Synthetic method of lubricating fluid loss additive and application method thereof
A fluid loss reducing agent and a synthesis method technology, which are applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve the problems of high salt, high maintenance and treatment cost of drilling fluid, high temperature, etc.
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[0022] Example 1
[0023] Synthesis of lubricating fluid loss reducer:
[0024] Add 30g of acrylic acid (AA) to 100ml of aqueous solution to obtain 30% aqueous solution of acrylic acid (AA), prepare 30% aqueous solution of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) in the same way and mix with 30% aqueous solution of acrylamide (AM) in water.
[0025] 17.5 mL of a 30% aqueous solution of acrylic acid (AA) was mixed with 17.5 mL of a 30% aqueous solution of 2-acrylamido-2-methylpropanesulfonic acid (AMPS), and the solution temperature was controlled at 10°C. Neutralize with KOH to pH=7, add 35 mL of 30% aqueous acrylamide (AM) solution, and add 0.3 g of potassium persulfate.
[0026] Using white oil as the oil phase, put 30 mL of white oil into a three-necked flask, add 3.5 mL of SP-80, and stir for 20 min. The above aqueous solution was slowly added dropwise to the three-necked flask, and the dropwise addition was completed in 10 min. During the dropwise addition, ni...
Example Embodiment
[0028] Example 2
[0029] As described in Example 1, the difference is:
[0030] 10 mL of a 30% aqueous solution of acrylic acid (AA) was mixed with 10 mL of a 30% aqueous solution of 2-acrylamido-2-methylpropanesulfonic acid (AMPS), and the solution temperature was controlled at 10°C. Neutralize with KOH to pH=7, add 50 mL of 30% aqueous acrylamide (AM) solution, and add 0.3 g of potassium persulfate.
[0031] The dosage of lubricating fluid loss reducer is 0.3%, the API filtration loss is 13.6mL, and the lubrication coefficient is 0.35.
Example Embodiment
[0032] Example 3
[0033] As described in Example 1, the difference is:
[0034] 15 mL of a 30% aqueous solution of acrylic acid (AA) was mixed with 15 mL of a 30% aqueous solution of 2-acrylamido-2-methylpropanesulfonic acid (AMPS), and the solution temperature was controlled at 10°C. Neutralize with KOH to pH=7, add 40 mL of 30% aqueous acrylamide (AM) solution, and add 0.3 g of potassium persulfate.
[0035] The dosage of lubricating fluid loss reducer is 0.3%, the API filtration loss is 13.2mL, and the lubrication coefficient is 0.29.
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