Antifreezing foaming drainage agent, and preparation method and application thereof
A foam drainage agent and reaction container technology, which is applied in chemical instruments and methods, earthwork drilling, and fluid extraction, etc., can solve the problems of inability to perform drainage and gas extraction, affect normal production, and produce unstable production, and improve thermal stability. and salt tolerance, good compounding and synergistic effect, the effect of lowering freezing point
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[0028] Example 1
[0029] This embodiment provides an antifreeze foam drainage agent.
[0030] In terms of weight percentage, the raw material composition of the antifreeze foam drainage agent is: fatty alcohol polyoxyethylene ether phosphate sodium salt 30%, sodium α-olefin sulfonate 20%, polyanionic cellulose 2.5%, and coconut diethanolamide 1.5%, ethylene glycol 3%, potassium carbonate 1.5%, sodium chloride 1.2%, urea 0.8%, sodium acetate 0.6%, and the balance is water.
[0031] The preparation steps of the foaming agent in this embodiment are as follows:
[0032] (1) Add fatty alcohol polyoxyethylene ether phosphate sodium salt and α-olefin sulfonate sodium to the reaction kettle in sequence, and stir at room temperature for 25 minutes, and the stirring speed is 300 rpm;
[0033] (2) Add polyanionic cellulose and coconut acid diethanolamide to the above reaction kettle in sequence, and stir at room temperature for 15 minutes at a stirring speed of 300 rpm;
[0034] (3) Add ethylene ...
Example Embodiment
[0065] Example 2
[0066] This embodiment provides an antifreeze foam drainage agent.
[0067] In terms of weight percentage, the raw material composition of the antifreeze foam drainage agent includes: fatty alcohol polyoxyethylene ether phosphate sodium salt 25%, sodium α-olefin sulfonate 15%, polyanionic cellulose 2%, and coconut oil diethanolamide 1%, isopropanol 2%, potassium carbonate 1.2%, sodium chloride 1%, urea 0.6%, sodium acetate 0.5%, and the balance is water.
[0068] The preparation steps of the antifreeze foam drainage agent in this embodiment are as follows:
[0069] (1) Add fatty alcohol polyoxyethylene ether phosphate sodium salt and α-olefin sulfonate sodium to the reaction kettle in sequence, and stir at room temperature for 20 minutes at a stirring speed of 200 rpm;
[0070] (2) Add polyanionic cellulose and coconut acid diethanolamide sequentially to the above-mentioned reaction kettle solution, and stir at room temperature for 10 minutes at a stirring speed of 2...
Example Embodiment
[0102] Example 3
[0103] The antifreeze foam drainage agent provided in the above examples 1 and 2 is applied to the drainage and gas production of natural gas wells, and the wellhead dosing tank (such as figure 1 (Shown), the liquid antifreeze foam drainage agent is added from the casing into the wellbore. After the pressure is balanced, the liquid flows to the bottom of the well by its own gravity, mixes with the fluid at the bottom of the well, and generates foam after being agitated by the airflow, thereby reducing The back pressure at the bottom of the well is improved, the water-carrying capacity of the gas flow is improved, and the purpose of increasing the natural gas production is achieved.
[0104] The construction steps of adding medicine (adding antifreeze foam drainage agent) to natural gas well casing are as follows:
[0105] 1) Close the outlet valve (9) and balance valve (6) of the dosing tank (3), and open the drain valve (4) to drain;
[0106] 2) Open the feeding i...
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