What is swab in oil industry?

1. vb. [Drilling] To reduce pressure in a wellbore by moving pipe, wireline tools or rubber-cupped seals up the wellbore. If the pressure is reduced sufficiently, reservoir fluids may flow into the wellbore and towards the surface.

What is a master valve in oil field?

1. n. [Well Completions] A valve located on the Christmas tree that controls all flow from the wellbore. A correctly functioning master valve is so important that two master valves are fitted to most Christmas trees.

What is a wing valve in oil and gas?

A wing valve is a piece of flow-control equipment used in oil and gas operations. It is part of a Christmas tree and used to shut in flow from a producing well. Subsea and surface trees have a large variety of valve configurations, including combinations of manual and actuated (hydraulic or pneumatic) valves.

What is a gas surge?

A surge is the transient sudden rise or fall of pressure in a pipeline. Surge pressure in excess of the rated capacity of a pipeline can cause ruptures of the piping system.

What is swab valve?

1. n. [Well Workover and Intervention, Well Completions] The topmost valve on a Christmas tree that provides vertical access to the wellbore.

Whats a swab rig?

A swab rig operator drives to the well to be swabbed or serviced. Swab tools allow fluids to flow up through and past to above the swab cups, as the winch drum with cable lowers cable and tooling into the well into the fluids.

What is a master valve?

A master valve is a “normally closed” valve installed at the supply point of the main line that opens only when the controller initiates a watering program. Whenever one of the irrigation zone valves is told to open by the controller, the controller also signals the master valve to open.

What is the function of swab valve?

On a Christmas tree, a swab valve is the topmost valve providing vertical access to the well for well intervention operations conducted by wireline, slickline, coiled tubing or a snubbing unit.

What type of valve is a wing valve?

The kill wing valve is another manual valve which is the connection point for injection. Fluid such as corrosion preventers, methanol, dehydration formulas, etc. can be injected via this valve. They are also known as side-arm valves or secondary wing valves.

What can surge?

The most common cause of power surges is using too many high-power electrical devices at once. Appliances like air conditioners, refrigerators, space heaters, etc. draw a lot of electricity to power components like compressors and motors, which can impact voltage within your home’s electrical system.

What happens during compressor surge?

Surge is a condition that occurs in compressors when the amount of gas they are trying to compress is insufficient for the size of the compressor and the blades lose their ability to transfer energy from the shaft to the fluid, causing a reverse flow of the gas.

What type of valve is a choke valve?

Choke valve, sometimes also known as ‘choker valve’ is a type of control valve, mostly used in oil and gas production wells to control the flow of well fluids being produced. Another purpose that the choke valves serve is to kill the pressure from reservoir and to regulate the downstream pressure in the flowlines.