渤中29-4油田自产气气举-电潜泵组合举升工艺增产方法研究

Study on gas and ESP combination lift using self-produced gas for production increase in Bozhong29-4 Oilfield

针对渤中29-4油田存在的油气层分采开采周期长、采收率低，且海上平台电力负荷达到上限，无法满足多井同时生产的问题，提出气举-电潜泵组合举升工艺，利用生产井自产气气举实现单井油气同采。以油层、井筒、电潜泵子系统和气举子系统组成的生产系统为对象，采用节点分析与双系统耦合设计的方法，以气举和电潜泵系统高效协调生产为目标，以电潜泵功率为依据，明确不同生产条件下各子系统工作参数的设计方法与步骤，最终确定合理的、最优化的工艺参数设计方案。通过某井计算结果表明，在产液量不变的情况下，与单电潜泵举升系统相比，组合举升工艺中电潜泵所需级数和功率有效降低，分别降为原来的40.2%和40.6%，解决了单一举升工艺系统负荷过大的问题，从而保证多井同时生产，提高平台产量。

Due to the separate production of gas and oil,the production cycle is too long and the recovery ratio is low in Bozhong29-4Oilfield,and the electric load cannot meet the needs of multi-well production at the same time since it reached its upper limit.Aiming at these problems,gas and ESP combination lift was proposed using the self-produced gas in the production wells to achieve the goal of oil and gas production at the same time.Production system composed of reservoir,wellbore and ESP-gas lift system was taken as the study object.The method of node analysis and dual system coupling design was used.Regarding the efficient coordination of production of gas lift and ESP as the goal,the method and steps of working parameters design under different conditions were given based on the power of the ESP.The optimized production project was determined eventually.The calculation results of a certain well show that the combination lift can effectively reduce the pump series and pump power to40.2%and40.6%of the original compared with single ESP lift system under the condition of same flow rate.The problem of large load of single lift system was solved,so that multiple wells can product at the same time and the production of platform may be increased.