DE0420 : API 6A: X-mas Tree & Wellhead Operations, Maintenance & Testing

This practical and highly-interactive course includes real-life case studies and exercises where participants will be engaged in a series of interactive small groups and class workshops.
Christmas trees are used on both sub-surface and subsea wells. It is common to identify the type of tree as either "subsea tree" or "sub-surface tree". Each of these classifications has a number of variations. The primary function of a tree is to control the flow, usually oil or gas, out of the well. A tree may also be used to control the injection of gas or water into a non-producing well in order to enhance production rates of oil from other wells.
When the well and facilities are ready to produce and receive oil or gas, tree valves are opened and the formation fluids are allowed to go through a flow line. This leads to a processing facility, storage depot and/or other pipeline eventually leading to a refinery or distribution center (for gas). Flow lines on subsea wells usually lead to a fixed or floating production platform or to a storage ship or barge, known as a floating storage offloading vessel (FSO), or floating processing unit (FPU), or floating production, storage and offloading vessel (FPSO).
This course is designed to provide participants with a detailed and up-to-date overview on the operations, maintenance and testing of x-mas tree and wellhead. It covers the various wellhead equipment, x-mas tree, tubing hanger, production packages and landing nipples; the barriers principles and well safety; the hydraulic barriers, mechanical barriers, subsurface control valves, packer setting and testing; flanging of the wellhead, casing head housing, tubing spool hanger, checks and tests; the valves and actuators, wellhead safety valves and control systems; and the operating procedures and working under safe conditions.