Thread grease for high torsional moment drill

A technology of thread grease and high torque, applied in the field of thread grease, can solve the problems of low friction coefficient and large consumption of drilling tools, etc., and achieve good brushing effect

Inactive Publication Date: 2003-04-02
GONGTOU SPECIAL APP DEV CHENGDU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the practical problems of low friction coefficient and large consumption of drilling tool thread grease at present, and provide users with a high-torque drilling too

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: High-torque drilling tool thread grease with friction coefficient of 0.12 under extreme pressure state: in this thread grease composition, 00 # The lithium compound grease content accounts for 48%, and the solid powder content accounts for 52%; among them, in 00 # The ingredients of lithium complex grease include:

[0014] 12-Hydroxystearic acid 3.62%

[0015] Sebacic acid 0.74%

[0016] Boric acid 0.44%

[0017] Lithium hydroxide 1.23%

[0018] N-100 (or minus 3B) 37.65%

[0019] Additive ingredients:

[0020] Oil-soluble barium petroleum sulfonate 2.40%

[0021] Benzotriazole 0.24%

[0022] Antimony dibutyldithiocarbamate 0.72%

[0023] Alkenylsuccinic acid 0.24%

[0024] Barium Dinonylnaphthalene Sulfonate 0.48%

[0025] Benzotriazole octadecylamine salt 0.24% contains in the solid powder ingredients:

[0026] α-Al 2 o 3 28%

[0027] Superfine Kaolin 12%

[0028] Chrome Oxide Green 3.4%

[0029] Flake graphit...

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PUM

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Abstract

A screw grease with high friction coeffieint for high-torque drill of petroleum of gas well is composite Li-base grease No.0 (38-48 wt.%) and solid powder (52-62 wt.%). Said Li-base grease is prepared from 12-hydroxystearic acid, decanedioic acid, boric acid, lithium hydroxide and basic oil. Said solid powder contains alpha-Al2O3, gamma-Al2O3, kaolinite, calcium, chromium oxide, flaky graphite, white mica and rare-earth fluoride.

Description

Technical field: [0001] The invention relates to a drilling tool thread compound, in particular to a thread compound used in drilling tools used in oil and natural gas drilling. Background technique: [0002] Drilling tool thread grease is a consumable material that must be used in drilling tools in oil and natural gas drilling. Its performance is related to the service life of drilling tools, maintenance costs, and consumption costs of drilling tools, which directly affects drilling costs. . Although the technical performance of thread grease for traditional drilling tools has been stipulated by the national oil and gas industry standard SY / T5198-1996, its key technical index—the coefficient of friction—has been unable to be measured for a long time. Although the American Petroleum Institute's "Recommended Practice for Thread Grease Test on Rotary Shoulder Joints" - the first edition in 1992, is recommended in this standard, due to the problems and failure of this method, ...

Claims

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Application Information

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IPC IPC(8): C10M129/26
Inventor 唐治澜田义川
Owner GONGTOU SPECIAL APP DEV CHENGDU CITY
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