CAJ | 학술논문

水驱曲线在低渗油藏中直线段的出现时间要早于中高渗透油藏，无疑加大了水驱特征曲线在低渗油藏的应用范围。而地层原油黏度是影响油藏含水上升规律的天然因素之一，对于水驱特征曲线具有选择性。尝试推导了利用丁型水驱特征曲线计算低渗低黏度油藏相对渗透率曲线的公式，给出了具体的计算实例，并进行了讨论。认为该方法得到的相对渗透率对于低渗低黏度油藏是具有代表性的，能满足一定的精度要求，具有一定的实用性。
수구곡선재저삼유장중직선단적출현시간요조우중고삼투유장，무의가대료수구특정곡선재저삼유장적응용범위。이지층원유점도시영향유장함수상승규률적천연인소지일，대우수구특정곡선구유선택성。상시추도료이용정형수구특정곡선계산저삼저점도유장상대삼투솔곡선적공식，급출료구체적계산실례，병진행료토론。인위해방법득도적상대삼투솔대우저삼저점도유장시구유대표성적，능만족일정적정도요구，구유일정적실용성。
Straight line segments of water drive curves in low permeability reservoirs appear earlier than in middle and high permea-bility reservoirs. For this reason, water drive curve has found an increasingly wide utilization in low permeability reservoirs. Further-more, oil viscosity is one of the natural factors on water raising law of reservoirs and affects the choice of water drive curves. By us-ing type IV water drive characteristic curve, this paper derived the formula for computing relative permeability curve of low permea-bility and viscosity reservoirs, gave the specific calculation examples and discussed them. Calculation results showed that the rela-tive permeability is typical with certain accuracy and practical value.