What does a subsea Christmas tree do?

Subsea tree (wet trees) is a system of valves, flow paths, piping, and connectors installed on a subsea wellhead to contain and control the flow of fluid from a reservoir or from the surface by injection.

How much does a subsea tree cost?

The buying cost or price varies according to spec and market conditions and is typically at US$1-3Million. A control pod mounted on a subsea tree assembly provides a receptacle for an umbilical and contains the electronic and hydraulic components that control tree functions.

How do you secure a 10ft Christmas tree outside?

To use this method simply fill plastic store bags with rocks, pebbles, or sand, and tie them on to your tree stand. You want to use at least two, and place them opposite each other, so that the weight is evenly distributed.

What do you need to know about a subsea Xmas tree?

A subsea Xmas tree is basically a stack of vertical and horizontal valves installed on a subsea wellhead. It is installed provide a controllable interface between the well and production facilities.

How big does a subsea tree need to be?

With our commitment to meeting client challenges, our extensive and reliable subsea tree capabilities offer a wide range of vertical and horizontal subsea tree solutions for pressures up to 15,000 psi, temperatures to 400 o F and water depths up to 10,000 feet.

Which is the industry standard horizontal subsea tree system?

Since the development of the SpoolTree* horizontal subsea tree system in 1994, OneSubsea has installed more than 1,000 systems around the world, making the horizontal design an industry standard. Horizontal subsea tree systems offer the lowest initial capex and provide a universal design for operational efficiency in multiple fields.

Do you need a riser system for a subsea tree?

A dedicated riser system is not needed; the tree can be run on drill pipe. Intervention access is possible with a mono-bore riser system, available as a rental package when required. The riser system allows circulation with fluid returns through a large bore hose in the control umbilical (Fig. 13.11 ). Figure 13.11.