Composite lubricant for drilling fluid, preparation method and application thereof
A compound lubricant and drilling fluid technology, which is applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of increased drill pipe wear, limited lubricant application range, and unenvironmental protection of lubricating oil, and achieves temperature resistance It has good thermal stability, is suitable for widespread application, and realizes the effect of resource reuse.
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Embodiment 1
[0049] The raw materials of the lubricant are proportioned according to the following quality:
[0050] Fatty alcohol polyoxyethylene ether 60kg, glycerin fatty acid ester 30kg, waste animal fat 40kg, styrene 5kg, water-soluble carbon black 9kg, graphene 5kg, tricresyl phosphate, triphenyl phosphate 3kg, sodium lignin 1kg, silane Antifoaming agent 3kg;
[0051] The preparation method is as follows:
[0052] 1) First add fatty alcohol polyoxyethylene ether, glycerin fatty acid ester, waste animal fat and styrene into the stirring tank, and heat up to 80-90°C while stirring;
[0053] 2) Add water-soluble carbon black, graphene, tricresyl phosphate, triphenyl phosphate, sodium ligninate, and silane defoamer into the stirring tank in sequence, and control the temperature between 50-70°C while stirring. After fully stirring and mixing for 10-20 minutes, the lubricant is obtained, which is packed into a 10kg / bag finished product and stored in a dry place at room temperature.
Embodiment 2
[0055] The raw materials of the lubricant are proportioned according to the following quality:
[0056] Fatty alcohol polyoxyethylene ether 90kg, propylene glycol monooleate 60kg, waste animal fat 20kg, styrene 10kg, water-soluble carbon black 5kg, graphene 2kg, dialkyl dithiocarbamate 1kg, sodium lignate , polyacrylamide 3kg, silane defoamer 1kg;
[0057] The preparation method is as follows:
[0058] 1) After the water-soluble carbon black, biomass graphene and water are miscible, ultrasonic treatment is carried out. The power of the ultrasonic wave is 1000w, and the ultrasonic wave is used for 5 minutes to disperse and form a uniform mixed solution for later use;
[0059] 2) Add fatty alcohol polyoxyethylene ether, propylene glycol monooleate, waste animal fat and styrene into the stirring tank, heat up to 80-90°C while stirring, and stir for 10 hours;
[0060] 3) Add the mixed solution containing water-soluble carbon black, biomass graphene, dialkyl dithiocarbamate, sodi...
Embodiment 3
[0062] The raw materials of the lubricant are proportioned according to the following quality:
[0063] Fatty alcohol polyoxyethylene ether 65kg, triethanolamine oleate 55kg, waste animal fat 25kg, styrene 7kg, water-soluble carbon black 6kg, biomass graphene 3kg, triphenyl phosphate, triethyl phosphate 2kg, ligninic acid Sodium, cellulose derivatives 2kg, silane defoamer 2kg;
[0064] The preparation method is as follows:
[0065] 1) First, water-soluble carbon black, biomass graphene and water are miscible, and then ultrasonic treatment is performed. The power of the ultrasonic wave is 500w, and the ultrasonic wave is used for 30 minutes to disperse and form a uniform mixed solution, which is ready for use;
[0066] 2) Add fatty alcohol polyoxyethylene ether, triethanolamine oleate, waste animal fat and styrene into the stirring tank, heat up to 80-90°C while stirring, and stir for 18 hours;
[0067] 3) Add the mixed solution containing water-soluble carbon black, biomass ...
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