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Tubing Hanger and Methods for Testing and Sealing the Tubing Hanger

a technology of tubing hangers and tubes, which is applied in the direction of fluid removal, borehole/well accessories, construction, etc., can solve the problems of frac valves typically increasing costs, and high cost of mudkilling wells

Inactive Publication Date: 2012-08-16
PETROHAWK PROPERTIES LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drawbacks to conventional sealing systems include the use of mud to kill the well, with the sealing system then typically being used.
Killing the well with mud may be expensive and may also be dangerous to the wellbore.
Further drawbacks include adding a frac valve to the top of the tubing hanger, with frac valves typically increasing costs.
Additional drawbacks include inefficiencies in testing the sealing system.
Drawbacks to conventional testing methods include inefficiencies and the expense involved in testing the tubing hanger.

Method used

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  • Tubing Hanger and Methods for Testing and Sealing the Tubing Hanger
  • Tubing Hanger and Methods for Testing and Sealing the Tubing Hanger
  • Tubing Hanger and Methods for Testing and Sealing the Tubing Hanger

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Embodiment Construction

[0009]These and other needs in the art are addressed in one embodiment by a tubing hanger assembly. The tubing hanger assembly includes a tubing hanger body having a mandrel receiving body section, a seal receptacle body section, a tubing receiving body section disposed on the opposing end of the tubing hanger body from the mandrel receiving body section, and wherein the seal receptacle body section is disposed between the mandrel receiving body section and the tubing receiving body section. The tubing hanger assembly also includes an interior bore extending longitudinally through the tubing hanger body. The interior bore includes a mandrel bore disposed within the mandrel receiving body section, a seal receptacle bore disposed within the seal receptacle body section, a valve preparation bore disposed within the tubing receiving body section, a tubing bore disposed within the tubing receiving body section, and wherein the valve preparation bore is disposed between the tubing bore an...

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PUM

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Abstract

A tubing hanger assembly and method provide a tested and sealed tubing hanger. In one embodiment, a method for testing and sealing a tubing hanger includes attaching a test mandrel to the tubing hanger. The tubing hanger has an interior bore and a test port. The method also includes providing a test seal in the interior bore. The test seal is above the test port. In addition, the method includes adding pressure to the interior bore through the test port. The method further includes monitoring the pressure. Moreover, the method includes removing the test mandrel from the tubing hanger and attaching a production mandrel to the tubing hanger. Additionally, the method includes providing a seal in the interior bore. The seal has an upper seal and a lower seal. The upper seal is above the test port, and the lower seal is below the test port.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]Not applicable.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.BACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]This invention relates to the field of wellbore equipment and more specifically to the field of tubing hangers.[0005]2. Background of the Invention[0006]Tubing hangers are conventionally located in the tubing head and attached to the topmost tubing joint in the wellhead. Typically, the tubing hanger supports the tubing string weight. The tubing hanger also seals the annulus from the upper wellhead and Christmas tree.[0007]Tubing hangers have sealing systems and methods for testing seals. Such sealing systems include a variety of seals. Drawbacks to conventional sealing systems include the use of mud to kill the well, with the sealing system then typically being used. Killing the well with mud may be expensive and may also be dangerous to the wellbore. Further drawbacks include a...

Claims

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Application Information

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IPC IPC(8): E21B23/00E21B23/02
CPCE21B47/1025E21B33/04E21B47/117
Inventor KENNEDY, JIMMY L.
Owner PETROHAWK PROPERTIES LP