1. Petroleum industry
Water soluble polymers have important applications in the petroleum industry, and are widely used in various operations such as drilling, cementing, completion and repair, and improving oil recovery rate (EOR). AMPS has a wide range of applications in the field of oilfield chemistry, including drilling fluid treatment agents, oil well cement additives, acidifiers, fracturing agents, additives for completion and repair fluids, water plugging agents, tertiary oil recovery and displacement agents, dispersants, oily wastewater treatment agents, etc. The most common are binary, ternary, and multicomponent water-soluble copolymers formed by AMPS with monomers such as acrylamide, acrylic acid, acrylonitrile, N-ethylpyrrolidone, N, N-dimethylacrylamide, etc. The ternary copolymer made of AMPS, methacrylic acid, and acrylamide can be used as a cementing cement admixture, which can have a good high-temperature retarding effect; Copolymers with N, N-dimethylacrylamide can be used as fluid loss agents for oil well cement slurries; The graft copolymer of AMPS with calcium lignosulfonate and acrylamide is a good distribution agent, early strength agent, and reinforcing agent for cement slurry; The graft copolymer of AMPS with acrylic acid, tetrahydrobenzoic acid, lignosulfonic acid, etc. can be used to prepare drilling fluid dispersants, stabilizers with good calcium resistance, viscosity reducers, filter loss reducers, etc. In addition, AMPS and N-vinylpyrrolidone block copolymers can be used as viscosity enhancers for tertiary oil recovery. They do not degrade when used under high temperature, high pressure, and high shear conditions, and have good stability.
Research has shown that the binary and ternary copolymers of AMPS and several monomers can be directly used in drilling fluids. Mixing an appropriate amount of low molecular weight and high molecular weight copolymers of this type can greatly improve the performance of drilling fluids. AMPS, as an effective modified monomer, has penetrated into various fields of polymer modification in oilfield chemistry, and to a large extent, it has indeed solved the three most challenging issues of salt resistance, temperature resistance, and shear resistance. At present, domestic oilfield chemistry professionals have begun to use AMPS for the synthesis of EOR polymers and drilling mud additives, and have achieved preliminary results. Oil, as an extremely important and non renewable strategic resource, is attracting global attention. With the gradual depletion of oil resources, the difficulty of oil extraction is increasing, which will inevitably drive the rapid development of the oilfield chemical industry and provide huge market space for AMPS.
(1) Oil well cement admixture
The ternary copolymer prepared with AMPS, methacrylic acid, and acrylamide is suitable for various saline slurries and can play a good high-temperature retarder role. The copolymer of AMPS and acrylic acid, the copolymer of AMPS and N, N-dimethylacrylamide, and carboxymethyl hydroxylamine launched by Halliburton in the United States
(1) Oil well cement admixture
The ternary copolymer prepared with AMPS, methacrylic acid, and acrylamide is suitable for various saline slurries and can play a good high-temperature retarder role. The copolymer of AMPS and acrylic acid, as well as the composite of AMPS and N, N-dimethylacrylamide, and carboxymethyl hydroxyethyl cellulose, launched by Halliburton in the United States, can effectively reduce the high-temperature filtration loss of cement slurry as an additive for oil well cement