气润湿性岩石表面吸附气体性能  

GAS ADSORBING CAPACITY FOR THE SURFACE OF GAS-WETTED ROCKS

作　　者：蒋官澄[1,2] 李颖颖[1,2] 宣扬[1,2] 张弘[1,2] 霍明明 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]新疆石油工程建设有限责任公司,新疆克拉玛依834000

出　　处：《大庆石油地质与开发》2014年第1期92-95,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学杰出青年科学基金项目"多孔介质油气藏气润湿性基础理论研究"(50925414);国家自然科学基金项目"复杂地质条件下提高井壁稳定性新方法研究"(51074173)

摘　　要：油气储层岩石的润湿性不仅影响液体在孔隙中的位置和分布,也会影响气体对岩石的吸附作用。采用AST系列煤层气吸附/解吸实验装置,以石英砂模拟油气储层岩石,对气润湿反转前后甲烷气的吸附能力进行了实验研究和机理探讨。气润湿反转后,石英砂对甲烷气的吸附能力下降大约一个数量级,其根本原因是表面能的降低导致气体吸附能力变弱。The wettabilities of reservoir rocks not only influence the position and distribution of the reservoir fluids in porous media, but also affect the gas adsorbability of the gas to the rocks. With the help of AST-series CBM ad- sorbing/desorbing experimental devices, the experimental researches and principal exploration are conducted for the adsorption power of the methane before and after the invertion of the gas wettability. After the invertion, the power of the quartz sand to the methane drops about one grade, the basic reason is that the decrease of the surface energy results in the weakness of the adsorbability of the gas.

关 键 词：气润湿性 储层岩石 表面能 甲烷 吸附 

分 类 号：TE258[石油与天然气工程—油气井工程]