329results about How to "Good viscosity reduction effect" patented technology

The invention discloses a preparation method of a viscosity-reduction type polycarboxylate water reducer, which belongs to the field of concrete admixtures. The water reducer is prepared from random polyoxyalkyl ether unsaturated acid ester, unsaturated modified polyoxyethylene ether, unsaturated acid alkyl ester, and (methyl) acrylic acid, by means of copolymerization with an aqueous solution and then adding alkali for neutralization, under the presence of an initiator and a molecular weight regulator. By a certain quantity of hydrophobic units and hydrophobic groups which are introduced into and controlled in carboxylic acid copolymer molecule structures, the viscosity of a cement-based material is reduced under the presence of the water reducer. The water reducer prepared by the method has the advantages of high viscosity reducing effect, high dispersibility, good adaptability to cement, and the like; the water reducer is especially applicable to preparation of high-strength concrete, self-compacting concrete, low-water-binder-ratio high-dosage mineral admixture concrete, and the like.

The invention discloses a concrete viscosity reducer and a preparation method thereof. The viscosity reducer is prepared from raw materials including 1,4-butanediol vinyl ether, unsaturated amide and unsaturated phosphate ester through polymerization. The production process of the prepared concrete viscosity reducer is simple, the concrete viscosity reducer has good adaptability with a polycarboxylate water reducer, the concrete viscosity reducer in the mass 0.01%-0.03% that of gel materials is mixed with concrete, the workability of the concrete can be remarkably improved, and the problems that the concrete viscosity is high and concrete is difficult to pump at a low water-gel ratio are effectively solved.

The invention relates to a preparation method of an aminated lignin drilling fluid treating agent, which comprises the steps of firstly dissolving industrial lignin in water, then dripping an acetic acid solution, regulating pH value, adding methanal serial materials under a stirring condition, then adding amine under the stirring condition, heating for backflow under the stirring condition to obtain the water solution of aminated lignin, finally drying the water solution of the aminated lignin by distillation and crashing to obtain brown granular solid aminated lignin which can be used as the drilling fluid treating agent. The obtained aminated lignin used as the drilling fluid treating agent can improve the fluid loss and viscosity reduction effects, has the advantage of small pollutionbecause the raw material is a natural non-toxic product which is easy to degrade and polluting metal ions are not introduced, and can be applied in the preparation field of the drilling fluid treating agent.

The invention discloses a viscosity-reduction type polycarboxylate water reducer and a preparation method thereof, and relates to the technical field of building materials. An A type water reducer and a B type water reducer are synthesized according to theoretical design, and the water reducer is formed by compounding the two water reducers, so that the water reducer is the viscosity-reduction type polycarboxylate water reducer which is small in mixing amount, obvious in viscosity-reduction effect, high in water-reducing rate and little in slump loss.

The invention relates to a polycarboxylate superplasticizer for reducing the viscosity of high-grade concrete and a preparation method thereof. The polycarboxylate superplasticizer is prepared by: adding an initiator into the monomer alkenyl terminated polyoxyethylene ether shown as formula (1), unsaturated acid and unsaturated ester, carrying out random copolymerization reaction through an aqueous solution at room temperature, then adding a viscosity reduction regulator to conduct molecular rearrangement, and employing an alkaline regulator to adjust the product to neutral. The invention also includes a preparation method of the polycarboxylate superplasticizer for reducing the viscosity of high-grade concrete. The polycarboxylate superplasticizer provided by the invention has high water-reducing rate, can achieve good viscosity reducing effect when applied in high-grade concrete, and has the advantages of good adaptability, low gas content, good retainability and good pumpability.

The invention relates to a viscosity reducer and a preparation method thereof. The preparation method for the transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer is characterized by comprising the following steps of: 1) adding fatty acid alkyl ester and dichloroethane into a container in a molar mass ratio of 1:2.0-3.0; 2) placing the container into an ice water bath, dripping chlorosulfonic acid in a molar mass ratio of the fatty acid alkyl ester to the chlorosulfonic acid of 1:1.3-2.0, performing sulfonation reaction, and performing ageing after the sulfonation is finished to obtain an intermediate product; and 3) adding a transition metal oxide into the intermediate product in a molar mass ratio of the fatty acid alkyl ester to the transition metal oxide of 1:0.17-0.25, performing complex reaction for 1 to 2 hours, standing and demixing after the reaction is finished, and removing the water of the upper layer, wherein the paste of the lower layer is the transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer. The viscosity reducer prepared by the method has good viscosity reducing effect at the temperature of 200 DEG C, and simultaneously has the characteristics of easily obtained raw materials and simple preparation process.

The invention discloses an oil-based drilling cutting treatment method. The oil-based drilling cutting treatment method comprises oil-based drilling cutting extraction, separation of an extract liquor, recycling of a switchable solvent, repeated separation and extraction, oil-based drilling cutting component analysis and the like. The method can be performed under a mild condition without high temperature, high pressure and other additional conditions, and changes of hydrophilic performance of the solvent can be intelligently controlled under the stimulus-response of CO2; the viscosity reduction effect on oil-based drilling cuttings is good, the separation capacity for mineral oil in the oil-based drilling cuttings is good, the recovery rate of oil can be up to 95% or higher, the ignition point of the switchable solvent CyNMe2 is high, the method does not have a biological accumulation effect, the recovery rate of the solvent can be up to 85% or higher, and the recovery efficiency can be further improved with methods such as infrared heating, addition of chemical agents and the like.

The invention relates to the technical field of concrete additives and particularly relates to a polycarboxylate superplasticizer with effects of mud resistance and viscosity reduction and a preparation method thereof. The polycarboxylate superplasticizer is prepared from the following raw material components: polyether macromonomer, unsaturated carboxylic acid, functional monomer, initiator and achain transfer agent, wherein the functional monomer is an olefin polymer compound containing ester functional groups. The polycarboxylate superplasticizer with effects of mud resistance and viscosity reduction can be used for ensuring the water-reducing rate, reducing adsorption of clay on polycarboxylate ions and improving the viscosity of concrete, achieves uniformity of high mud resistance and high water reducing dispersion, and has important practical application value and market prospect.

The invention relates to a viscosity reducer by emulsification for heavy oil. The viscosity reducer comprises the following components: a nonionic surfactant, an anionic oligomeric surfactant, alcohol and water; the alcohol is C1-C8 alcohol, the anionic oligomeric surfactant comprises a structure shown in the formula (I), wherein n is any integer from 1 to 6, R is alkyl, and M is at least one from Li+, Na+ and K+. The viscosity reducer by emulsification for heavy oil has the advantages of good viscosity reducing effects for heavy oil, good salt resistance, low usage concentration, and low cost; alkali is not needed during usage, and the viscosity reducer by emulsification for heavy oil is suitable for stratum which is sensitive to alkali.

The invention relates to an oil-soluble and water-soluble composite temperature-resistant and salt-resistant viscosity reducer for super heavy oil in the field of petroleum exploitation. The composite viscosity reducer contains oil-soluble viscosity reducer A and water-soluble viscosity reducer B, and mass ratio of the oil-soluble viscosity reducer A to water-soluble viscosity reducer B is 1:(4-9). The viscosity reducer provided by the invention has the following advantages: the viscosity reducer has temperature resistance (up to 140 DEG C), salt resistance (up to 22*10<4>mg/L), and combines the advantages of both oil-soluble viscosity reducers and water-soluble viscosity reducers; the viscosity reducing effect is obviously superior to the effect of single use of oil-soluble viscosity reducer and water-soluble viscosity reducer; the application range is wide; the viscosity of the oil phase can be reduce after demulsification; and demulsification is not affected and water quality is not influenced. The viscosity reducer provided by the invention can greatly saves consumption of thin oil and exploitation cost when being used for well casing viscosity reduction; and can effectively improve exploitation and delivery performance of heavy oil/super heavy crude oil and greatly increase well yield when being used for heavy oil viscosity reduction.

The invention discloses a photocureable silicon nitride ceramic paste and a preparation method thereof. According to the invention, stearic acid powder and a premixed solution are additionally used asraw materials on the basis of ceramic powder, wherein the premixed solution is composed of a plurality of substances. According to the invention, through addition of the stearic acid powder, the compatibility of the ceramic powder and subsequent resin can be improved, and the solid phase content of silicon nitride ceramic can be easily improved; through optimized selection of all substances in the premixed solution, resin with high refractive index can be introduced into a resin system to reduce the difference of refractive indexes of the ceramic powder and the resin, so the single-layer curing depth of a ceramic paste can be improved; in addition, rigid group containing epoxy resin, isobornyl methacrylate (IBOMA) and the like are added into the resin to reduce shrinkage generated in theprocess of curing; and through optimization of the varieties of all substances, the photocureable ceramic paste provided by the invention has the following advantages: the solid phase content and single-layer curing depth of the isobornyl methacrylate are improved, and the shrinkage amount of the paste photocured into ceramic is reduced.

The invention discloses high-solid low-viscosity hydroxy acrylic resin as well as a preparation method and application thereof. During preparation, a first part of solvent and mono-glycidyl ether are added into a reaction kettle, stirred and heated to 140-180 DEG C; a first part of initiator and a chain transfer agent are added into an acrylic monomer mixture, the obtained mixture is dropwise added into a reaction kettle within 3-6 h, and the temperature is kept for 0.5-1h after dropwise addition; the residual initiator and the residual solvent are mixed uniformly and added into the reaction kettle within 20-40 min, the temperature is kept for 1-2 h after the addition is completed, a hydroxyl oligomer is added, stirring is performed for 30-60 min, the temperature is lowered for material discharge, and the high-solid low-viscosity hydroxy acrylic resin is obtained. The resin solid accounts for 70% or higher, the viscosity is as low as 300mPa*s. The technology for preparing the hydroxy acrylic resin is simple, the cost is low, and a bi-component polyurethane coating film has excellent water resistance, acid and alkali resistance and mechanical properties.

The invention discloses a method for preparing a heavy oil viscosity reduction agent through a hydrophobic modification carbon nanometer pipe. The method belongs to the technical field of heavy oil viscosity reduction agent preparation and comprises the steps of using a coupling agent for carrying out surface treatment on the carbon nanometer pipe; then adopting methyl methacrylate, octadecyl acrylate and styrene as raw materials for preparing to obtain an encapsulated liquid; coating the surface of the carbon nanometer pipe with the encapsulated liquid, and drying to obtain the hydrophobic modification carbon nanometer pipe; finally mixing the hydrophobic modification carbon nanometer pipe, a surface active agent and solvent oil to obtain the heavy oil viscosity reduction agent. When the heavy oil viscosity reduction agent prepared through the hydrophobic modification carbon nanometer pipe is added into the heavy oil, a polar basal body can be introduced, so that hydrogen-bond interaction between colloid and asphaltene in the heavy oil can be reduced, the aims of reducing the heavy oil viscosity and improving the crude oil mobility can be achieved, the usable range is wide, a better viscosity reduction effect can be realized on different oil products, and a viscosity reduction effect is durable and effective.

The invention relates to a warm-mixing agent used for waste-rubber-powder-modified asphalt, and a preparation method thereof. According to the invention, through the compounding of the components such as an ethylene-structure-containing substance with a melting point within a range of 100-150 DEG C, an ester with a melting point within a range of 50-100 DEG C, monoamide with a melting point within a range of 50-100 DEG C, oleic acid, aromatic oil, and the like, the viscosity of waste-rubber-powder-modified asphalt is greatly reduced, such that warm-mixing requirements are achieved. Also, performances such as low-temperature ductility, high-temperature softening point, and the like of the modified asphalt are improved by a certain extent.

The invention relates to a terpolymer oil soluble viscosity reducer for thick oil exploration and transportation and a preparation method thereof. The terpolymer oil soluble viscosity reducer for thick oil exploration and transportation is characterized in that the viscosity reducer is prepared from methacrylate ester, N, N'- 2 (methacryloyloxyethyl) diamine, styrene, azobisisbutyronitrile and toluene, and the molar ratio of all the raw materials is as follows: methacrylate ester: N, N'- 2 (methacryloyloxyethyl) diamine: styrene is (4 to 5): (2 to 3): (2 to 4), the added amount of the azobisisbutyronitrile is 0.5 to 2 percent of the total mass of the methacrylate ester, the N, N'- 2 (methacryloyloxyethyl) diamine and the styrene, and toluene serves as the solvent; the methacrylate ester is prepared from acrylic acid, C16 to C22 higher alcohols, sulfoacid catalyst and phenolic inhibitor; and the N, N'- 2 (methacryloyloxyethyl) diamine is prepared from methyl acrylate and diamine. The oil soluble viscosity reducer has the advantages of good effect, strong universality, no pollution and relaxed use conditions, and can simultaneously meet the needs of thick oil exploration and transportation.

The invention relates to the technical field of wafer dicing adhesive glue, and particularly relates to an ultraviolet (UV) adhesive tape and a preparation method thereof. The UV adhesive tape comprises a PET (polyethylene terephthalate) released protective film, an UV (Ultraviolet) glue layer and a PVC (Polyvinyl Chloride) film which are sequentially stacked up and down; the UV glue layer is prepared from the following components in parts by mass: 50 to 100 parts of acrylic resin with a vitrified temperature of minus 20 to minus 30 DEG C, 0 to 5 parts of epoxy resin cross-linking agents, 0 to50 parts of carbon-carbon double-bond multi-element unsaturated resin and 0 to 10 parts of photoinitiator mixed liquid. According to the UV adhesive tape disclosed by the invention, the defect that aglue layer is too soft or too hard can be improved, adhesion and separation of glue residues formed in the back side of a wafer and an iron ring can be avoided, and the adhesion reduction effect of the adhesive tape also can be greatly improved so as to ensure that a picking rate is 100 percent; by utilizing polycondensation reaction on the epoxy resin cross-linking agents and the acrylic resin,glue materials are cross-linked in a net manner, and a hydroxyl functional group is produced, so that Van der Wals force between the hydroxyl functional group and a PVC film is greatly improved, and adhesive power and cohesion force are greatly enhanced; meanwhile, the UV adhesive tape has the characteristics of low cost, less pollution and the like.

The invention relates to a novel viscosity reducer for viscous oil, and the novel viscosity reducer is a chemical agent mainly used for viscosity reduction and cold production of viscous oil. The viscosity reducer disclosed by the invention has the advantages of convenience in construction, high viscosity reduction rate, low price and the like. Laboratory tests and field applications show that the viscosity reducer disclosed by the invention is applicable to conventional (borehole) viscosity reduction mining, oil layer viscosity reduction and the like of a viscous oil well and can be used for solving the problem of the oil layer blockage at an immediate vicinity of a wellbore caused by large viscosity of crude oil or micro-emulsion. In summary, the viscosity reducer is wide in applicable range and significant in effect and can adapt to the viscosity reduction of various viscous oil.

The invention relates to a circulating hot water heavy oil thermal recovery system for an ultra-deep well and a process thereof. In the well, a heat insulation pipe is arranged between a casing and an oil pipe for forming an internal annular space between the oil pipe and the heat insulation pipe and an external annular space between the heat insulation pipe and the casing, and the internal and the external annular spaces are communicated at the lower end of the heat insulation pipe; a packer is mounted between the deep-layer casing which is arranged below the heat insulation pipe and at the upper part of an oil layer and the oil pipe so as to block heavy oil from entering the annular space of an oil jacket; on the ground, a pipeline is used for connecting a heating device, a pump vehicle, a return water heat insulation tank and a water conveying pipe with the double annular spaces which are mutually communicated. The return water heat insulation tank is used for receiving return water from the external annular space, the water conveying pump is used for pumping the return water into the heating device for heating and sending the heated return water to the pump vehicle, the pump vehicle is used for pressurizing the heated return water, the pressurized hot water enters into the internal annular space from a well mouth, reaches the lower end of the heat insulation pipe and returns to the well mouth from the external annular space so as to form a heating water circulating passage, and the circulating water can continuously heat the heavy oil in the oil pipe, so that the heavy oil always keep the molten flowing state, thereby realizing smooth recovery of the heavy oil. The method and the production system have the advantages of simple structure, high powder, low operation cost and strong operability.

The invention relates to a high-temperature-resistant viscosity-reduction filtrate reducer for a drilling fluid and a preparation method of the filtrate reducer. The filtrate reducer comprises the raw materials of waste acrylon fibers, alkali, mineral acid, hydrogen peroxide, lignite, a sulfonating agent, formaldehyde, copperas and water, wherein the waste acrylon fibers and part of alkali are added in water for reaction at the temperature of 85-95 DEG C; the mineral acid and the hydrogen peroxide are added when the temperature is reduced to 80-85 DEG C, and then the temperature is increased to 85-95 DEG C for reaction for 1-3 h; the remained alkali, lignite, sulfonating agent and formaldehyde are added for reaction for 1-3 hours at the temperature of 85-95 DEG C; the temperature is reduced to 60-80 DEG C, and then ferrous sulfate is added for reaction for 10-30 min; and finally, the product is fetched for drying and smashing. The obtained filtrate reducer not only can reduce the drilling fluid viscosity, but also has a good de-filtration effect and is resistant to high temperature. The filtrate reducer takes the waste acrylon fibers and the lignite as main raw materials, is low in cost and simple in process.

The invention discloses an ultrasonic-electromagnetic combined action based viscosity-reducing and paraffin-control device for crude oil and a viscosity-reducing and paraffin-control method of the device, relates to the field of petroleum industry, and aims to solve the problems that the existing methods for reducing the viscosity of crude oil in the processes of being gathered and transported are poor in viscosity-reducing effect and large in energy consumption, and pollute the environment, and the like. According to the invention, a control system respectively sends a frequency signal with a frequency of 25 KHz to two ultrasonic transducers, so that the two ultrasonic transducers generate ultrasonic waves, the control system sends a pulse signal to an inductance coil, so that the inductance coil generates a magnetic field in an oil pipe, a high-frequency oscillation generated by an oscillating circuit is transferred to the two ultrasonic transducers, so that the two ultrasonic transducers and the oscillating circuit generate a high-frequency resonance, and the two ultrasonic transducers generate superposed ultrasonic waves in a middle pipe, so that the crystallization of paraffin molecules is prevented; and due to an induced magnetic field generated by the inductance coil, the liquidity of crude oil is enhanced under the action of the magnetic field, thereby achieving the viscosity reduction of the crude oil. The device and method disclosed by the invention are applied to the viscosity reduction of crude oil.

The invention discloses a preparation method of a viscosity reducer for a drilling fluid. The viscosity reducer is prepared from acrylic acid, maleic anhydride, 2-acrylamide-2-methylpropanesulfonic acid and sodium amino-tris(methylenesulphonate) as raw materials through aqueous solution polymerization and physical compounding, wherein the raw materials are in parts by weight as follows: 10-20 parts of acrylic acid, 15-25 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-15 parts of maleic anhydride and 60-120 parts of aminotri (methylenephosphonic acid) pentasodium salt. A low-molecular-weight polymer is obtained from monomers through polymerization under initiation of an initiator, viscosity of fresh water mud, salt water mud and calcium mud can be reduced effectively when a small quantity of the viscosity reducer is added to the drilling fluid, and the viscosity reducer further has certain fluid loss control property and is applicable to various types of water-based drilling fluid systems.