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Wax removal milling shoes for horizontal well screw drilling tools

A technology for screw drilling tools and horizontal wells, applied in the direction of drill pipes, drill pipes, drilling equipment, etc., which can solve problems such as difficult spin of the centralizer, easy wear of the metal wellbore, and easy jamming of the sucker rod, etc., to achieve improved stability Excellent durability, fatigue resistance and toughness, high acid and alkali resistance

Active Publication Date: 2022-04-26
YANCHENG HUAYA GASOLINEEUM MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the structure of the horizontal well is horizontal, when the wax deposition is serious, the sucker rod is easy to jam, the centralizer is difficult to spin, and the wax removal effect is poor; the wax removal of the milling shoe, due to the hard milling teeth embedded in the milling shoe, can remove wax at the same time. It is easy to eccentrically wear the metal shaft, causing accidents

Method used

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  • Wax removal milling shoes for horizontal well screw drilling tools
  • Wax removal milling shoes for horizontal well screw drilling tools
  • Wax removal milling shoes for horizontal well screw drilling tools

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The wear-resistant and wax-removing synthetic body 3 is pre-oxidized, carbonized, and high-temperature solidified with 12% high-strength and high-modulus polyacrylonitrile-based carbon fiber, 10% ablation viscose, and 16% phenolic resin according to the mass percentage. After phase treatment, carry out with 25% high molecular polyethylene, 11% polytetrafluoroethylene, 18% nylon, 4 titanate catalyst, 2% PE-CO-PA compatibilizer, 2% antioxidant Mixed and melted at high temperature, when the melting temperature reaches 160°, the mixed body is injected into the mold for one-time injection molding.

Embodiment 2

[0020] The wear-resistant and wax-removing synthetic body 3 is pre-oxidized, carbonized, and high-temperature solidified with 15% high-strength and high-modulus polyacrylonitrile-based carbon fiber, 8% ablation viscose, and 15% phenolic resin according to the mass percentage. After phase treatment with 22% high molecular polyethylene, 9% polytetrafluoroethylene, 19% nylon, 5% titanate catalyst, 4% PE-CO-PA compatibilizer, 3% antioxidant The mixture is mixed and smelted at high temperature, and when the smelting temperature reaches 200°C, the mixed body is injected into the mold for one-shot injection molding.

Embodiment 3

[0022] The wear-resistant and wax-removing synthetic body 3 is pre-oxidized, carbonized, and high-temperature solidified with 13% high-strength and high-modulus polyacrylonitrile-based carbon fiber, 9% ablation viscose, and 14% phenolic resin according to the mass percentage. After phase treatment with 20% high molecular polyethylene, 10% polytetrafluoroethylene, 23% nylon, 6% titanate catalyst, 3% PE-CO-PA compatibilizer, 2% antioxidant Carry out mixed high-temperature melting, and when the melting temperature reaches 220°, inject the mixed body into the mold for one-time molding and injection molding.

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Abstract

The invention discloses a special wax-removing milling shoe for screw drilling tools in horizontal wells, which is damage-resistant and easy to disassemble. Several wear-resistant wax-removing composite bodies are provided, and the structure of the wear-resistant wax-removing composite body includes: a socket and a bump arranged on the socket, and milling teeth and milling grooves are uniformly arranged on the upper end of the bump , the upper end of the bump is provided with a mounting hole, the lower end of the bump is provided with a slope, the alloy body is evenly provided with a number of bump installation grooves that cooperate with the bump, and the There are several socket mounting grooves cooperating with the sockets below the bump mounting grooves, and threaded mounting holes are arranged on the bottom of the upper end of the socket mounting grooves, and the bolts pass through the mounting holes and the threaded mounting holes to remove the wear-resistant wax. The composite body is fixed on the alloy body, and the milling teeth at the upper end of the bump expose the alloy body.

Description

technical field [0001] The invention relates to oil field exploitation equipment, in particular to a special wax-removing milling shoe for a horizontal well screw drilling tool. Background technique [0002] In the process of oil extraction, due to the different amounts of wax contained in crude oil, more than 90% of my country's oil fields contain more than 10% wax in crude oil, which is relatively high. Due to various factors such as extraction pressure, extraction temperature, and gas precipitation Wax in crude oil will accumulate and deposit, and wax deposition will occur on the wellbore, which will not only affect the quality and production of the oil well, but also cause blockage of the oil well, especially the wax deposition of the horizontal well. Due to the special structure of the horizontal well itself, the working conditions are also It is more complicated. If the wax deposition is not removed in time and effectively, the clogging of the wellbore will cause excessi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/02E21B17/10
CPCE21B37/02E21B17/10
Inventor 朱九翔王波高浩宏黄红梅王鹏陈强艾静静薛颜明郭杰上官文瑾朱连兰陈网芹
Owner YANCHENG HUAYA GASOLINEEUM MACHINERY MFG