CAJ | 학술논문

相对渗透率是一个解释多相不可压缩流体在多孔介质中流动的复杂影响的重要参数，以便校正达西单相流动方程。但是影响相对渗透率的因素很多，如：流体饱和度、岩石物性、润湿性、历史饱和度（滞后效应）上覆压力、黏土及颗粒含量、黏度、温度、表面张力、束缚水饱和度、驱替速度和末端效应等。利用桓冠仁、沈平平的均质岩芯一维渗流相渗推导结果，考虑长岩芯驱替室内实验中一维岩芯排列的非均质性和长岩芯逐级调和排序的特点，利用Matlab软件拟合出逐级调和平均渗透率与岩芯累计长度的关系，并反求出绝对渗透率倒数与累计岩芯长度的关系，将关系式由离散模型转化成连续模型，并代入一维均质相渗模型，利用WC油田长岩芯驱替实验数据计算出长岩芯驱替过程中不同位置的相对渗透率曲线，计算结果是可靠的。
상대삼투솔시일개해석다상불가압축류체재다공개질중류동적복잡영향적중요삼수，이편교정체서단상류동방정。단시영향상대삼투솔적인소흔다，여：류체포화도、암석물성、윤습성、역사포화도（체후효응）상복압력、점토급과립함량、점도、온도、표면장력、속박수포화도、구체속도화말단효응등。이용환관인、침평평적균질암심일유삼류상삼추도결과，고필장암심구체실내실험중일유암심배렬적비균질성화장암심축급조화배서적특점，이용Matlab연건의합출축급조화평균삼투솔여암심루계장도적관계，병반구출절대삼투솔도수여루계암심장도적관계，장관계식유리산모형전화성련속모형，병대입일유균질상삼모형，이용WC유전장암심구체실험수거계산출장암심구체과정중불동위치적상대삼투솔곡선，계산결과시가고적。
Relative permeability is an empirical parameter,which interprets the complex effects of the flow of the multi-phase and incompressible fluid in porous media,so as to calibrate Darcy’s single phase flow equation. The relative permeability can be influenced by many factors,such as fluid saturation,physical rock properties,wettability,saturation history,overburden stress,clay and fines content,temperature,interfacial tension,viscosity,magnitude of initial phase saturations,and displace-ment rates and capillary outlet phenomena. Based on the results of Huan Guanren and Shen Pingping’s derivation of relative permeability curve and by considering the character in the displacement experiment whose core arrangement is heterogeneous in one dimension and harmonious arrangement,we got the relationship between cumulative core length and harmonious av-erage permeability by Matlab. And then we reversely solved the relationship between absolute permeability and cumulative core length. We also converted the discrete model into the continuous model. By substituting the above results into the single dimension homogenous model,we obtained the relative permeability curve in different position of the displaced cores in WC oilfield. The result is reliable except for few points that fitted poorly.