本发明的油井金属管具有优异的密封性能。 本公开的用于油井的金属管(1)包括管体(10),管体(10)包括第一端(10A)和第二端(10B)。 管体(10)包括形成在第一端(10A)处的销(40)和形成在第二端(10B)处的盒(50)。 销(40)包括销接触表面(400),该销接触表面(400)包括外螺纹(41)。 盒(50)包括盒接触表面(500),盒接触表面(500)包括内螺纹(51)。 油井金属管(1)包括位于销接触面(400)和盒接触面(500)至少之一上或上方的润滑涂层(100)。 润滑涂层(100)含有腰果粉、蜡、松香和碱性芳香族有机酸金属盐。
本发明涉及一种包含至少一种基础油和至少一种增稠剂的润滑脂及其制备和用途。为了提供特别成本有效且可持续的润滑脂,建议该基础油包含:至少一种矿物油回收物,特别是至少25重量%,优选至少50重量%的矿物油回收物,并且增稠剂具有至少一定比例,特别是至少25重量%,优选为至少50重量%的聚合物回收物。
An engine oil contains a lubricating oil and an overbased calcium sulfonate having a dispersion of calcite-core micelles, which engine oil has commercial haze free properties, namely a Hazitron test value of less than about 30 and more particularly less than about 15 to 10, and commercial anti-wear properties, namely exhibiting a 4-Ball wear test scar diameter of less than 0.4 mm. The detergent has a TBN of from 100 to 400 and yet a viscosity of no more than 100,000 cps at 25 DEG C. and usually 20,000 to 30,000 cps at 25 DEG C. The overbased calcium sulfonate detergent provides a stable dispersion of calcite-core sulfonate micelles in the oil. The calcite overbased sulfonate is substantially free of amorphous, vaterite and aragonite forms of the calcium carbonate. The method of producing the improved calcite-core dispersion overbased calcium sulfonate provides for reacting an overbased amorphous calcium sulfonate having a TBN of about 400 or more with a C1 to C6 carboxylic acid or salt, such as acetic acid or calcium acetate, a C1 to C5 alkanol such as, methanol, and water, in a hydrocarbon solvent or oil, at closely controlled temperatures up to and to commensurate with the boiling point of the hydrocarbon solvent for usually about up to 1+E,fra 1/2+EE hours to convert the amorphous calcium carbonate to a stable dispersion of a calcite-core micellar structure.
A lubricating oil additive is disclosed that comprises the reaction product of: (a) an unsaturated or saturated ester or acid, (b) a diamine of the formula: (c) carbon disulfide, and (d) a molybdenum compound, wherein R8 is an alkyl group of 1 to 40 carbon atoms, R9 and R10 are independently selected aliphatic or aromatic moieties, W is oxygen, sulfur, or -CH2-. The additive imparts friction modification and beneficial antiwear, extreme pressure, and oxidation stability properties to the lubricating oil.
A unique ashless composition of matter, a method for its preparation and its use as an improved corrosion inhibitor additive for formulated industrial lubricants is disclosed.
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A lubricating composition comprises a major portion of a lubricating oil and a minor portion of an oil-soluble chromate or molybdate salt of the reaction product of a long-chain substituted succinic acid or anhydride with a di- or polyamino compound containing at least one primary amino group, said long-chain substituent being a hydrocarbon group having a molecular weight of at least 700 and said reaction product containing at least one basic nitrogen group. The long-chain substituted succinic anhydride may be obtained by reacting a normally liquid oil-soluble polyolefine having a molecular weight of 700 to 3000 with maleic anhydride. The di- or polyamino compounds may have the formula where R is H or an alkyl of 1 to 6 carbon atoms and "n" is an integer of 1 to 8 or more. Amines such as N-amino alkyl piperazines, N-dialkyl amino alkyl amines and the reaction products of polyalkylene polyamines in which "n" is at least 2 with g -butyro lactone, g -valerolactone, or dicyandiamide, may also be used. The lubricating compositions may also contain copper deactivators, pour-point depressants, antioxidants, viscosity index improvers and other conventional additives. Preferred anti-oxidants are the zinc salts of dialkyl dithiophosphoric acids derived from C3 to C10 alcohols. Cold sludge dispersant properties of the chromate or molybdate salt in lubricants is tested using the sludge from a Lauson engine and a plain mineral oil free from additives such as a light spindle oil. Solutions of the salt additives in mineral oil are also tested and " Panel Coker Tests " are also carried out, the base oil being a refined mineral oil of viscosity 160 secs. Redwood I at 140 DEG F. and there being present in each case 0.9% of a mineral oil concentrate of mixed zinc dialkyl dithiophosphates derived from isopropanol and capryl alcohol. Specific lubricating oil blends exemplified are (1) mineral oil A + mineral oil B + methacrylate viscosity index improver in mineral oil + additive A + a mineral oil concentrate of a zinc dialkyl dithiophosphate derived from isopropanol and capryl alcohol + reaction product of polyisobutenyl succinimide and CrO3 and (2) as in (1) except that the chromate of the product of polyisobutenyl succinic anhydride with the reaction product of dicyandiamide with triethylene tetramine is used. Mineral oil A is a pale spindle oil of viscosity 52 Redwood secs. No. 1 at 140 DEG F., mineral oil B is a solvent refined mineral oil of viscosity 100 Redwood secs. No. 1 at 140 DEG F., additive A is the barium salt of a phosphosulphurized polyisobutylene.ALSO:An oil-soluble chromate or molybdate salt of the reaction product of a long-chain substituted succinic acid or anhydride with a di- or polyamine compound containing at least one primary amino group, said long-chain substituent being a hydrocarbon group having a molecular weight of at least 700 and said reaction product containing at least one basic nitrogen group, is obtained by heating a mixture of an oil concentrate of the succinic acid or anhydride/di- or polyamino compound reaction product together with chromic or molybdic oxide or oxide ammonium molybdate in the presence of water, at a temperature from 80 DEG to 100 DEG C. The long-chain substituted succinic anhydride may be obtained by reacting a normally liquid oil-soluble polyolefine having a molecular weight of 700 to 3000 with maleic anhydride. The di- or polyamino compounds may have the formula where R is H or an alkyl of 1 to 6 carbon atoms and n is an integer of 1 to 8 or more. Alternatively amines such as N-amino alkyl piperazines and N-dialkyl amino alkyl amines may be used as well as the reaction products of polyalkylene polyamines in which n is at least 2 with g -butyro lactone, g -valerolactone, or dicyandiamide. The salts may be used as lubricating oil additives.
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