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Underground fishing tool based on wireless control and its application method

A salvage tool and wireless control technology, which is applied to earth-moving drilling, wellbore/well components, etc., can solve the problems of low salvage efficiency and difficulty in salvage, so as to improve the salvage efficiency, improve the salvage success rate, and ensure the salvage effect. Effect

Active Publication Date: 2019-06-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high difficulty in fishing and low fishing efficiency of rope tools in the prior art, the embodiment of the present invention provides an underground fishing tool based on wireless control and its use method

Method used

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  • Underground fishing tool based on wireless control and its application method
  • Underground fishing tool based on wireless control and its application method
  • Underground fishing tool based on wireless control and its application method

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0048] The first aspect of the present invention provides an underground fishing tool based on wireless control. The fishing tool includes a radio control device and a fishing pipe string. device; the connection and fixing device 4 is used to connect the rope to lower or lift the fishing tool; the anchoring device includes an anchoring drive assembly 9 and an anchoring component connected in sequence, and the anchoring drive assembly 9 adopts radio control for controlling the anchoring The components are circumferentially fixedly connected with the fixing device 4 and the anchoring device; the fishing device includes a sequentially connected fishing drive assembly 14 and a fishing spear 15, and the fishing driving assembly 14 adopts rad...

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Abstract

The invention discloses a down-hole salvage tool based on wireless control and a using method and relates to the technical field of oilfield workover operation. The salvage tool comprises a radio control device and a salvage pipe string. The salvage pipe string comprises a connecting fixing device, an anchorage device and a salvage device which are sequentially connected in the axial direction. The upper end of the connecting fixing device can be connected with a rope to lower or lift the salvage tool; the anchorage device comprises an anchorage driving assembly and an anchorage assembly which are sequentially connected; the anchorage driving assembly adopts radio control to control the anchorage assembly to circumferentially fix the connecting fixing device and the anchorage device; and the salvage device comprises a salvage driving assembly and a salvage spear which are sequentially connected, and the salvage driving assembly adopts radio control to control circumferential rotating of the salvage spear. The salvage spear is driven by the salvage driving assembly to conduct rotary salvage, the salvage pipe string is anchored through the anchorage device, the tool stability is enhanced, the salvage success rate is increased, a wireless remote control method is adopted, and therefore the labor operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of oilfield workover, in particular to a wireless control-based downhole fishing tool and a usage method. Background technique [0002] In the process of oil exploration and development, there are various kinds of fish falling in the wellbore, including pipes, rods, logging instruments, ropes, and small pieces of falling objects. Special tool strings are used for salvage operations. Especially for ropes such as steel wires and cables, because of their slender and elastic structure, clumping is easy to occur if they are not fished in time, and then block the wellbore, seriously affecting oil well operations. Therefore, it is very necessary to provide a fishing tool for rope-like fish. [0003] In the prior art, for ropes such as steel wires and cables, the operation mode of repeatedly fishing with inner and outer spears is usually adopted. Specifically, the fishing tool in the prior art has an overshot fis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/18
CPCE21B31/18
Inventor 付玉坤马辉运喻成刚杨云山刘辉邓千里李奎江源
Owner PETROCHINA CO LTD
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