Rotary rock debris fishing tool with replaceable spray head for horizontal well

A technique for fishing tools and horizontal wells, which can be used in wellbore/well parts, earthwork drilling and mining, etc., and can solve problems such as poor results

Pending Publication Date: 2022-01-21
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of bottom hole cuttings salvage, small size cuttings can be discharged by high-pressure well flushing, but this method is less effective for large pieces of cuttings that have collapsed in the open hole completion well

Method used

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  • Rotary rock debris fishing tool with replaceable spray head for horizontal well
  • Rotary rock debris fishing tool with replaceable spray head for horizontal well
  • Rotary rock debris fishing tool with replaceable spray head for horizontal well

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Embodiment Construction

[0020] According to the accompanying drawings, the described rotary cuttings fishing tool with replaceable nozzles for horizontal wells mainly includes the fishing tool mainly includes a special joint, a casing 1, an annular battery, a vertical plate, a screw rotor, a casing 2, and a screw , ring motor, battery cover plate, tapered roller bearing, bearing end cover, salvage inner tube, nozzle, nozzle, O-ring (16), turbine, cuttings blocking umbrella, T-shaped bracket, PLC control module; There is a through hole in the special joint, and the lower end is connected to the casing 1; there is a vertical plate in the middle of the casing 1, and a ring-shaped battery cover and a ring-shaped motor are installed on both sides through bolts; the battery cover is in a T-shaped ring structure. Bolts are connected in the shell 1, and a ring battery is housed inside to provide power for the ring motor; the lower end of the ring battery is equipped with a PLC control module; the PLC control ...

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Abstract

The invention relates to a rotary rock debris fishing tool with a replaceable spray head for a horizontal well in the petroleum and natural gas industry. The rotary rock debris fishing tool comprises an annular battery, a screw rod rotor, a screw rod, an annular motor, a fishing inner cylinder, nozzles, the spray head, a turbine, a rock debris blocking umbrella, a PLC control module and the like. According to the rotary rock debris fishing tool, the rotary motion of the motor is converted into the linear motion of the fishing inner cylinder through screw rod transmission; the screw rod turbine in the fishing inner cylinder rotates through water power, and the spray head installed at the tail end of the inner cylinder can be freely replaced according to working conditions; the multiple nozzles arranged on the spray head can impact rock debris without dead angles; and the PLC control module controls the rock debris blocking umbrella to close a cylinder opening. The rotary rock debris fishing tool has the advantages that the spray head and the nozzles can be replaced according to the working conditions, the rock debris can be fished in an all-dimensional mode, operation can be conducted for multiple times, and the rock debris can be automatically prevented from falling off during recycling.

Description

technical field [0001] The invention relates to a fishing tool used in the oil and gas industry to fish cuttings in a horizontal well section. Background technique [0002] Petroleum is the blood of industry, and its importance is self-evident. In order to ensure the normal operation and production of the oil field, improve the recovery rate, and pursue better economic benefits, it is necessary to ensure that the oil and water wells can work normally and efficiently. [0003] However, the downhole technical conditions of oil and water wells are complex and diverse. At the same time, various failures and downhole accidents are prone to occur during the completion process, especially downhole falling objects or wellhead collapse lead to cuttings falling, causing the oil well to fail to work. In severe cases, the oil well may be scrapped , and then cause huge losses to the production and economic benefits of the oil field. [0004] Therefore, timely handling of downhole accid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B27/00
CPCE21B27/00
Inventor 黎伟刘忠杰牟磊刘志新王洪松付权谭先辉
Owner SOUTHWEST PETROLEUM UNIV
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