247results about How to "Improve foam stability" patented technology

A method for enhancing foam stability in foaming compositions for use in oilfield treatment application, including but not limited to use in mobility control for gas flooding. The method comprises the step of adding to a foaming composition a foam stabilizer of formula (I):

wherein R₁ is an alkylamido group or a branched or linear alkyl group; R₂ and R₃ are individually hydrogen or a methyl group; R₄, R₅ and R₆ are individually hydrogen or a hydroxy group, with the proviso that at least one of R₄, R₅ or R₆ is a hydroxyl group; wherein the alkyl group has greater than about 10 carbon atoms. Also disclosed are methods to enhance foam stability in an aqueous foaming composition.

This invention provides a hydraulic oil comprising: 1) a lubricant base oil having an average molecular weight greater than 475, a viscosity index greater than 140, and a weight percent olefins less than 10; and 2) an antiwear hydraulic oil additive package. The hydraulic oil of this invention has an air release by ASTM D 3427-03 of less than 0.8 minutes at 50 degrees C., and a sequence II foam tendency by ASTM D 892-03 of less than 50 ml. We describe a process for making the hydraulic oil of this invention, and a method of operating a hydraulic pump without pump cavitation using the hydraulic oil of this invention.

The invention relates to high-performance foaming cement, which comprises cement slurry and foams, wherein the cement slurry is prepared from the following raw materials in parts by weight: 100 parts of cement, 10-30 parts of gypsum powder, 10-50 parts of active admixtures, 10-40 parts of mineral admixtures, 1-5 parts of re-dispersible gelatine powder, 0.5-1.5 parts of cellulose ether, 0.2-1.0 part of water reducing agent, 0.1-0.5 part of water repellent and 40-90 parts of water; and the foams are prepared from the following components in parts by weight: 1 part of foaming agent, 0.2-0.8 part of foam stabilizer and 30-50 parts of water. A preparation method of the high-performance foaming cement comprises the steps of: (1) preparing the cement slurry; (2) preparing the foams by using a foaming machine; and (3) mixing and uniformly stirring the cement slurry and the foams according to the weight ratio of 1:(0.1-1), and pouring and molding. The high-performance foaming cement disclosed by the invention has high closed porosity and small shrinkage value, and integrates the performances of heat insulation, sound insulation, water repellent, shock resistance, fire protection, durability, low carbon and environmental protection into a whole.

The invention provides a synergistic surfactant composition comprising: (a) from 5 to 95 wt % of a first surfactant which is selected from derivatives of alkyl polyglucosides and mixtures thereof; and (b) from 5 to 95 wt % of a second surfactant which is selected from: amphoteric surfactants, cationic surfactants, anionic surfactants, non-ionic surfactants, and mixtures thereof. This surfactant composition may be used to generate foam that is used for unloading a liquid from a hydrocarbon reservoir. It may be that the liquid unloading of foam generated using the surfactant composition is greater than that of foam generated from the first and second surfactants when they are foamed individually.

The invention provides egg white powder with high foamability and a preparation method thereof and relates to reconstruction of whey protein structure and functional properties, belonging to the technical field of biological processing of foodstuffs. According to the invention, on the basis of preliminary work, enzymatic hydrolysis of lipase in advance and cooperative enzymatic hydrolysis of composite protease are utilized for treatment of egg white; total usage amount of lipase and composite protease is less than usage amount of individually used lipase or protease, and however, foamability and foam stability of egg white powder obtained by combined utilization of lipase and composite protease are higher than those of egg white powder obtained by individual utilization of lipase or composite protease; the egg white powder obtained in the invention can meet demands for high-grade products on the market, and the advantages of a simple process and high cost performance are achieved in the invention. According to the invention, the ratio of active usage amount of Aspergillus oryzae protease, papain and trypsin is determined to be 1:1:1; the usage amount and other technological parameters cooperatively allow egg white powder with high foamability to be obtained; egg white powder with high foamability provided in the invention enables the additional output value of eggs to be increased, lays a technical foundation for development and industrial production of special-purpose egg white powder products and increases economic benefits for enterprises.

Silicone-polyether block copolymer comprising a polyorganosiloxane which includes at least one polyether residue having a molecular weight of not less than 5000 g/mol, and wherein a weight average molecular weight of all polyether residues attached to the polyorganosiloxane by a chemical bond is above 3000 g/mol, its production and use and also compositions and polymeric articles obtained therewith.

A method for increasing the foam stability of foams made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of an amphiphilic polymeric foam stabilizer containing at least one portion that is a partially hydrolyzed polyvinyl ester or partially hydrolyzed polyacrylate. The foam stabilizer allows foams to be used at temperatures at which the unfoamed fluids would not have stable viscosity, and allows use of lower viscoelastic surfactant concentrations in the liquid phase. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.

The invention relates to a fracturing fluid system used in an oil and gas field, in particular to a fracturing fluid system of CO2 cleaning foam. The fracturing fluid system comprises the following components in percentage by weight: 0.3-0.8 percent of water-soluble hydrophobic association polymer, 0.25-0.55 percent of rheological auxiliary agent, 0.5-3.0 percent of clay stabilizer, 0.1-0.5 percent of foaming agent, 0.01-0.2 percent of gel breaker, 30.0-80.0 percent of liquid CO2 and the balance of water. Compared with the prior art, in the fracturing fluid system of the CO2 cleaning foam, a cross-linking agent is not needed, the foamability is good, the foam stability is high, the sand-carrying capability is strong, gel breaking is easy to control, no residue is generated after gel breaking, the superficial/interfacial tension of gel-breaking liquid is low, and the damage to the formation is less, and therefore, the fracturing fluid system can be used for fracturing modification of hypoisotonic, low-pressure and water-sensitive storage layers at the temperature of 60-140 DEG C.

The invention discloses a method for preparing high-foamability egg albumen powder by efficiently desalting salted egg albumen, which comprises the following steps of: mixing the salted egg albumen with water, adjusting the pH value of the mixed liquid to 2.5 to 4.0, heating the mixed liquid, adjusting the pH value of the heated liquid to 5.6 to 7.5, and filtering the heated liquid to obtain precipitate; mixing the precipitate with the water, performing homogenization, filtering to obtain the precipitate, and repeating the step once; mixing the obtained precipitate with the water, adding protease to perform enzymolysis, heating the mixed solution for 15 to 30 minutes at the temperature of between 95 and 100 DEG C when the hydrolyzing degree reaches 3 to 6 percent and inactivating the enzyme to end the enzymolysis reaction and obtain enzymolysis liquid; uniformly mixing the enzymolysis liquid with carboxymethyl cellulose (CMC) and spraying and drying to obtain the high-foamability egg albumen powder. The method has the advantages that: the conditions are mild; the protein recovery rate reaches 85 to 90 percent; and the salted egg albumen powder after the desalination has high foamability and no saline and bitter tastes.

A subterranean fracturing fluid, which is relatively harmless to both the environment and subterranean formations includes an amphoteric surfactant, specifically a betaine surfactant and an organic electrolyte or an alcohol in an aqueous medium. Depending upon the proportions of the ingredients, the fluid can be foamed.

Disclosed herein is a foamed tobacco composition which includes tobacco particles, water and a foam stabilizer which is a hydrophobically modified hydroxyalkylated carbohydrate. In another form of the invention, the foam stabilizer is a hydrophobically modified cellulose ether. The foam stabilizer enables foaming to take place at significantly higher temperatures than are required when conventional foam stabilizers are used, thereby improving the efficiency of the foaming process. A tobacco product and a method of making a tobacco product also are disclosed.

The invention relates to the field of bioengineering, particularly to a method for improving properties of wheat germ protein with ultrasonic wave. The method comprises extracting albumin and globulin from defatted wheat germ powder, respectively, and treating wheat germ albumin and globulin solution with ultrasonic wave. The inventive method can remarkably improve the solubility, effervescence, effervescent stability, emulsifying property and emulsifying stability of the wheat germ albumin and globulin.

The invention discloses a preparation method for peanut bioactive peptide. The method comprises the following steps: adding peanut protein powder to distilled water, carrying out stirring, followed by standing and microwave treatment to obtain peanut protein powder suspension liquid; adjusting a pH value of the peanut protein powder suspension liquid through a hydrochloric acid solution, then adding compound plant hydrolase Viscozyme L, followed by carrying out the microwave treatment to secondarily carry out enzymolysis to obtain a enzymatic hydrolysate, then killing the enzymes and carryingout cooling to a room temperature; adjusting a pH value of the enzymatic hydrolysate through a sodium hydroxide solution or the hydrochloric acid solution, then adding protease and carrying out the microwave treatment to secondarily carry out the enzymolysis, then killing the protease and carrying out cooling to the room temperature, followed by carrying out centrifugating and freeze drying to obtain the peanut bioactive peptide. The prepared peanut bioactive peptide product provided by the present invention has functional properties of high dissolubility, high emulsibility, strong foamability, good emulsion stability, good foam stability and the like. In addition, the method provided by the present invention is applicable for the industrial production.

The invention relates to the technical field of fire extinguishing agents, in particular to a fire extinguishing agent composition, and a preparation method and application thereof. The fire extinguishing agent composition comprises an organic silicon surfactant, a hydrocarbon surfactant, an organic cosolvent, a foam additive and the like. The foam extinguishing agent has main advantages of not containing a fluorocarbon surfactant, and a polyether modified polysiloxane type organic silicon surfactant and/or a polyether trisiloxane organic silicon surfactant are/is used; on the basis of environmental protection, a compound of an anionic hydrocarbon surfactant, a nonionic hydrocarbon surfactant and an amphoteric hydrocarbon surfactant is adopted for compounding, so that better foam performance and fire extinguishing performance can be achieved; through joint adjustment and dosage matching of multiple components, low surface tension, good foaming performance and foam stabilizing performance and efficient fire extinguishing performance are achieved, and the defect that foaming performance and foam stabilizing performance of an organosilicon surfactant is relatively poor is overcome. .The fire extinguishing agent composition can achieve spreading boundary on an oil surface, can be degraded easily, is environmentally friendly, and is often applied to extinguishing oil fire.

The invention discloses an environment-friendly compound concrete foaming agent and a preparation method thereof. The environment-friendly compound concrete foaming agent comprises the following components: sodium alpha-olefin sulfonate, alkyl glycoside, methyl ester sulfonate, cocamidopropyl betaine, tea saponin, arabic gum, hydroxypropyl methyl cellulose, gelatin, polyanionic cellulose, polyvinyl alcohol and sodium bentonite. The environment-friendly compound concrete foaming agent disclosed by the invention is alkalescent, achieves the pH value of 7-9, has the advantages of high foaming power, large foam expansion, fine uniform and tough foam, durability, stability, long foam stabilizing time, small bleeding amount, small deposition amount, good hard water resistance and suitability for water with various rigidities.

A method for preparing liquid-state egg food by non-heat sterilizing technique to elongate its cold storage period to 3 weeks includes such steps as degassing, ultrafiltering for desalting, sterilizing by high-voltage pulse electric field and adding lysozyme, and aseptic bottling.

The invention relates to a salt-resistant and high-temperature-resistant foam discharge agent and a method for preparing the same, and belongs to the technical field of oil and gas field development.The salt-resistant and high-temperature-resistant foam discharge agent comprises, by weight, 0.2-0.5% of anionic-nonionic surfactant composite systems, 0.02-0.08% of microbial fermentation liquor andthe balance water. The microbial fermentation liquor is glycolipid producing biological surfactant or lipopeptide producing biological surfactant microbial strain fermentation liquor. The salt-resistant and high-temperature-resistant foam discharge agent and the method have the advantages that the salt-resistant and high-temperature-resistant foam discharge agent has salt-resistant and high-temperature-resistant foaming, foam stabilizing and liquid carrying ability and is excellent in condensate oil resistance and methanol tolerance, and accordingly the salt-resistant and high-temperature-resistant foam discharge agent and the method are favorable for environmental protection and sustainable development of oil and gas fields.

The present invention is directed to the use of alkylalkoxysulfonates for the production of foams, which are stable at high temperatures, e.g. up to about 250° C. Furthermore, the invention relates to a method for producing of high temperature stable foams by using a foamable aqueous composition comprising at least one linear alkylalkoxysulfonate.

The invention discloses an industrial solid waste autoclaved aerated concrete block and a preparation method thereof. The concrete block uses fly ash, carbide slag, red mud, lime, desulfurized gypsumand cement as main raw materials and aluminum powder, sodium hydroxide, water glass and the dispersing agent silica fume as additives; the coal ash reacts with components in the carbide slag to generate ettringite, so the strength of the concrete block can be enhanced; a large amount of aluminum oxide contained in the red mud can a replace part of lime and undergo a hydration reaction with the cement, and the aluminum oxide in the red mud can react with calcium hydroxide in the carbide slag, so the strength of the block is enhanced; the coal ash, the carbide slag and the red mud react with oneanother to generate hydrated calcium silicate and hydrated calcium aluminate, so the structural compactness of the block can be improved; and the additives can enhance the foaming stability of the aluminum powder and improve the early strength of the block under an alkaline condition. The method is green and environment-friendly, and the waste of non-renewable resources is effectively reduced.

The preparation and application of active foam protein for beer belongs to the field of beer foam stabilizer technology. Active foam protein with excellent solubility in beer environment is prepared with lacto albumin, soybean protein isolate, wheat mucedin and rice protein as material and through proper enzyme modification, ultrafiltering, anionic exchange column treatment and other steps. The present invention has active foam protein extracting process, high effect and low production cost, and the produced active foam protein can raise the foam stability of beer.

The invention belongs to the technical field of oil-gas field gas extraction production and discloses a novel floatable solid foam scrubbing rod. The novel floatable solid foam scrubbing rod comprises, by mass, 40-60 parts of a foaming agent, 10-20 parts of a foam stabilizer, 10 parts of a filler, 5 parts of a solubilizer, 3 parts of a fluidizer and 2 parts of a lubrication release agent. The foaming agent adopts one or more of dodecyl oxethyl sulphobetaine, dodecyl hydroxypropyl sulphobetaine and dodecyl sulfopropyl betaine; the foam stabilizer adopts one or two of coconut oil monoethanolamide and dodecyl polyglucoside; the filler adopts thiourea; the solubilizer adopts water soluble solid salt; the fluidizer adopts polyvinyl alcohol; and the lubrication release agent adopts one or two of polyethylene glycol 6000 and sodium benzoate. The foam scrubbing rod is small than or equal to shaft liquid loading in density and can float on the shaft liquid loading, the influence of liquid loading on foaming is reduced, foam scrubbing performance is further improved, the foaming quantity is increased, and the liquid drainage effect is improved.