Brammer Broadcast
ELECTRIC SUBMERSIBLE PUMPS: CONSIDERATIONS TO OPTIMIZE PRODUCTION
Each ESP system should be designed based on the specific wellbore geometry, reservoir characteristics, and desired production rates. What is the wellbore geometry? What are the casing and/or liner sizes? ESP systems can be applied in both vertical and deviated wellbores with casing sizes as small as 4-1/2" in diameter. Ideally, the wellbore was drilled and completed with the desired ESP system design in mind. What is the bottom hole pressure and temperature? What is the specific gravity of the produced oil, water, and gas? What is the gas/liquid ratio? Is the well located in a corrosive environment? If so, what kind of chemical treating program is in place? ESP's can be applied in many different reservoir environments but it may be necessary to include additional equipment options or upgrade the components of the system. What are the desired production rates? What is the desired setting depth? What kind of power supply is in place at the surface? All of these questions need to be considered so both the downhole and surface equipment are sized and designed to ensure operational efficiency of the entire ESP system.

Poorly monitored ESP systems can decrease wellbore performance and reduce the run life of the equipment. Is the pump intake pressure dropping below or rising above the desired levels? Are there any associated gas interference issues? The surface control equipment controls allow field personnel to closely monitor the ESP system and to make adjustments to the downhole equipment when necessary. ESP's are designed to run at all times so it is important that the systems are closely monitored by both the operator and service provider. Additional equipment options can be included within the surface equipment so that the system can be monitored remotely.

With a comprehensive range of ESP systems being offered, it is important that the entire system is properly designed and effectively monitored to ensure production is optimized. Routinely re-evaluating all available wellbore data and ESP equipment will help extend the economic producing life of the well. 



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