CAJ | 학술논문

UDM 区块目前在开发中存在层内、层间的水驱程度差异大，剖面动用状况差，开发效果差等问题。凝胶体系的阻力系数是在几乎未发生交联反应时体系的阻力系数，故同聚合物溶液一样，使注入流体黏度增大，降低流度比，提高采收率；交联聚合物溶液成胶后，黏度迅速增大，后续水驱注入压力升高，水相渗透率降低，凝胶体系具有较好的封堵性。其中残余阻力系数更大体系，说明其成胶后的滞留封堵作用也更强，通过室内模拟实验优选了聚合物弱凝胶体系的调驱轮次、调驱时机以及调驱剂注入量。结果表明，对于渗透率级差为6的多岩心并联实验，聚合物弱凝胶调驱可在水驱基础上提高采收率10%~15%左右。
UDM 구괴목전재개발중존재층내、층간적수구정도차이대，부면동용상황차，개발효과차등문제。응효체계적조력계수시재궤호미발생교련반응시체계적조력계수，고동취합물용액일양，사주입류체점도증대，강저류도비，제고채수솔；교련취합물용액성효후，점도신속증대，후속수구주입압력승고，수상삼투솔강저，응효체계구유교호적봉도성。기중잔여조력계수경대체계，설명기성효후적체류봉도작용야경강，통과실내모의실험우선료취합물약응효체계적조구륜차、조구시궤이급조구제주입량。결과표명，대우삼투솔급차위6적다암심병련실험，취합물약응효조구가재수구기출상제고채수솔10%~15%좌우。
Currently, there are some problems in UDM block development, such as large difference of water flooding degree between the layers, poor cross section utilization degree, and poor development effect and so on. The resistance coefficient of gel system is the resistance coefficient when the cross linking reaction does not occur, the gel system can increase viscosity, educe mobility ratio and enhance oil recovery, as polymer solution. When cross linked polymer solution becomes into a gel, the viscosity increases rapidly, and injection pressure of subsequent water flood increases. At the same time, the water permeability reduces, therefore, the gel system has good sealing performance. The greater the residual resistance factor of system, the stronger the action of closing off. By indoor simulation experiments, round of adjusted flooding of polymer weak gel system, injection timing and injection volume were optimized. The results show that in the experiment of multi-core parallel whose differential permeability is 6, the oil recovery can be enhanced about 10% ~15% on the basis of water flooding.