%0 Journal Article
%T THE STUDY OF TWO PHASE NON-LINEAR FLOW IN LOW PERMEABILITY RESERVOIR<br>低渗透油藏非线性两相渗流研究
%A 时宇
%A 杨正明
%A 杨开菊
%A 黄延章
%J 力学与实践
%D 2008
%I 
%X Darcy formula is not valid for flows in low permeability reservoirs, due to the obvious non-linear characteristics of the flows. Based on the experiment data of low permeability core, a non-linear formula with two parameters is proposed in this paper. Combining with the Buckly-Leverett formula, non-linear displacement formula is obtained. From the solution of the displacement formula, is compared with the linear flow, it is seen that the displacement efficiency of non-linear flow is lower, the water cut is higher with the same $s_{\rm w}$, especially, and the pressure gradient is bigger, which means the higher injection/production pressure difference. So, smaller well distance and higher injection/production pressure difference are needed for effectively developing low permeability reservoirs.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=0BF5C9FB031A532ED0A6D99DC4F6181A&aid=4624F9E9074E345D2B213F0E2C52E5C0&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=94C357A881DFC066&sid=7801E6FC5AE9020C&eid=13553B2D12F347E8&journal_id=1000-0879&journal_name=力学与实践&referenced_num=6&reference_num=7