34 results about "Methallyl sulfonate" patented technology

The invention provides a method for volume acid-fracturing reformation of a seam net of a carbonate reservoir. The method specifically comprises the following steps: (1) injecting low-viscose resistance-reducing sliding acid liquor, performing plunger injection for at least three times and performing volume fracturing reformation of the seam net; (2) injecting a water-based sand-carrying fracturing fluid and forming sand-filling cracks in length not less than 120 meters on the two sides of a well shaft; (3) injecting a displacement fluid, closing the well and then draining the liquid, wherein the low-viscose resistance-reducing sliding acid liquor is composed of 5-20% of acid, 1-3% of alkyl quaternary ammonium salt, 0.5-2% of sodium ascorbate, 0.1-0.5% of emulsion corrosion inhibitor, 0.5-1% of citric acid, 1-3% of discharge aiding agent and the balance of water; the emulsion corrosion inhibitor is selected from any one of polypropylene glycol emulsion, polyvinylpyrrolidone emulsion, acrylamide and 2-crylic acid-2-methallyl sulfonate copolymer emulsion; and the acid is selected from hydrochloric acid, formic acid, acetic acid or bionic acid. The method is simple in construction, the flow conductivity of the seam net is high and the yield-increasing effect is excellent.

The invention belongs to the technical field of compositions for improving breaking effects, and specifically discloses a preparation method of a film covered supporting agent for fracturing. The method comprises the following steps: (1) preparing raw materials; (2) adding water to a reaction kettle, and increasing the temperature; (3) stirring; adding acrylamide, 2-acryloylamino-2-methallyl sulfonate, polyene amine and dimethyl diallyl ammonium chloride; and continuously stirring after adding the raw materials; (4) stirring when the temperature of the materials is maintained at 65-75 DEG C; adding an initiator; and continuously stirring for 4-7min; (5) reacting for 3.5-4.5h to obtain a drag reducer; and discharging when the drag reducing rate of the drag reducer is more than 25%; otherwise, adding a sodium hydroxide solution for adjusting; and (6) mixing the drag reducer and a supporting agent body on the basis of the mass ratio of 0.8-1.5 to 100; and covering the drag reducer on thesurface of the supporting agent body to obtain the film covered supporting agent for fracturing.

High-polymer curing resin of a coating agent for a drilling fluid is prepared from raw materials as follows: 800-1,000 parts of clear water, 100-120 parts of vegetable gum, 0.5-1.0 part of a catalyst,0.2-0.7 parts of an initiator, 80-100 parts of 2-acryloylamino-2-methallyl sulfonate, 30-50 parts of N,N-dimethylacrylamide, 10-20 parts of 4-vinylpyridine, a pH regulator, 3-7 parts of talc powder and 2-5 parts of calcium carbonate, wherein the dosage of the pH regulator should meet the requirements for pH value of a solution after regulation; the vegetable gum is water-soluble vegetable gum; the catalyst is sulfuric acid; the initiator is one or two of an ammonium persulfate-sodium hydrogen sulfite system and a potassium persulfate-sodium hydrogen sulfite system. At the high temperature of200 DEG C, the resin has good coating inhibition performance, and the rolling recovery rate of mud shale can reach 90%; the high-polymer curing resin has good salt and calcium pollution resistance, filtrate loss reduction ability and capability of improving rheological property of the drilling fluid. A preparation process is simple, low in cost, good in environmental protection effect and wide inapplication range.

The invention belongs to the field of waste recycling and specifically relates to a sintering-free brick containing engineering muck and a manufacturing method thereof. The sintering-free brick comprises the following raw materials in parts by weight: 15-20 parts of engineering muck, 3-5 parts of iron-ore slag, 10-12 parts of gangue, 4-7 parts of gypsum, 6-8 parts of shale, 1-2 parts of celluloseether, 1-2 parts of fine white carbon black and 0.5-0.8 part of viscosity modifier. Before use, the engineering muck is treated with the viscosity modifier which is prepared according to the followingsteps: mixing methallyl sulfonate, sodium persulfate and urea at a mass ratio of (1-1.2):(2-2.5):(0.2-0.3):(0.1-0.2), and then putting into a 3-5% sodium hydroxide solution and reacting for 60-70minat 55-60 DEG C. Thus, the viscosity of engineering muck can be effectively increased, so that the strength and quality of the prepared end product of brick can be effectively promoted. Cellulose etherand fine white carbon black are added into the raw materials, so that the strength and compressive property of the prepared end product can be promoted.

The invention discloses an environment-friendly composite corrosion and scale inhibitor and a preparation method and use method thereof. The environment-friendly composite corrosion and scale inhibitor is prepared from, by weight percentage, 37-75% of a phosphorus-free and zinc-free scale inhibitor, 10-22% of a phosphorus-free and zinc-free corrosion inhibitor and the balance deionized water, wherein the phosphorus-free and zinc-free scale inhibitor is one or more of sodium gluconate, disodium ethylene diamine tetraacetate or an acrylic acid-2-acrylamide-2-methallyl sulfonate copolymer, and the phosphorus-free and zinc-free corrosion inhibitor is a compound of fatty acid polyoxyethylene ether and secondary alkyl sodium sulfonate. The composite corrosion and scale inhibitor does not containphosphorus and zinc, environmental pollution caused by phosphorus or zinc in water is avoided, and the requirement of environmental protection is met. Moreover, the preparation method and use methodof the environment-friendly composite corrosion and scale inhibitor are simple, and the environment-friendly composite corrosion and scale inhibitor is conveniently prepared and applied.

The invention provides composite environment-friendly waterproof dry-mixed mortar and a preparation method thereof. The composite environment-friendly waterproof dry-mixed mortar is prepared from cement, sand, modified polymer latex powder, admixtures and chemical additives, wherein the sand is composed of fine sand and kaolin tailing sand, the modified polymer latex powder is siloxane-styrene-acrylate copolymer latex powder, the admixtures comprise high-calcium fly ash, steel slag micropowder and modified chrysotile fibers, and the chemical additives comprise modified waterproof adhesive powder, dialkyl polysiloxane, methacrylic acid, hydroxyethyl methyl cellulose and 2-acrylamide sodium 2-methallyl sulfonate. In this way, the composite environment-friendly waterproof dry-mixed mortar is high in compressive strength, good in waterproof performance, high in cracking resistance and shrinkage resistance and low in cost.

The invention provides composite environment-friendly waterproof dry-mixed mortar and a preparation method thereof. The composite environment-friendly waterproof dry-mixed mortar is prepared from cement, sand, modified polymer latex powder, admixtures and chemical additives, wherein the sand is composed of fine sand and kaolin tailing sand, the modified polymer latex powder is siloxane-styrene-acrylate copolymer latex powder, the admixtures comprise high-calcium fly ash, steel slag micropowder and modified chrysotile fibers, and the chemical additives comprise modified waterproof adhesive powder, dialkyl polysiloxane, methacrylic acid, hydroxyethyl methyl cellulose and 2-acrylamide sodium 2-methallyl sulfonate. In this way, the composite environment-friendly waterproof dry-mixed mortar is high in compressive strength, good in waterproof performance, high in cracking resistance and shrinkage resistance and low in cost.

The invention discloses a metal surface dewaxing agent, and belongs to the field of metal surface treatment. A prepared solubilizing additive is a polymer with amphiprotic hydrophobic association prepared by emulsifying through the compounding of Span-80 and alkanolamide, and the grafted-copolymerization of acrylamide and 2-acryloylamino-2-methallyl sulfonate, and has high stability, corrosion resistance and an anti-static performance; an adhered waxy molecule is quickly dispersed in water by utilizing a hydrophilic group, so that the dewaxing efficiency is improved; a prepared adsorption corrosion-inhibition protection agent is added with benzyl chloride and epoxy chloropropane so as to carry out quaterisation, and a film can be quickly formed on ta metal surface by utilizing a good micelle assembling performance, so that a workpiece protection performance is improved; and an added dewaxing cleaning active agent is compounded by fatty alcohol polyoxyethylene ether and the like, and the solvent is used for solubilizing so as to accelerate the stripping speed, so that the dewaxing efficiency is improved, and a workpiece is protected. The metal surface dewaxing agent provided by theinvention solves the problems that a current dewaxing agent is low in dewaxing efficiency and easy to corrode the workpiece.

The invention provides a method for volume acid-fracturing reformation of a seam net of a carbonate reservoir. The method specifically comprises the following steps: (1) injecting low-viscose resistance-reducing sliding acid liquor, performing plunger injection for at least three times and performing volume fracturing reformation of the seam net; (2) injecting a water-based sand-carrying fracturing fluid and forming sand-filling cracks in length not less than 120 meters on the two sides of a well shaft; (3) injecting a displacement fluid, closing the well and then draining the liquid, wherein the low-viscose resistance-reducing sliding acid liquor is composed of 5-20% of acid, 1-3% of alkyl quaternary ammonium salt, 0.5-2% of sodium ascorbate, 0.1-0.5% of emulsion corrosion inhibitor, 0.5-1% of citric acid, 1-3% of discharge aiding agent and the balance of water; the emulsion corrosion inhibitor is selected from any one of polypropylene glycol emulsion, polyvinylpyrrolidone emulsion, acrylamide and 2-crylic acid-2-methallyl sulfonate copolymer emulsion; and the acid is selected from hydrochloric acid, formic acid, acetic acid or bionic acid. The method is simple in construction, the flow conductivity of the seam net is high and the yield-increasing effect is excellent.

The invention relates to the field of lithium ion batteries, and discloses preparation and application of a lithium battery negative electrode protective layer lithium polymethylallyl sulfonate aiming at the problem that an existing lithium battery is lack of an excellent lithium battery negative electrode protective layer, and the preparation method comprises the following steps: (1) dissolving methallyl sulfonic acid in water, adding a lithium hydroxide aqueous solution for reaction under the conditions of ice bath and nitrogen, after the reaction is finished, adding diluted hydrochloric acid until a solid is separated out, fully conducting stirring, conducting filtering, and collecting the solid to obtain lithium methallyl sulfonate; and (2) carrying out heating reaction on lithium methallyl sulfonate, triethyl aluminum and a solid catalyst, adding acidified ethanol to terminate the reaction, conducting filtering, and conducting drying to obtain the lithium polymethallyl sulfonate. The lithium negative electrode is spin-coated with a lithium polymethallyl sulfonate functional protection layer, so that the cycle performance of the lithium battery is effectively improved, the loss of active substances caused by corrosion reaction of electrochemical reaction products and the lithium metal negative electrode is reduced, the growth of lithium dendrites is prevented, the cycle performance of the lithium battery is improved, and the service life of the lithium battery is prolonged.