Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly

A sliding sleeve switching and closing tool technology, applied in wellbore/well components, wellbore/well valve device, earthwork drilling and other directions, can solve the problem of high tool precision requirements, achieve simple overall structure, reliable action, The effect of easy assembly

Pending Publication Date: 2022-02-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a hydraulic closing tool for closing the sliding sleeve switch, so as to solve the problems caused by the integration of annular protrusions, grooves and compression heads on the shrapnel on the intelligent sliding sleeve closing tool in the prior art. The technical problem of high tool precision requirements; at the same time, the purpose of the present invention is also to provide a sliding sleeve switch tool assembly using the above-mentioned hydraulic closing tool

Method used

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  • Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly
  • Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly
  • Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly

Examples

Experimental program
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Effect test

Embodiment 1

[0086] Such as Figure 1 to Figure 7 As shown, the slide switch tool assembly in this embodiment as a whole includes a paired slide switch 100 and a hydraulic closing tool 200, the relationship between the slide switch 100 and the paired hydraulic closing tool 200 is similar to that of a key and a lock , one key corresponds to one lock, and for a downhole pipe string with multiple sliding sleeve switches 100, the hydraulic closing tool 200 that is lowered into the inside of the downhole pipe string can only be matched with the corresponding sliding sleeve switch 100. Close only the selected slide switch.

[0087] Such as figure 2 As shown, the sliding sleeve switch 100 is used for serial connection on the downhole pipe string, and is composed of an outer sleeve 101, an inner sliding sleeve 102, a locking ring 103 and a lower joint 104. The outer sleeve 101 is connected with the downhole pipe string through threads, and the outer sleeve 101 is provided The communication flow...

Embodiment 2

[0121] The main difference between it and Embodiment 1 is that in Embodiment 1, the force of the compression spring is directly overcome by pressing, and the lifting padlock tongue is driven by the fluid pressure to extend outward, so as to realize the engagement with the lifting padlock groove on the inner sliding sleeve. In this embodiment, the lifting lock tongue is telescopically assembled on the power piston in the radial direction, and the power piston is provided with an elastic member for driving the lifting lock tongue to protrude. The lower pressure ring, corresponding to the two pressure rings, is provided with top pressure springs respectively. The two top pressure springs are set on the power piston and apply elastic force to the two pressure rings to force the two pressure rings to move towards each other. , the pressing spring here is equivalent to the retractable elastic member, but the elastic force it exerts can only indirectly drive the lifting padlock tongue...

Embodiment 3

[0125] The main difference between it and Embodiment 1 lies in that in Embodiment 1, the lifting lock tongue is driven to protrude by pressing, and the sliding sleeve switch is closed by driving the power piston upward by continuing to press. In this embodiment, the power piston is canceled, and after the lifting lock tongue is pushed out by pressing, the coiled tubing and the hydraulic closing tool are directly lifted up to drive the inner sliding sleeve upward to close the sliding sleeve switch.

[0126] Of course, it can also be applied to the situation where it is necessary to drive the inner sliding sleeve down to close the sliding sleeve switch. When the positioning boss matches the annular positioning groove in the corresponding sliding sleeve switch, the wellhead is pressed, and the lifting lock tongue is extended. To engage with the corresponding lifting padlock slot, while maintaining the pressing state, continue to lower the coiled tubing and hydraulic closing tool, ...

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Abstract

The invention relates to a hydraulic closing tool used for closing a sliding sleeve switch and a sliding sleeve switch tool assembly, the hydraulic closing tool comprises a tool body, a pressing center hole, a lifting and hanging lock tongue and an inwards-shrinking elastic piece, and further comprises a positioning boss and an outwards-extending elastic piece, the positioning boss has the set up-down width size, the upper and lower groove width of the annular positioning groove in the multiple sliding sleeve switches is gradually increased from top to bottom corresponding to an underground pipe column with the multiple sliding sleeve switches, and in the process that the tool main body drives the positioning boss to move downwards, and when the positioning boss extends outwards to be matched with the annular positioning groove in the corresponding sliding sleeve switch in a positioning and inserting mode, the hydraulic closing tool is lowered in place. The positioning boss is controlled by the outward-extending elastic piece to act, the lifting and hanging lock tongue is controlled by fluid pressure and the inward-retracting elastic piece, the lifting and hanging lock tongue and the inward-retracting elastic piece do not interfere with each other, manufacturing cost can be effectively reduced, and reliable action is guaranteed.

Description

technical field [0001] The invention belongs to the field of downhole operation tools in oil and gas fields, and in particular relates to a hydraulic closing tool for closing a sliding sleeve switch and a sliding sleeve switch tool assembly. Background technique [0002] At present, horizontal wells mainly use the completion string combined with a sliding sleeve switch and a packer for staged production. The packer isolates the production layer, and oil and gas flow into the wellbore through the oil and gas flow channels provided on the sliding sleeve switch. [0003] The sliding sleeve switch that can be switched repeatedly is mainly composed of an outer sleeve, an inner sliding sleeve, a lower joint and a lock ring that locks the outer sleeve and the inner sliding sleeve. Driven by the drive, it moves relative to the casing, thereby opening or closing the oil flow channel on the casing. [0004] In fact, there are many sliding sleeve structures in the prior art, basically...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/14E21B23/10
CPCE21B34/14E21B23/10
Inventor 赵效锋曹海燕谭肖王选奎张文昌张志平张余贵王振华
Owner CHINA PETROLEUM & CHEM CORP
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