System pH value control based synthesis process for binary copolymerization scale inhibitor
A binary copolymerization and synthesis process technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve problems such as equipment corrosion and large economic losses, achieve excellent performance, low synthesis cost, and improve anti-fouling performance Effect
Inactive Publication Date: 2014-05-21
余婧
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Problems solved by technology
Descaling is a remedial measure. During descaling, it has already resulted in reduced production and corrosion of equipment, resulting in large economic losses. Therefore, preventing the formation of scale is a good measure
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[0026] The present invention relates to a synthesis process based on the binary copolymerization antifouling agent of controlling the pH value of the system, comprising the following steps:
[0027] (a) First, prepare chelating group monomer and acrylamide according to a certain ratio;
[0028] (b) Chelating group monomer and acrylamide are added in the reaction vessel, after adding solvent to dissolve, add initiator and catalyst;
[0029] (c) Stir to allow it to fully mix, and adjust the pH value of the reaction system to 6.0 to 8.0;
[0030] (d) placing it in a water bath, and reacting at a certain temperature for a period of time to obtain a reaction product mixture;
[0031] (e) cooling the reaction product mixture, and filtering it, distilling the filtered liquid under reduced pressure, and separating to obtain the target product.
[0032] The reaction vessel is a beaker.
[0033] In the step (e), filtering is carried out through molecular sieves.
[0034] In the step...
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The invention discloses a system pH value control based synthesis process for a binary copolymerization scale inhibitor. The synthesis process comprises the steps: (a) firstly, preparing a chelated group monomer and acrylamide according to a certain ratio; (b) adding the chelated group monomer and acrylamide into a reaction vessel, then, adding a solvent for dissolving, and adding a catalyst and an initiator; (c) stirring to sufficiently and uniformly mix, and adjusting the pH value of the reaction system to 6.0-8.0; (d) placing all the components into a water bath, and reacting at a certain temperature for a period of time to obtain a reaction product mixture; (e) cooling the reaction product mixture, filtering, then, carrying out distillation separation on the filtered liquid, and then, separating to obtain the binary copolymerization scale inhibitor. By using the system pH value control based synthesis process, the binary copolymerization scale inhibitor can be successfully synthesized; the synthesized binary copolymerization scale inhibitor is favorable in performance, simple in synthesis step and low in synthesis cost; moreover, the scale inhibition performance of the binary copolymerization scale inhibitor is improved through controlling the pH value in the reaction process.
Description
technical field [0001] The invention relates to a synthesis process of a binary copolymerization antifouling agent based on controlling the pH value of the system. Background technique [0002] During the development of oil and gas fields, the fluids (oil, gas and water) in the oil and gas reservoirs flow out from the formation, through the wellbore and wellhead to the surface gathering and transportation system, due to changes in temperature, pressure and other conditions, as well as the thermodynamic instability and chemical Incompatibility leads to the destruction of oil-gas-water balance. It often causes fouling in water injection formations, oil casings, downhole, surface equipment, and gathering and transportation systems. Scaling has a great impact on the normal production of oil wells. When scales are deposited on equipment such as well bores, oil pipes, oil well pumps, water injection systems, gathering and transportation systems, heating systems, etc., the equipme...
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IPC IPC(8): C08F220/56C08F2/00C09K8/528
Inventor 余婧
Owner 余婧