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Recyclable oil pipe bridge plug with high expansion ratio

An expansion ratio, tubing technology, applied in wellbore/well components, sealing/packaging, earth-moving drilling, etc., can solve the problems such as the inability to take out the bridge plug, the inability to guarantee the passability of the tool, and the inability to complete the operation. De-anchoring, enhanced slip resistance, reliable anchoring and de-anchoring effects

Pending Publication Date: 2019-01-15
弗润联科(北京)石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With such a length of bridge plug, in some harsh working environments, the passability of the tool cannot be guaranteed, so the job cannot be completed, or the bridge plug cannot be removed after the job

Method used

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  • Recyclable oil pipe bridge plug with high expansion ratio
  • Recyclable oil pipe bridge plug with high expansion ratio
  • Recyclable oil pipe bridge plug with high expansion ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A retrievable oil pipe bridge plug with a high expansion ratio, the retrievable oil pipe bridge plug tool with a high expansion ratio is mainly composed of a combined stack spring assembly 31, a heavy-duty hinged slip assembly 32 arranged in a circular array, a combined stack Spring assembly 33, a pair of articulated link type anti-shock mechanism assembly 34,35, lock assembly 36, sending into composition such as throwing away assembly 37 that the circular array of mirror image symmetry arranges.

[0041] The combined lap spring assembly 31 is mainly composed of a group of stack springs 1, movable pressure sleeves 2, and push rings 3 that are arranged oppositely or in combination. When the push ring 3 compresses the stack spring 1 in the axial direction, a reliable restoring elastic force can be obtained. The elastic force of the overlapping spring is much larger than that of the annular spring, which can provide reliable pre-tightening force for the slip assembly and th...

Embodiment 2

[0050] This embodiment serves as a further optimization of Embodiment 1. On the basis of it, when it is necessary to unpack and propose the present invention, a standard overshot is lowered, and the description of the standard overshot is omitted here. The canister grabs the lock ring 19 and lifts it up, and the central tube 4 moves downward under the double action of the restoring force of the combined lap spring assembly 31 and the rubber tube 16, thereby driving the combined lap spring assembly 31 and the circular array arrangement. Heavy-duty hinged slip assembly 32, combined stacked spring assembly 33, articulated link type anti-shock mechanism assembly arranged in a circular array 34, articulated link type anti-shock mechanism assembly arranged in a circular array 35, lock assembly Cheng 36 returns to the initial state. The tool of the present invention can be taken out from downhole.

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Abstract

The invention relates to technological devices for well completion, oil extraction and gas production of oil and gas fields, in particular to a recyclable oil pipe bridge plug tool with a high expansion ratio. The oil pipe bridge plug comprises a first combined laminated spring assembly, a heavy hinged slip assembly, a second combined laminated spring assembly, a first joint-type and link-type anti-outburst mechanism assembly, a second joint-type and link-type anti-outburst mechanism assembly, a lock assembly and a feed-in release assembly; a central pipe is arranged in the middle of the oil pipe bridge plug; the first combined laminated spring assembly, the heavy hinged slip assembly arranged in a circular array mode, the second combined laminated spring assembly, the first joint-type andlink-type anti-outburst mechanism assembly, the second joint-type and link-type anti-outburst mechanism assembly, the lock assembly and the feed-in release assembly are mounted on the central pipe ina sleeved mode. The recyclable oil pipe bridge plug has the advantages that a piston only needs a small stroke through a crank connecting rod mechanism, and the high expansion ratio can be achieved.

Description

technical field [0001] The invention relates to a technical device for well completion and oil and gas production in oil and gas fields, in particular to a recoverable oil pipe bridge plug tool with a high expansion ratio. Background technique [0002] Bridge plugs are used to isolate layers in oil and gas wells. The bridge plugs are usually made of elastic rubber to seal off liquid and pressure. fixed. Bridge plugs are widely used in the process of oil and gas development, mainly: temporary or permanent isolation of production layers, isolation of water layers, temporary bridge plugs for workover operations, squeeze injection operations, and temporary production when seeking production Packer, well abandonment operation, acidizing stimulation for layer selection, descaling operation for layer selection, finding water producing layer, layer selection test, leak detection of casing / tubing, permanent or temporary isolation of production layer, isolation Water layers, tempora...

Claims

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Application Information

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IPC IPC(8): E21B33/134E21B23/01
CPCE21B23/01E21B33/134
Inventor 董丹谢巍曾端
Owner 弗润联科(北京)石油科技有限公司
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