论文部分内容阅读
液氮助排是在气藏地层压裂后或者开发中后期过程中一项重要采气工艺,液氮助排可及时排除压裂后井底未及时排出的压裂液,提高压裂液的返排率,降低压裂液对地层和填充裂缝伤害,缩短作业周期,提高气井产量;另外气田开发中后期产生井筒积液会导致气井产量下降甚至停产,及时排出积液,可以提高单井产量,延长生产寿命。
Liquid nitrogen aiding drainage is an important gas production process after fracturing of the gas reservoir or in the middle and late stages of development. The liquid nitrogen aids drainage can promptly eliminate the fracturing fluid that is not discharged in time after the fracturing and improve the fracturing fluid Return rate, reduce the fracturing fluid damage to the formation and filling cracks, shorten the operation cycle, increase gas production; other gas wells in the late production of wellbore will lead to gas well production down or even stop production, and timely discharge of effusion can improve single-well production , To extend production life.