5results about How to "Good viscosity increasing effect" patented technology

This invention belongs to the field of oil and gas well reservoir stimulation technology, specifically relating to an emulsion for fracturing fluid suitable for bio-colloid flowback fluids and its preparation method. The fracturing fluid emulsion for bio-colloid flowback fluids, by weight, comprises the following raw material components: 80-100 parts acrylamide, 20-30 parts glycyl alanine, 5-10 parts cyclomethylsiloxane oil-in-water dispersant, 10-20 parts 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, 10-20 parts hydroxyethyl methacrylate, 15-30 parts 2-acrylamido-2-methylpropanesulfonic acid, 60-80 parts white oil, 5-10 parts emulsifier, 5-10 parts initiator, and 10-15 parts water. This fracturing fluid emulsion significantly increases the solids content while also improving the performance of the fracturing fluid product, thus exhibiting excellent thickening properties even when formulated with bio-colloid flowback fluids.

This invention relates to the field of petroleum extraction technology, and discloses a compound, a polymer with oil displacement function, its preparation method, and its application. The compound of this invention has the structure shown in formula (8); the polymer of this invention has good solubility at 20-95℃ and a salinity of 500-50000 mg / L, exhibits good viscosity-enhancing effect on the aqueous phase at high temperatures, can improve the mobility ratio, effectively expand the swept volume, and has good temperature resistance. Simultaneously, it can emulsify and disperse crude oil, reduce interfacial tension, and can be used for polymer flooding to improve oil recovery in conventional reservoirs, high-temperature and high-salinity reservoirs, and ordinary heavy oil reservoirs.

This invention relates to a weakly associative functionalized polyacrylamide and its preparation method. The functionalized polyacrylamide is obtained by copolymerization of acrylamide structural monomers, ionic structural monomers, and hyperbranched associative monomers; the mass ratio of acrylamide structural monomers:ionic structural monomers:hyperbranched associative monomers is 30-60:0-30:0.5-2. The advantage of this invention is the synthesis of a novel class of hyperbranched associative monomers. By introducing a weakly associative structure into acrylamide, the thickening ability, shear resistance, and temperature and salt resistance of polyacrylamide can be enhanced, while overcoming the influence of conventional associative monomer introduction on solubility. This results in a fast-dissolving, weakly associative polyacrylamide that can be used for aqueous solution thickening, oil and gas extraction, and other fields.

The invention discloses a salt-resistant functional monomer suitable for a high-salt oil field environment, and relates to the technical field of oil field exploitation, and the functional monomer S is a salt-resistant polymer suitable for the high-salt oil field environment and comprises the following components in parts by weight: 210-260 parts of acrylamide; 15 parts to 30 parts of AMPS (2, 2, 4-trimethyl-1 6 to 15 parts of AEO-9 (fatty alcohol polyoxyethylene ether); 20 to 50 parts of a functional monomer S; 10 to 20 parts of urea; 0.2 to 0.3 part of a 1 # initiator; 0.05 to 0.15 part of a 2 # initiator; 0.05 to 0.15 part of a 3 # initiator; 0.1 to 0.3 part of a 4 # initiator; the total amount is 1000 parts. According to the salt-resistant functional monomer suitable for the high-salt oilfield environment, a polymer synthesized by using the functional monomer has the characteristics of high salt resistance, high tackifying property, high viscosity stability and capability of being prepared by using oilfield produced sewage, and can keep good solubility and viscosity under the sewage condition, so that the oil recovery rate is increased.

The application relates to the technical field of waterproof coiled materials, and discloses a high-molecular pre-paved waterproof coiled material for tunnels, which comprises, from top to bottom, a magic tape hook surface layer, a magic tape hair surface layer, a high-molecular sheet layer, a glue-adhesive waterproof layer and an anti-adhesive layer; the glue-adhesive waterproof layer is hot-melt pressure-sensitive glue; the hot-melt pressure-sensitive glue comprises the following components by weight: 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene block copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer; the addition amount of the naphthenic oil is less than that of the polyisobutylene. The above technical scheme solves the problem of insufficient peeling strength of the glue-adhesive waterproof layer of the high-molecular pre-paved waterproof coiled material for tunnels in the related art due to the addition of the naphthenic oil.