Cava-free automatic liquid drainage throttle device

An automatic drainage and choke technology, which is applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc. The effect of easy unpacking process

Active Publication Date: 2016-10-12
SHAANXI HUIFENGYUE PETROLEUM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of natural gas exploitation, chokes are generally used in the production of natural gas oil pipelines to throttle and depressurize the high-pressure natural gas produced in the formation. The commonly used chokes are mainly slip-supported structures. It meets the needs of downhole throttling, but it is difficult to unsealing after a certain period of use, and it is not easy to salvage. According to the problems in the field application of this structure

Method used

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  • Cava-free automatic liquid drainage throttle device

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Embodiment Construction

[0015] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention.

[0016] The present invention will be described in detail below in conjunction with accompanying drawing, as figure 1 As shown: the non-slip automatic liquid discharge restrictor of this embodiment includes: a central pipe 1, one end of the central pipe 1 is provided with a salvage neck 2, and the upper edge of ...

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Abstract

The invention discloses a cava-free automatic liquid drainage throttle device. The cava-free automatic liquid drainage throttle device comprises a central pipe, one end of the central pipe is sleeved with a fishing neck, and the central pipe is sequentially sleeved with a pressing nut, an upper gland, an elastic sleeve, a lower gland, an expansion force head and a locking piece claw in the direction far away from the fishing neck; the pressing nut is in threaded connection with the central pipe and abuts against the upper gland, the elastic sleeve is clamped between the upper gland and the lower gland, one end of the expansion force head abuts against the other end of the lower gland and is in threaded connection with the central pipe, the locking piece claw is arranged on the expansion force head in a sleeving mode, a cavity is formed between the expansion force head and the central pipe, a limit block is formed on the inner wall of the expansion force head, and an air tap is arranged in the fishing neck. The cava-free automatic liquid drainage throttle device can enable the deblocking process to be easier, avoids the condition that liquid drainage is conducted by enabling a steel wire to trip in a special tool and is convenient to use.

Description

technical field [0001] The invention relates to the technical field of throttling devices, in particular to a non-slip automatic liquid draining throttling device. Background technique [0002] At present, in the field of natural gas exploitation, chokes are generally used in the production of natural gas oil pipelines to throttle and depressurize the high-pressure natural gas produced in the formation. The commonly used chokes are mainly slip-supported structures. It meets the needs of downhole throttling, but it is difficult to unsealing after a certain period of use, and it is not easy to salvage. According to the problems in the field application of this structure. Contents of the invention [0003] In view of this, the present invention provides a slip-free automatic draining restrictor, which makes the unsealing process easier, avoids the use of steel wires to run professional tools for draining, and is convenient to use. [0004] The present invention solves the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12
CPCE21B43/12
Inventor 杭建春胡晓辉
Owner SHAANXI HUIFENGYUE PETROLEUM TECH DEV CO LTD
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