CAJ | 학술논문

使用XL30扫描电子显微镜,采用新的膨胀倍率评价方法,从微观角度测定了新型孔喉尺度调堵剂微球的形态和嘭胀倍率,研究了温度、矿化度和水化膨胀时间对微球膨胀性能的影响规律.微球的粒径膨胀倍率随着温度的升高而逐渐增大,随着矿化度的升高而逐渐减小,随着水化时间的延长而逐渐增大,最终趋于稳定;调堵剂微球在尕斯油藏地层水矿化度为17 4501 mg/L、油藏温度126℃下膨胀15 d,其粒径膨胀倍率为3.93,表现出良好的抗温抗盐和老化稳定性.通过多测压点长岩心填砂管实验,研究了调堵剂微球的运移封堵性能.调堵剂徽球具有良好的注入性和一定的封堵能力.利用天然岩心进行驱油实验,提高采收率达11.80%.
사용XL30소묘전자현미경,채용신적팽창배솔평개방법,종미관각도측정료신형공후척도조도제미구적형태화팽창배솔,연구료온도、광화도화수화팽창시간대미구팽창성능적영향규률.미구적립경팽창배솔수착온도적승고이축점증대,수착광화도적승고이축점감소,수착수화시간적연장이축점증대,최종추우은정;조도제미구재소사유장지층수광화도위17 4501 mg/L、유장온도126℃하팽창15 d,기립경팽창배솔위3.93,표현출량호적항온항염화노화은정성.통과다측압점장암심전사관실험,연구료조도제미구적운이봉도성능.조도제휘구구유량호적주입성화일정적봉도능력.이용천연암심진행구유실험,제고채수솔체11.80%.
The microscopic feature and the expansion multiplying factor of new pore-throat scale microsphere As Profile Control Agent are measured using XL30 Scanning Electron Microscope and new expansion multiplying factor evaluation method.The effeets of temperature. salinity and swelling time on expansion performance of microsphere are analyzed.The resnlts show that the expansion multiplying factor of microspher's grain diameter gradually increases with the temperature and the swelling time increasing,decreases with the salinity increasing,and ultimately being stable.In Gasi reservoir,this expansion multiplying factor is 3.93 after the microsphere expanded for 15 days under the circumstances of formation water(17 4501 mg/L)and temperature (126℃),showing good temperature resistance,salinity resistance and stability.The performance of migration and plugging of the microsphere As Profile Control Agent is studied by the long core test,showing that it has good injectivity and plugging capacity.The core displacement test indicates that the EOR given by such a new microsphere approach is up to 11.80%.