ESP

Electric Submersible Pumps (ESP) consist of a downhole pump (a series of centrifugal pumps), an electrical motor which transforms the electrical power into kinetic energy to turn the pump, a separator or protector to prevent produced fluids from entering the electrical motor, and an electric power cable that connects the motor to the surface control panel. ESP is a very versatile artificial lift method and can be found in operating environments all over the world. They can handle a very wide range of flow rates (from 200 to 90,000 barrels (14,000 m3) per day) and lift requirements (from virtually zero to 10,000 ft (3,000 m) of lift). They can be modified to handle contaminants commonly found in oil, aggressive corrosive fluids such as H2S and CO2, and exceptionally high downhole temperatures. Increasing water cut has been shown to have no significant detrimental effect on the ESP performance. It is possible to locate them in vertical, deviated, or horizontal wells, but it is recommended to deploy them in a straight section of casing for optimum run life performance.

Although latest developments are aimed to enhance the ESP capabilities to handle gas and sand, they still need more technological development to avoid gas locks and internal erosion. Until recently, ESPs have come with an often prohibitive price tag due to the cost of deployment which can be in excess of $20,000.

Various tools such as Automatic Diverter Valves (ADV), SandCats and other Tubing String and Pump Tools enhance the performance of the ESP. The majority of systems deployed in today's market are Dual ESP Systems which is a simple arrangement of two ESPs in the same well. This delivers a complete downhole system booster or back up - downtime is minimal, workovers cost less and there are savings in other operational areas. ESP Dual Systems bring a significant enhancement of well profitability.

In this Blog we will discuss the various components of ESP systems downhole and service equipments , field operations and alternative deployed ESP systems :

1-Downhole Equipments :
                                                     1.1- Pump
                                                     1.2- Intake
                                                     1.3- Gas Seperator
                                                     1.4- AGH
                                                     1.5- Protector
                                                     1.6- Motor
                                                     1.7- Multisensor
                                                     1.8- Y-Tool
2-Service Equipments :
                                                     2.1- Service Equipments
                                                     2.2- Transformer
                                                     2.3- Cable
                                                     2.4- Switchboard
                                                     2.5- VSD
                                                     2.6- Junction Box
                                                     2.7- Well Head
3-Field Operations :
                                                     3.1- ESP Installation Procedure
                                                     3.2- ESP Selection, Deployment and Operation
                                                        3.3- Commissioning and Start up procedure for ESP
                                                        3.4- ESP Troubleshoot Guide 

4-Alternative deployed ESP systems :

                                                     4.1- Alternative deployed ESP systems
                                                     4.2- Advanced Lift Systems : Pod Systems
                                                     4.3- Bubble Shroud Completions