CAJ | 학술논문

　　指出了大涝坝高含凝析油凝析气藏衰竭式开发过程中，当地层压力下降至低于露点压力，地层出现反凝析现象，特别是近井地带压降漏斗的存在，析出的凝析油更多，严重污染了井筒周围的储层，造成渗流阻力增大，致使气井产能递减快。结合数值模拟研究表明：注气能有效降低凝析气藏反凝析油的析出，改善其开发效果，为注气提高采收率提供理论依据。
　　지출료대로패고함응석유응석기장쇠갈식개발과정중，당지층압력하강지저우로점압력，지층출현반응석현상，특별시근정지대압강루두적존재，석출적응석유경다，엄중오염료정통주위적저층，조성삼류조력증대，치사기정산능체감쾌。결합수치모의연구표명：주기능유효강저응석기장반응석유적석출，개선기개발효과，위주기제고채수솔제공이론의거。
the Dalaoba Reservoir belongs to the rich condensate oil saturated gas reservoir .In the depleted de-velopment process ,w hen the formation pressure drops dow n the dew point pressure ,there occurs retrograde condensate phenomena in the formation ,especially due to the pressure drop occurs near the well bore ,and fil-trational resistance will increase ,which results in the rapid declination of gas -well deliverability in gas well . Combined with the numerical simulation study ,it has been proved that the gas injection can effectively reduce the precipitation of retrograde condensation for the gas condensate reservoir ,and improve its development ef-fectiveness .T herefore ,it provides a theoretical basis for the gas injection enhanced oil recovery .