求准高含量蒙皂石砂岩孔隙度、渗透率的校正方法  

Correction Method for Acquiring Smectite-Rich Sandstone Porosity and Permeability

作　　者：张丽霞[1] 李培俊[1] 

机构地区：[1]中国石油新疆油田分公司准东采油厂,新疆阜康831511

出　　处：《新疆石油地质》2008年第5期648-649,共2页Xinjiang Petroleum Geology

摘　　要：对于像富含蒙皂石这种遇水膨胀、加温脱水收缩的高膨胀含粘土砂岩,按常规岩心方法钻取、洗油、烘样,测定出来的孔隙度、渗透率数据存在偏高的现象,反映的不是地层真实孔隙度和渗透率。为了解决这一问题,提出了一种求准高蒙皂石砂岩孔隙度、渗透率的校正方法,校正后的数据反映了地层的真实孔隙度、渗透率,避免了高膨胀含粘土砂岩储集层因脱水收缩造成孔隙度、渗透率偏高的现象。Smectite-rich sandstone is characterized by water swelling and high-temperature dehydration and contraction. Its porosity and permeability measured by core sampling, wash oil and dry sample tend to being higher than the real values. For this reason, this paper proposes a correction method for acquiring real porosity and permeability of smectite-rich sandstone. The corrected values can get rid of these situations above mentioned.

关 键 词：蒙皂石 孔隙度 渗透率 校正系数 

分 类 号：TE125.1[石油与天然气工程—油气勘探]