The tubing head adapter provides a transition between the tubing head and the Christmas tree. The bottom adapter connection matches the tubing head, and the top adapter connection matches the tree. Tubing head adapters are available for all types of single and multi-string completions, including those using electric submersible pumps, packers, down hole control valves and gas lift valves. These adapters come with threaded, flanged or studded-flange top connections. Most tubing head adapters are available with hydraulic supply inlets for down hole control lines. If the customer requires, DELTA also supplies various types of adapters that will accommodate continuous control-line capabilities. Following you will find the most commonly used types.
Normal Adapter Flange
Simple transition piece between the tubing head and the tree, used with a TC -1A tubing hanger. Available with threaded, flanged, or studded top connection.
Adapter with Control-lines
Similarly to the Normal Adapter Flange but with the addition of control line preparation to allow convenient passing through chemicals into the wellbore through the wellhead assembly
3A- Single Piece Adapter
ESP adapters have seal bores to accommodate both a tubing hanger neck seal and an electrical power feed-thru device. Standard ESP adapters are made from single piece body. Positive alignment can be obtained through the use of optional features in the mating ESP hanger and spool. ESP adapters can be supplied to match standard tubing heads rated with working pressure up to 10,000 psi.
3B- 2 Pieces Adapter
Rotating EFT adapters are equipped with rotating flanges to mate to the tubing head, minimizing concerns over alignment issues. EFT adapters can be supplied to match standard tubing heads rated to 2,000 and 10,000 psi working pressure.
Control line preparation is optional and is available upon customer’s request for both EFT types adapter flanges.