What is the difference between a Christmas tree control and wellhead?

Many times, the words Christmas Tree and Wellhead are used interchangeably; however, a wellhead and Christmas tree are entirely separate paces of equipment. A wellhead must be present in order to utilize a Christmas tree and is used without a Christmas tree during drilling operations.

What is wellhead Christmas tree?

In petroleum and natural gas extraction, a Christmas tree, or “tree”, is an assembly of a multi-valved structure consisting of valves, spools, and fittings used to control the flow of oil from the well. The shape of the wellhead structure with valves looks like a pine tree so the wellhead is called as “Christmas tree”.

What is master valve in Christmas tree?

A master valve is located above the tubing hanger and its function is to allow the well to flow or shut the well in. Typically, there are two master valves. One is called a lower master valve and another is an upper master valve. Two valves are often used because they provide redundancy.

What do the valves on a Christmas tree do?

…valves, referred to as a Christmas tree, is installed at the top of the well. The valves regulate flow from the well and allow tools for subsurface work to be lowered through the tubing on a wire line.

What is a Christmas tree oil and gas?

In the oil & gas industry, a Christmas tree is a piece of heavy equipment that controls the flow produced by a well. It is a separate piece of hardware that connects to the wellhead after the drilling has ceased and the well begins pumping oil or gas.

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 the purpose of a Christmas tree oil and gas?

A Christmas tree is a piece of equipment that provides flow control on a oil or gas well. Christmas trees are a vertical assembly of valves with gauges and chokes that allow for adjustments in flow control as well as injections to stimulate production.

What is well intervention in oil and gas?

A well intervention, or well work, is any operation carried out on an oil or gas well during, or at the end of, its productive life that alters the state of the well or well geometry, provides well diagnostics, or manages the production of the well.

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.

What is SSV valve?

The Well Test Surface Safety Valve (SSV) is a hydraulically or pneumatically actuated, fail-safe gate valve installed upstream of the choke manifold. The SSV includes an emergency shutdown (ESD) function.

What does a Christmas tree do oil and gas?

What is a tree in oil and gas?

In petroleum and natural gas extraction, a Christmas tree, or “tree”, is an assembly of valves, casing spools, and fittings used to regulate the flow of pipes in an oil well, gas well, water injection well, water disposal well, gas injection well, condensate well and other types of wells.

What is a Christmas tree in oil and gas extraction?

In petroleum and natural gas extraction, a Christmas tree, or “tree”, is an assembly of a multi-valved structure consisting of valves, spools, and fittings used to control the flow of oil from the well. The shape of the wellhead structure with valves looks like a pine tree so the wellhead is called as “Christmas tree”.

What is a Christmas tree in hydrocarbon production?

The Christmas tree is the heart of the offshore hydrocarbon production system. It is the primary means of the well control and plays a key role in the emergency shut down system. The Christmas tree sits on the top of the wellhead casing system and represents the interface between the well and the production and process facility.

How are Christmas trees used in offshore drilling?

Christmas trees used in offshore drilling and extraction are called subsea trees. Subsea trees can be vertical or horizontal based on how the master valves – the valves set on the flow path and capable of closing off production – are designed.

What is the difference between a wellhead and a Christmas tree?

In the complicated but vital industry of drawing oil and gas out of the earth and getting it to the surface, people often get confused about the difference between a Christmas tree assembly and a wellhead. Although the terms are used interchangeably, a wellhead and Christmas tree are entirely separate pieces of equipment.