Definition - What does Backpressure mean?

Backpressure is the pressure that is exerted by a fluid flowing within a confined space. In any producing well, backpressure is exerted by hydrocarbons due to an increase in pressure in the reservoir. This pressure is transferred upward to the surface through the well casing and if it is not prevented it can cause serious damages to the developed well and equipment.

Petropedia explains Backpressure

Backpressure in any producing well is dangerous to the drilling rig, drilling equipment, crew members and well casings. It is very important to make arrangements to control the pressure so as to avoid catastrophes. This pressure can be controlled by installing a blowout preventer (BOP). Backpressure that is caused by a blowout is usually due to uncontrolled flow of gas, oil or water from a reservoir to the surface. It is one of the worst incidents which can cause a lot of damage to the well and drilling equipment. In order to prevent damage and ensure the safety of the workers at the drilling site back pressure should be controlled at all times.

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