorption method,desorption method and unstead y state gas drive water method.In the paper,the experimental theory,methods and procedures are given out and the experimental results achieved by the three meth ods are analyzed and compared with.Through experiment it is shown that the irred ucible water saturations measured with the three methods are identical to each o ther and have a negative correlation with porosities.An equation expressing the correlation between porosities and irreducible water saturations of the Jurasssi c reservoirs in the gas field is derived from synthesizing the experimental resu lts achieved by the three methods.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2002年第z1期110-113,共4页
Natural Gas Industry
关键词
致密砂岩
束缚水饱和度
吸附
实验室
研究
脱附
非稳态相
气驱
水
Tight sandstone,Irreducible water saturation,Adsorpti on,Laboratory,Research,Desorption,Unsteady state phase,Gas drive,Water
