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Device of a test plug

A device and plug technology, which is applied in the field of test plug devices, can solve problems such as residue/particle blockage, defects, technical complexity, etc.

Active Publication Date: 2012-05-09
TCO AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Valves and other systems that perform the same function as a crushable plug, for example with a flap or cock that can be opened, are currently on the market, but these valves and other systems have a significant disadvantage: they are technically Complex, with many moving parts, with many potentials for defects
They are easily clogged by debris / particles entering the mechanism
Therefore, these valves are expensive and in most cases are omitted or left out

Method used

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Examples

Experimental program
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Embodiment Construction

[0032] First refer to figure 1 , the figure represents the conduit of a production tubing 10 of a type known in the past, in which a plug 12 is installed. The plug 12 is placed in a portion 14 of the tube 10 enlarged in radial direction. Portion 14 has a slightly larger inner diameter than the rest of the tube, both to provide positive positioning of the plug and to avoid restriction of the flow cross-sectional area when the plug is removed. The plug 12 is primarily cylindrical (although other cross-sectional forms may be suitable for the cross-section of the tube 10).

[0033] The underside of the plug 12 forms, at the bottom of the enlarged portion, a circular, inclined, shoulder-shaped seat 18 with respect to the longitudinal axis X of the tube 10 . The upper part of the plug also has a sloped surface. In this way, the plug is more resistant to high pressure and pressure pulses. The contact angle of the plug 10 with respect to the seat is about 45°.

[0034] The enlarg...

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PUM

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Abstract

A device is described for a plug (12) for pressure testing of bore holes and the like in a formation or the like, and associated pipe (10) in which the plug is installed in a plug-carrying chamber (14), and the plug (12) seals the passage through the pipe by cooperating with sealing bodies (23, 25), with the underside of the plug (12) being arranged (rests) in a seat at the bottom of the chamber.The plug is characterised in that it comprises a number of layer-formed or tier-formed ring disc elements of a given thickness, on fitted on top of the other.

Description

technical field [0001] The invention relates to a test plug device as described in the preambles of the following claims. Such plugs are now used in applications such as oil, gas and water wells. [0002] The invention also relates to different embodiments of the device for a tube structure suitable for receiving such a glass plug. Background technique [0003] Plugs utilizing shatterable or crushable materials such as ceramic materials or glass are known. It is also known to use composite plugs which can only withstand pressure in one direction. For example, these plugs are known for use in the US. [0004] It is well known that production wells in the petroleum industry must be tested before being used. One of these tests involves checking that components of the well are able to withstand the pressures under conditions of operation during oil / gas production. To perform this test, a plug is inserted, closing the passage down into the well. With the help of an appropri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12E21B33/134
CPCE21B33/1208E21B33/12E21B33/134
Inventor T·H·瑟伦森
Owner TCO AS