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What is choke valve in wellhead?

What is choke valve in wellhead?

A choke valve is a mechanical device that induces restriction in a flow line, causing either a pressure drop or a reduction in the rate of flow. See Figure 1. In the context of the upstream oil and gas industry, choke valves are used wherever there is a requirement for wellhead flow and pressure control.

What is choke in an oil well?

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.

What are the types of choke valve?

Choke Valves

  • External sleeve. Our external sleeve trim enables an effective impingement process that efficiently dissipates energy and reduces velocity using the latest in fluid-management dynamics.
  • Plug and cage.
  • Multi-stage stacked disc.
  • Intermitter trim.
  • Dual stage low flow.
  • Needle and seat.
  • Bean and caged bean.

What is choke manifold in oil field?

In oil and gas production a choke manifold is used to lower the pressure from the well head. It consist of a set of high pressure valves and at least two chokes. These chokes can be fixed or adjustable or a mix of both.

What is choke and types?

It has no bearing on shot speed (velocity) or distance (range). That is, the choke does not alter the shotgun’s power—it just controls how tight or spread out the pellets will be at a specific distance. Cylinder choke is an unconstricted barrel. The shot string spreads quickly. Cylinder Choke.

What is choke and its types?

Chokes are divided into two broad classes: Audio frequency chokes (AFC) – designed to block audio and power line frequencies while allowing DC to pass. Radio frequency chokes (RFC) – designed to block radio frequencies while allowing audio and DC to pass.

Where is the choke valve located?

Choke valves are generally used in naturally aspirated engines to supply a richer fuel mixture when starting the engine. Most choke valves in engines are butterfly valves mounted upstream of the carburetor jet to produce a higher partial vacuum, which increases the fuel draw.

What is positive choke valve?

Positive Choke Valves provide a fixed flow rate through the use of a choke bean. The flow rate is controlled by the choke bean orifice size selected.

What is a wellhead in oil and gas?

A wellhead is an equipment installed at the surface of a completed oil or a gas well that provides a structural and pressure containing interface for the drilling and production equipment.

What is ideal choke coil?

high resistance and low inductance 8%

What is difference between choke and inductor?

Main Differences Between Inductors and Chokes Inductors can generate magnetic fields and can also store energy within magnetic fields. A choke’s primary purpose is to remove AC current and pass DC current. Radiofrequency (RF) chokes rely on increasingly larger inductor sizes to block low-frequency signals.