CAJ | 학술논문

随着常规油气资源的枯竭，超低渗透油藏已成为我国能源增储上产的主要物质基础。其中相对渗透率曲线对油田开发起到至关重要的作用。而微观孔喉结构对相对渗透率影响巨大。但是目前的相对渗透率的计算方法无法体现微观孔喉结构的影响。因此利用通过室内物理实验的结果，通过修正Brooks‐Corey模型建立了考虑边界层、贾敏效应和微观孔喉分布的相对渗透率计算方法。结果表明，相同渗透率的长庆超低渗透油藏孔喉分布范围更大，导致长庆超低渗透油藏两相区更宽，油相相对渗透率更大，高含水阶段相渗变化更剧烈。对于大庆和长庆超低渗透油藏的成功开发奠定了坚实的理论基础。
수착상규유기자원적고갈，초저삼투유장이성위아국능원증저상산적주요물질기출。기중상대삼투솔곡선대유전개발기도지관중요적작용。이미관공후결구대상대삼투솔영향거대。단시목전적상대삼투솔적계산방법무법체현미관공후결구적영향。인차이용통과실내물리실험적결과，통과수정Brooks‐Corey모형건립료고필변계층、가민효응화미관공후분포적상대삼투솔계산방법。결과표명，상동삼투솔적장경초저삼투유장공후분포범위경대，도치장경초저삼투유장량상구경관，유상상대삼투솔경대，고함수계단상삼변화경극렬。대우대경화장경초저삼투유장적성공개발전정료견실적이론기출。
As conventional oil and gas resources are exhausted ,ultra‐low permeability reser‐voirs are the basis of the energy in the country .Relative permeability curves are the key fac‐tor to development .Micro pore and throat structure has a significant effect on relative perme‐ability curves .However ,existing methods to calculate permeability curves cannot take micro pore and throat structure into consideration .T herefore in this paper a new method consider‐ing the effect of boundary ,Jamin and micro pore‐throat distribution is established by modi‐fied Brooks‐Corey model .It is found that compared to ultra‐low permeability reservoir of Daqing Field ,Daqing Field has a wider distribution of pore and throat .As a result ,the region of two phase of Changqing Field is wider .Oil relative permeability of Changqing Field is lar‐ger .Relative permeability curve of Changqing Field changes more seriously when water cut is high .That is the theoretical basis to the successful development for Changqing and Daqing Field .