A kind of preparation method of drilling fluid additive
An additive and drilling fluid technology, applied in the field of drilling fluids, can solve the problems of insufficient rheological properties of water-based drilling fluids, single additive properties, etc.
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Embodiment 1
[0033] A preparation method for drilling fluid additive, comprising the steps of:
[0034] The 1st step, the preparation of modified bentonite: by weight, take 1Kg of 120 mesh bentonite, place in 12mol / L sulfuric acid solution, heat and stir in 60 ℃ water bath for 5h, remove liquid by suction filtration, wash filtrate with deionized water until Neutral, dry at 150°C, put 0.2Kg of white carbon black, 0.1 Kg of colloidal graphite powder and 0.1 Kg of sodium carbonate into a grinder to grind and mix. After grinding for 2 hours, put the mixed powder into a quartz boat and heat up to 430°C, keep warm, let cool, take out, grind to 120 mesh, get modified bentonite;
[0035] Step 2, modified cellulose: take 0.8 Kg of cellulose and carry out mechanical crushing to make cellulose powder. The average length of cellulose powder is 0.5 mm, then put it into a grinder, add 95% alcohol to grind for 2 hours, and dry Dry, put into 8wt% sodium hydroxide solution and soak for 4h, take out, dry, ...
Embodiment 2
[0038] A preparation method for drilling fluid additive, comprising the steps of:
[0039] The 1st step, the preparation of modified bentonite: by weight, get 120 mesh bentonite 2Kg, place in the sulfuric acid solution of 12mol / L 65 ℃ of water bath heating and stirring for 5h, suction filtration removes liquid, washes filtrate with deionized water until Neutral, dry at 150°C, mix with white carbon black 0.5Kg, colloidal graphite powder 0.3Kg and sodium carbonate 0.3Kg, grind and mix in a grinder, after grinding for 2 hours, put the mixed powder into a quartz boat, heat up to 430°C, keep warm, let cool, take out, grind to 120 mesh, get modified bentonite;
[0040] Step 2, modified cellulose: Take 0.7 Kg of cellulose and carry out mechanical crushing to make cellulose powder. The average length of cellulose powder is 0.5mm, then put it into a grinder, add 95% alcohol to grind for 2 hours, and dry Dry, put into 8wt% sodium hydroxide solution and soak for 4h, take out, dry, and s...
Embodiment 3
[0043] A preparation method for drilling fluid additive, comprising the steps of:
[0044] Step 1, preparation of modified bentonite: in parts by weight, take 1.6Kg of 150 mesh bentonite, place it in a 12mol / L sulfuric acid solution, heat and stir in a water bath at 65°C for 5h, remove the liquid by suction filtration, and wash the filtrate with deionized water To neutrality, dry at 150°C, put 0.3Kg of white carbon black, 0.25Kg of colloidal graphite powder and 0.2Kg of sodium carbonate into a grinder to grind and mix. After grinding for 2 hours, put the mixed powder into a quartz boat and heat up to 430°C, keep warm, let cool, take out, grind to 150 mesh, and obtain modified bentonite;
[0045] Step 2. Modified cellulose: Take 0.9Kg of cellulose and carry out mechanical crushing to make cellulose powder. The average length of cellulose powder is 0.5mm, then put it into a grinder, add 95% alcohol to grind for 2 hours, and dry Dry, put into 8wt% sodium hydroxide solution and s...
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