Self-repairing multi-soap based composite bearing lubricating grease and preparation method thereof

A bearing lubrication and self-repairing technology, which is applied in the direction of lubricating composition, base material, earthwork drilling, etc., can solve problems such as outstanding single performance, grease failure, drill bit bearing failure, etc., achieve good extreme pressure bearing load, improve durability The effect of grinding ability and close coordination

Active Publication Date: 2006-07-19
SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The main problem faced by the roller cone bit bearing grease used for petroleum geological exploration and drilling is the early wear and failure of the bearing caused by extreme pressure, heavy load, high temperature, and high impact and vibration.
The harsh environment of underground drilling will cause the bearing of the roller cone bit to face extremely high frictional heat generation. The generation of a large amount of frictional heat will easily cause early failure of the grease. Failure to clean the secondary surface in a timely manner will accelerate the rate of wear and eventually lead to premature failure of the bit bearing, thereby jeopardizing the life of the roller cone bit
[0003] In the relevant patents at home and abroad, in the Chinese patent document CN200410036957, the thickener is composed of calcium sulfonate and polyurea, and polyurea has the problem of insufficient colloidal stability, and calcium sulfonate soap cannot make up for this defect, so its Oxidation performance and load-carrying performance cannot be guaranteed at the same time, and because the reasonable co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] It is formulated by weight from the following components and contents of raw materials:

[0038] 20 parts of 150BS bright oil, 15 parts of polyalphaolefin,

[0039] 5 parts of synthetic fluorinated polyether, 5 parts of synthetic polyhydrocarbyl ester,

[0040] 5 parts of calcium benzene sulfonate, 2 parts of calcium borate,

[0041] Calcium salicylate 2 parts, acetic acid 8 parts,

[0042] Caprylic acid 3 parts, 12-hydroxystearic acid 3 parts,

[0043] 3 parts calcium hydroxide, 1 part lithium hydroxide hydrate,

[0044] 0.5 part of octyl substituted diphenylamine antioxidant additive, 0.5 part of alkyl thiadiazole metal deactivator,

[0045] 15 parts of tungsten disulfide extreme pressure additive, 5 parts of polarized graphite anti-wear additive,

[0046] 4 parts of nano-metallic silver filler, 1.8 parts of glycerol,

[0047] 0.2 parts of lead acetate.

[0048] Preparation:

[0049] Add 20 parts of 150BS bright stock to the refining kettle according to the me...

Embodiment 2

[0052] It is formulated by weight from the following components and contents of raw materials:

[0053] SN750 paraffin-based mineral oil 13 parts, 150BS bright oil 15 parts,

[0054] 10 parts of poly-alpha olefin, 5 parts of synthetic fluorinated polyether,

[0055] 5 parts of polyalkylene naphthalene, 5 parts of synthetic polyhydrocarbyl ester,

[0056] 6 parts of calcium benzenesulfonate, 2 parts of boric acid,

[0057] 2 parts of salicylic acid, 5 parts of acetic acid,

[0058] Caprylic acid 2 parts, 12-hydroxystearic acid 2 parts,

[0059] Calcium Hydroxide 4 parts, Lithium Hydroxide Hydrate 1 part,

[0060] 0.5 part of substituted diphenylamine antioxidant additive, 0.5 part of heterocyclic sulfur nitride metal deactivator,

[0061] 12 parts of tungsten disulfide extreme pressure additive, 3 parts of polarized graphite anti-wear additive,

[0062] 2 parts of nano-metallic silver, 3 parts of fluorocarbon polymer,

[0063] 1.5 parts of glycerol, 0.5 parts of lead ace...

Embodiment 3

[0068] It is formulated by weight from the following components and contents of raw materials:

[0069] 18 parts of SN750 paraffin-based mineral oil, 10 parts of 150BS bright oil,

[0070] 8 parts of poly-alpha olefin, 6 parts of synthetic fluorinated polyether,

[0071] 4 parts of polyalkylene naphthalene, 6 parts of synthetic polyhydrocarbyl ester,

[0072] 1 part of calcium benzenesulfonate, 5 parts of boric acid,

[0073] 2 parts of salicylic acid, 6 parts of acetic acid,

[0074] Caprylic acid 1 part, 12-hydroxystearic acid 3 parts,

[0075] Calcium Hydroxide 4 parts, Lithium Hydroxide Hydrate 1 part,

[0076] 0.5 part of alkylated phenol antioxidant additive, 0.5 part of tolyltriazole metal deactivator,

[0077] 13 parts of tungsten disulfide extreme pressure additive, 2 parts of activated graphite anti-wear additive,

[0078] 2 parts of nano-metallic silver self-healing filler, 2 parts of fluorocarbon polymer,

[0079]1.5 parts of glycerol, 0.5 parts of lead acet...

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PUM

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Abstract

The related composite poly-soap self-repair bearing lubricating grease comprises the basic liquid, composite calcium sulfonate, composite Ca-Li-base thickener, non-oxidizing anti-corrosion additive, metal deactivator, tungsten disulfide extreme pressure additive, wear-well additive, self-repair additive, and structural modifier; has well anti-oxidation ability and bearing capacity, can repair wore part on condition of extreme pressure and high temperature to supply the silver-plating lacking on bearing radial surface effectively, prolongs bearing service time on maximum limit, and has special application in oil drilling exploration.

Description

field of invention [0001] The invention relates to a composite multi-soap base self-repairing bearing lubricating grease and a preparation method thereof, in particular to a composite multi-soap base self-repairing bearing lubricating grease used for roller cone bits in the field of petroleum geological exploration and drilling and a preparation method thereof. Background of the invention [0002] The main problems faced by the roller cone bit bearing grease used for petroleum geological exploration and drilling are the early wear and failure of the bearing caused by extreme pressure, heavy load, high temperature, and high impact and vibration. The harsh environment of underground drilling will cause the bearing of the roller cone bit to face extremely high frictional heat generation. The generation of a large amount of frictional heat will easily cause early failure of the grease. Failure to clean the secondary surface in a timely manner will accelerate the rate of wear and...

Claims

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Application Information

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IPC IPC(8): C10M169/04E21B10/24C10M107/02C10M125/22C10M135/10C10M133/44
Inventor 樊凤山郭国忠张烈华杨忠新
Owner SINOPEC OILFIELD EQUIP CORP
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