ESP (Electric Submersible Pump)

An electric submersible pump (ESP) is a type of centrifugal pump that is designed to be operated underwater, typically in oil or gas well applications. The ESP is a complete system that includes an electric motor, a pump, and a seal assembly that is designed to operate underwater while being powered by electricity. These pumps are commonly used to pump fluids such as oil, water, or natural gas from a well to the surface.

The electric submersible pump typically has several key components, including: • The motor: The electric motor is the power source for the pump and is typically a three-phase induction motor. The motor is designed to be water-cooled and is typically rated for operation in the range of 200 to 600 volts. • The pump: The pump is typically a centrifugal pump that is designed to handle liquids with a high solids content. The impeller and diffuser are typically made of a hard metal alloy such as stainless steel or a hard plastic material such as polyurethane. • The seal assembly: The seal assembly is designed to prevent fluids from entering the motor and is typically made of a combination of mechanical seals and/or lip seals.

The engineering specifications for the electric submersible pump are: • Flow rate: typically from 100 to 20,000 gallons per minute (GPM) • Head: typically from 50 to 5,000 feet • Power: typically from 1 to 400 horsepower (HP) • Voltage: typically from 200 to 600 volts • Temperature: typically from -20°F to 350°F • Standard: API 11S

The electric submersible pump is designed to be both durable and efficient, with a range of features that make it well-suited for use in oil and gas well applications. Its ability to pump fluids with a high solids content and its high head and flow rate capabilities make it a great option for various applications such as oil and gas production, water injection, and more. Additionally, the standardization of the pumps makes it easy to find a replacement or upgrade. The seal assembly provides an additional level of safety, preventing fluids from entering the motor and causing damage.

Drilling BOP (Blowout Preventer) A drilling BOP (Blowout Preventer) is a specialized piece of equipment that is used to control the pressure and flow of fluids in a well during drilling operations. It is a critical safety device that is designed to prevent blowouts, which can cause fires, explosions, and environmental damage. A BOP typically consists of a series of valves, actuators, and rams that can be used to shut off the well in the event of an emergency.

DEG Reboiler (Diethylene glycol) A DEG (diethylene glycol) reboiler is a type of reboiler used in the chemical and petrochemical industries to heat and vaporize a liquid stream. It is typically used in the process of distillation and is designed to help separate and purify different components of a liquid mixture. DEG reboilers are typically used in the production of chemicals such as ethylene glycol and diethylene glycol.

What was Causing the Discharge Pressure to Keep Going High? Finding the right equipment at the right time can be a challenge when you are busy optimizing your asset. Like most companies, we have our standard procurement procedures which work just fine most of the time, and fortunately our purchasing department was also quite reasonable whenever issues came up (which always seemed to be at 1am on Saturday nights, for some reason). The turnaround had gone pretty well, a little longer than scheduled, but nothing major had been found during the inspections. The plant had been all buttoned up and the project team was finished, and the production team was starting things up when the compressors tripped on high pressure.

Sources list:
Image from https://www.researchgate.net/figure/Main-components-of-an-electrical-submersible-pump-ESP
Image from https://www.youtube.com/watch?v=L0Q6cboXyLY

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