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Start and stop type underground control device realizing ignition, detection and well killing and control method thereof

A control device, open-close technology, applied in wellbore/well valve device, wellbore/well components, measurement, etc., can solve the problems of low cost of use, cables cannot be used in every well, etc., to reduce oil production Cost, reliable performance, simple operation effect

Active Publication Date: 2014-10-22
徐瑞祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that the cables in the compression "air" oil production process cannot be used in every well, and provide a kind of electric cable and detection equipment that can be lifted and unloaded under high pressure, and can be used for many times. Reliable operation, good sealing performance, high temperature and high pressure resistance, and low cost of use. Open-close downhole control device and control method for ignition, detection, and well killing

Method used

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  • Start and stop type underground control device realizing ignition, detection and well killing and control method thereof
  • Start and stop type underground control device realizing ignition, detection and well killing and control method thereof
  • Start and stop type underground control device realizing ignition, detection and well killing and control method thereof

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Effect test

Embodiment 1

[0033] Such as Figure 1-Figure 8 As shown, the opening and closing type downhole control device for realizing ignition, detection and well killing related to the present invention includes an upper joint 16 and a lower joint 1, and an eccentric casing 2 is threaded on the upper opening of the lower joint 1, and the inner wall of the eccentric casing 2 A groove 201 is provided corresponding to the eccentric part, a valve assembly is provided through the support tube 3 in the eccentric sleeve 2 , and a lifting switch assembly is provided between the eccentric sleeve 2 and the upper joint 16 . The valve assembly includes a valve frame 7 and a valve seat 8 placed in the eccentric sleeve 2 from bottom to top. The cylinder 3, the valve frame 7, and the valve seat 8 are pressed tightly, and the valve frame 7 is hinged with the valve cover 6 through the pin shaft 5, and the side passage hole is provided on the support tube 3 corresponding to the valve cover 6 turned up position 301,...

Embodiment 2

[0043] Such as Figure 9 As shown, the valve cover 6 is provided with a pressure relief valve 20 , and the valve stem 2001 of the pressure relief valve 20 protrudes from the upper surface of the valve cover 6 . Other structures are with embodiment 1. This structure is suitable for use without compressed air station or hydraulic station.

[0044] To realize the open-close downhole control method of ignition, detection and well killing, the specific steps are as follows:

[0045] 1. Connect the upper joint 16 with the oil pipe, and connect it to the wellhead at a distance of 50-100m, and connect the lower joint 1 with the oil pipe to the oil layer.

[0046] 2. When the electric igniter goes down until the lower cone surface hits the lifting pin 13, it is affected by the gravity of the electric pulley to push the lifting sleeve 9 together with the wing-shaped circlip 14 to leave the wing-shaped circlip static groove 1501 and drive to the wing-shaped circlip to work. The slot ...

Embodiment 3

[0048] Such as Figure 10 As shown, the sealing surface of the valve cover 6 is a spherical surface, and the sealing surface of the valve seat 8 is an inclined surface;

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Abstract

The invention provides a start and stop type underground control device and method, wherein the start and stop type underground control device can lift and drop a cable and detect equipment under high pressure, lifts and drops the cable smoothly, can be used repeatedly, is reliable in operation, good in sealing performance and low in usage cost, and realizes ignition, detection and well killing. According to the start and stop type underground control device, an eccentric sleeve is connected to an upper opening of a lower connector, a valve assembly is arranged inside the eccentric sleeve through a support barrel, and a lifting switch assembly is arranged between the eccentric sleeve and the upper connector; the lifting switch assembly comprises a main sleeve, a wing spring static groove, a wing spring working groove, a lifting switch static groove and a lifting switch working groove, wherein the wing spring static groove, the wing spring working groove, the lifting switch static groove and the lifting switch working groove are formed in the inner wall of the main sleeve; a lifting sleeve and a wing-shaped snap spring are arranged inside the main sleeve; limiting bayonet locks and a lifting bayonet lock are hinged to each axial strip-shaped groove inside the lifting sleeve.

Description

technical field [0001] The invention relates to an opening and closing downhole control device and control method used in oil fields and coal mines to realize ignition, detection and well killing. Background technique [0002] The traditional heavy oil recovery process injects steam into gas injection wells at high pressure through heat-insulated pipes. The oil well starts to produce oil after the heavy oil is diluted. This process has the problems of high cost such as gas production and heat preservation. [0003] Compressed "air" oil recovery technology has emerged in recent years. Compressed air is injected into the "gas well" and ignited by a pre-buried cable electric igniter. The oil is diluted, and the oil well starts to produce oil, and the cable of this well will be permanently placed in the well, and multiple wells cannot be ignited with one cable. Each gas injection well needs a cable of several kilometers and an electric igniter. The process is labor-saving c...

Claims

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Application Information

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IPC IPC(8): E21B17/02E21B34/06E21B47/00E21B43/243
Inventor 徐瑞祥赵小影修士金王江宽
Owner 徐瑞祥