井口气回收优化工艺的应用

Application of Optimized Technology of Well Gas Recovery

长庆油田公司苏里格气田属于低渗、低压、低丰度的典型“三低”气田,气井普遍具有单井产量低、携液能力差的特点。随着气田采出程度的提高,气藏能量降低,相当一部分气井进入中晚期开采阶段,气井难以自喷带水生产,部分气井因井筒积液导致天然气开采减产甚至关井停产的情况,影响了气井产能的发挥。产量不达标,投资成本难收回,从而严重制约了油田井口气回收项目的开展。如何消除井内积液对天然气开采造成的影响,实现复产、增产,是现在井口天然气回收业务所需解决的问题。

Sulige gas field of Changqing Oilfield Company is a typical “three low” gas field with low permeability, low pressure and low abundance. The gas wells generally have the characteristics of low single well production and poor liquid carrying capacity. With the increase of the recovery degree of the gas field, the energy of the gas reservoir decreases, and a considerable number of gas wells enter the middle and late stage of production. It is difficult for the gas wells to produce water by spontaneous injection, and some gas wells are reduced or even shut down due to wellbore effusion, this has affected the production capacity of gas wells. The production is not up to standard, and the investment cost is difficult to recover, which seriously restricts the development of the oilfield well gas recovery project. How to eliminate the impact of fluid accumulation in the well on natural gas production and realize the resumption of production and production increase is a problem that needs to be solved in the wellhead natural gas recovery business.