页岩气在超低渗介质中的渗流行为  

FLOW REGIM FOR SHALE GAS IN EXTRA LOW PERMEABILITY POROUS MEDIA

作　　者：姚同玉 黄延章[2] 李继山[3] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580 [2]中国科学院渗流流体力学研究所,河北廊坊065007 [3]胜利油田有限责任公司地质科学研究院,山东东营257015

出　　处：《力学学报》2012年第6期990-995,共6页Chinese Journal of Theoretical and Applied Mechanics

基　　金：国家"十二五"科技重大专项课题"致密砂岩气有效开发与评价技术"资助项目(2011ZX05013-002)~~

摘　　要：基于页岩气藏复杂孔隙结构和页岩气在纳米孔隙表面的滑脱和吸附-解吸附等现象,通过引入表观渗透率,修正Darcy渗流模型,得到了页岩气渗流本构方程.将计算结果与Darcy模型计算结果进行了比照,结果表明,在产量定常情形下,基于非Darcy渗流模型得到的井底压力高于Darcy流结果;Darcy流模型得到的压力衰减速度较快,改进后的渗流模型更能准确描述与表征页岩气渗流过程;研究结果可为页岩气藏的经营与管理提供基础参数.The research on flow mechanism and productivity evaluation of shale gas is still in its infancy.Based on the complex pore structure of shale gas reservoir, slip flow and adsorption-desorption of shale gas, Darcy model is modified. Compared with the Darcy model in production steady case, the bottom hole pressure based on non-Darcy flow model is higher than that from the Darcy flow; the pressure from the Darcy flow model decays more exaggerated and than predicted well life was shorter. The modified flowing model can describe and characterize shale gas flowing process more accurately. The results can provide basic parameters for the operation and management of the shale gas reservoir.

关 键 词：页岩气 非DARCY渗流 滑脱流 吸附-解吸附 KN 

分 类 号：TE348[石油与天然气工程—油气田开发工程]