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Test Gate Antifreeze

A technology of anti-freezing device and gate, which is applied in the direction of wellbore/well valve device, wellbore/well parts, sealing/package, etc., which can solve the problems of stagnant water area and freezing, and achieve the effect of simple structure

Active Publication Date: 2018-02-23
山东科德电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of stagnant dead water in existing test gates, resulting in freezing

Method used

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  • Test Gate Antifreeze

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawing:

[0010] Depend on figure 1 As shown, the test gate antifreeze device includes a draft tube 1 and a test gate short circuit 2 . The diversion tube 1 is tubular, with a sealing seat at the lower end, and a sealing ring is filled in the outer groove of the sealing seat. There is an annular boss 3 outside the upper part of the diversion tube 1. There is a diversion groove on the boss 3 in the axial direction. The sealing seat of 1 is placed in the lower part of the small cross 4 at the wellhead and sealed. The test gate short 2 is tubular, with external threads on the upper end, external threads on the lower end, and internal threads on the upper part. The test gate short 2 is connected to the boss 3 of the draft tube 1 through internal threads, and the test gate short 2. The lower end is connected to the clamp short on the small cross 4 at the wellhead through threads, and th...

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Abstract

The invention relates to a test sluice gate anti-freezing device, which mainly solves the problem of freezing due to existence of a nonflowing dead water region of the existing test sluice gate. The test sluice gate anti-freezing device is characterized in that a flow guide pipe (1) is in a pipe shape; the lower end of the flow guide pipe (1) is provided with a sealing seat; a sealing seat outer groove is filled with a sealing ring; an annular lug boss (3) is arranged outside the upper part of the flow guide pipe (1); a flow guide groove is formed in the lug boss (3) in the axial direction; the sealing seat of the flow guide pipe (1) is arranged in the lower part of a wellhead small four-way valve (4) and is sealed; a test sluice gate short connector (2) is connected onto the outside of the lug boss (3) of the flow guide pipe (1) through internal screw threads; the lower end of the test sluice gate short connector (2) is connected onto a coupling short connector arranged on the wellhead small four-way valve (4) through screw threads; the upper end of the test sluice gate short connector (2) is connected with the lower end of a test sluice gate (5) through screw threads; and a flow guide annular space is formed between the flow guide pipe (1) and the test sluice gate short connector (2). The test sluice gate anti-freezing device has the characteristics that no dead water region exists; and freezing cannot occur.

Description

Technical field: [0001] The invention relates to a test gate used for oil production in an oil field, in particular to an antifreeze device for the test gate. Background technique: [0002] In the field of oil recovery, layered fine water injection is generally used in order to enhance the recovery factor. A test gate is installed on the Christmas tree of the layered water injection well. The test gate is an important tool to ensure the safety of the high pressure test of stratified water injection wells. However, the existing test gates have defects due to structural reasons: in oil fields located in alpine regions, the outdoor temperature is low in winter, and there are insufficient A dead zone of flow that causes the injected water in this zone to freeze. The frozen test gate will have two unfavorable factors for the work: one is that the frozen test gate needs to be baked with a blowtorch or electric heating and other means to thaw the test gate. Increased employee f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/02
CPCE21B34/02
Inventor 张化庆张仁生冯国川李东胜郭英健李伟权乔艳红于守清戴海辉李霞向阳姜树生张会荣杨连彬姜丽丽王爽李春明
Owner 山东科德电子有限公司
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