Abstract
This paper presents the first ever successful (Sliding Sleeve Door) SSD Jet Pump application in Ghauri oil field located in Jhelum, Pakistan. Ghauri is single completed well flowed with 22 API gravity from Sakessar Formation. Being a solution gas drive reservoir, the initial production rate declined quickly. Where, the jet pump was motivated by the need to use and revive the well without work-over.
Based on initial testing Data, jet pump was selected as a preferred artificial lift method. SSD was installed as a part of initial completion. As per SSD dimensions, downhole jet pump was designed. The pump was operated to enhance/ restore the production of well. During operations, the real time monitoring was conducted to optimize the parameters of pump, such as Nozzle/Throat combination or horsepower. In addition, the life of jet pump was calculated in relation to economic limits of the production.
Based on results, Jet pump was found the most economical and cost-effective artificial lift method for Ghauri. SSD Jet Pump deployment achieved expected performance and reliability. It has allowed the operator to save the cost of work over. The cumulative production with jet lift is folded twice when compared to cumulative production on natural energy. When the well production declined, the jet pump was easily re-optimized by pulling the pump using slick line for changing the nozzle and/or throat. The rest of the pump was unchanged to keep the CAPEX at low. In addition, further production of 200,000 BBLS is expected through jet pump.
