Oil pipe hanger capable of closing and opening oil pipe passageway

A technology of tubing hanger and check valve, which is applied in wellbore/well valve device, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of high downhole pressure, high risk and high construction risk, etc. To achieve the effect of easy operation and reliable sealing

Inactive Publication Date: 2015-05-13
SICHUAN HUAYU PETROLEUM DRILLING & PRODION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of downhole chokes for plugging has the following problems: the plugging function of downhole chokes must be opened by inserting tools from the wellhead. In this operation, due to the high downhole pressure, the construction risk is high and it takes a long time
[0004] The use of tubing plugs for plugging has the following problems: the operation of running the tubing plugs into and setting them in the downhole tubing has high risks and the process is relatively complicated

Method used

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  • Oil pipe hanger capable of closing and opening oil pipe passageway
  • Oil pipe hanger capable of closing and opening oil pipe passageway
  • Oil pipe hanger capable of closing and opening oil pipe passageway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like figure 2 As shown, further, the power system 3 is a hydraulic power system, which includes a plug 301, an oil injection hole 302, a piston 303, and a piston rod 304, wherein the head end of the piston rod 304 is connected to the piston 303, and the tail end of the piston rod 304 is connected to the transmission Connect the device 9, remove the plug 301, pressurize the oil injection hole 302, push the piston 303 to move forward, drive the transmission device 9, and make the valve body 202 rotate with the rotating shaft 201 as the axis, and the oil pipe hanger 1 channel To block.

[0021] Further, the transmission device includes a gear 902 and a rack 901, the gear 902 is fixed on the central shaft 201 of the check valve, the rack 901 fits with the gear 902, the rack 901 is connected to the tail end of the piston rod 304, and the plug 301 is removed , by injecting oil into the oil hole 302 to pressurize the piston 303 to move forward, the rack 901 drives the gear 9...

Embodiment 2

[0023] The tubing hanger of the invention makes plugging the tubing reliable, simple and easy to operate. The present invention is described in further detail above in conjunction with the test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the above embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

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PUM

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Abstract

The invention belongs to the field of oil and gas production instrument manufacturing. An oil pipe hanger comprises a check valve arranged in the oil pipe hanger, a power system, a transmission device and an elastic reset device, wherein the check valve is arranged in a groove in the inner wall of the oil pipe hanger, a rotating shaft of the check valve is connected with the power system depending on the transmission device, and depending on the oil pipe hanger, an oil pipe can be reliably, easily and conveniently blocked.

Description

technical field [0001] The invention relates to a tubing hanger for production, especially a tubing hanger with self-sealing function. Background technique [0002] At present, the necessary measures to replace the Christmas tree or the valves on it are: before the replacement, use a downhole choke or a tubing plug to block the tubing in the tubing. [0003] The use of downhole chokes for plugging has the following problems: the plugging function of downhole chokes must be opened by inserting tools from the wellhead. In this operation, due to the high downhole pressure, the construction risk is high and it takes a long time . [0004] The use of tubing plugs for plugging has the following problems: the operation of running the tubing plugs into and setting them in the downhole tubing has high risks, and the process is relatively complicated. Contents of the invention [0005] The invention provides a brand new tubing hanger, which makes the plugging of the tubing relia...

Claims

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Application Information

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IPC IPC(8): E21B34/02
CPCE21B33/04E21B34/02
Inventor 冯小红梅宗清梅宗斌杨文武敖昌林毛键
Owner SICHUAN HUAYU PETROLEUM DRILLING & PRODION EQUIP
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