Subsea tubing hanger integrated with built-in gate valve and driving structure
A tubing hanger and drive structure technology, applied in wellbore/well components, earthwork drilling, etc., can solve the problems of increasing operation time and labor intensity, meet the requirements of high reliability, reduce weight, and open and close quickly and easily Effect
Active Publication Date: 2021-06-15
BAOJI PETROLEUM MASCH CO LTD +2
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Problems solved by technology
The tubing hanger of the subsea vertical tree is placed in the wellhead head. Since the tubing hanger needs to seal the production and annulus channels when the tubing hanger is run in, the traditional annulus plug-type structure needs to install and recover the plugs sequentially, which increases the At the same time, because the vertical tree tubing hanger is generally placed on the innermost casing head, it is greatly affected by the cementing quality, and the tubing hanger requires a high degree of contact with the subsea tree. Matching precision, so height adjustment is required
Method used
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[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] The present invention integrates a built-in gate valve and an underwater tubing hanger with a driving structure, such as figure 1 with figure 2 As shown, the hanger body 6 is included, the hanger body 6 is provided with a cavity 17 at its central axis position, the top of the hanger body 6 is provided with an emergency recovery mechanism, the bottom end of the hanger body 6 is connected with an oil pipe 11, and the hanger body 6 The upper part of the outer wall is provided with a snap ring 5, the lower part of the outer wall of the hanger body 6 is provided with a height adjustment ring 7, and the outer wall of the cavity 17 of the hanger body 6 is provided with an electric through hole and a plurality of liquid through holes 18, and the electric through hole and a plurality of liquid through holes are arranged. The through-holes 18 ...
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The invention discloses an underwater tubing hanger integrated with a built-in gate valve and a driving structure, comprising a hanger body, a cavity is opened on the central axis of the hanger body, an emergency recovery mechanism is arranged at the top of the hanger body, and the hanger body The bottom of the body is connected with an oil pipe, and the outer wall of the hanger body is provided with a snap ring and a height adjustment ring. The hollow channel includes horizontal annular hole Ⅰ, horizontal annular hole Ⅱ, vertical annular hole Ⅰ and vertical annular hole Ⅱ, the vertical annular hole Ⅱ is connected with the annular space at the bottom of the hanger body, and the horizontal annular hole Ⅰ A gate valve is provided. The gate valve of the present invention is hydraulically controlled, quick and easy to open and close, and simultaneously meets height adjustment and emergency recovery functions, can better adapt to offshore oil and gas development conditions, and meets the high reliability requirements of underwater equipment.
Description
technical field [0001] The invention belongs to the technical field of offshore oil and gas drilling equipment, and relates to an underwater tubing hanger integrated with a built-in gate valve and a driving structure. Background technique [0002] The subsea tubing hanger is mainly used to hang the weight of the tubing, seal the wellhead or the diameter of the Christmas tree, provide channels for oil and gas production and annulus, and provide interfaces and channels for electronic control, hydraulic pressure and chemical agent injection. The tubing hanger of the subsea vertical tree is placed in the wellhead head. Since the tubing hanger needs to seal the production and annulus channels when the tubing hanger is run in, the traditional annulus plug-type structure needs to install and recover the plugs sequentially, which increases the At the same time, because the vertical tree tubing hanger is generally placed on the innermost casing head, it is greatly affected by the cem...
Claims
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IPC IPC(8): E21B23/01
Inventor 孙传轩樊春明刘启蒙刘兴铎刘永飞
Owner BAOJI PETROLEUM MASCH CO LTD