43results about How to "Easy to break glue" patented technology

The invention relates to a rubber crusher and a rubber crushing method. The rubber crusher comprises a rack, a rubber crushing chamber supported by the rack, a discharge hopper positioned at the bottom of the rubber crushing chamber, and a roller device and a rubber cutter group which are arranged in the rubber crushing chamber, wherein the roller device is arranged at the top of the rubber crushing chamber, and comprises two rollers which are matched with each other; the rubber cutter group is arranged on the middle lower part of the rubber crushing chamber, and comprises a moving cutter and a fixed cutter which are matched with each other. The rubber crusher and the rubber crushing method have the beneficial effects that rubber blocks can be primarily rolled to form slices in advance, the slices are cut, and a separant is simultaneously sprayed to prevent the crushed rubber from being adhered; the advantages of an open mill and a rubber crusher are integrated, and the good rubber crushing effect and the high rubber crushing efficiency are ensured.

The invention relates to a high temperature resistant cleansing emulsion or microemulsion fracturing fluid and a preparation method thereof. The emulsion fracturing fluid is composed of a continuous oil phase, a polymer (I)-containing dispersed water phase and an emulsifier. The preparation method of the emulsion fracturing fluid includes: preparing a mixed solution of the oil phase and the emulsifier, preparing a four-monomer containing water phase, conducting a polymerization reaction in the presence of an initiating agent, and other steps. The product provided in the invention has low apparent viscosity, and can dissolve rapidly. When the emulsion dissolves into gel, the emulsifier can have a synergistic effect with an association polymer, thus further improving and maintaining the viscosity, and helping to prevent leak-off and help flowback. An oxidation gel breaking way is employed for gel breaking, the gel can be completely broken, and the gel breaking solution has low viscosity and contains no residue. The emulsion fracturing fluid is easy to undergo flowback, and has low damage to the stratum.

The invention relates to a method for preparing a high temperature retarding-type organic boron zirconium cross linking agent, which comprises the following steps of: adding organic zirconium salt into a three-neck flask filled with a mixed solvent of water and glycerol; stirring to ensure the organic zirconium salt to be totally dissolved; then adding a boron compound; performing a reaction for 30 to 60 minutes at a temperature of 60 DEG C; adding polyatomic alcohol, triethanolamine and EDTA-2Na (Ethylene Diamine Tetraacetic Acid-2Na); heating to a temperature of 80 DEG C and performing a reaction for 4 to 5 hours; and regulating the pH to the range of 7 to 9 by aqueous solution of NaOH with the concentration of 20 percent to obtain the boron zirconium cross linking agent. The cross linking agent prepared by the method disclosed by the invention has the characteristics of small using amount, controllable retarding cross-linking time, high temperature resistance, easiness for gel breaking, low damage and low fraction resistance.

The invention discloses fracturing fluid and a preparation method thereof. The fracturing fluid is formed by mixing base fluid and crosslinked fluid according to the crosslinking ratio of 100 to 5; the base fluid consists of the following compositions according to mass percentage: 03 to 0.5 percent of hydroxypropyl guanidine gum HPG-1, 0.4 to 0.5 percent of a temperature stabilizer for the fracturing fluid, 0.05 to 0.15 percent of a low temperature evocating agent for the fracturing fluid, 0.2 to 0.3 percent of a cleanup additive and the balance being sewage water from a crude oil layer; and the crosslinked fluid consists of the following compositions according to mass percentage: 0.5 to 1.5 percent of borax, 0.5 to 1.5 percent of ammonium persulfate and the balance being clear water. The method for preparing the fracturing fluid comprises the following steps: the prepared base fluid and the prepared fracturing fluid are respectively placed for 100 to 120 minutes and are mixed according to the crosslinking rate of 100 to 5 to form the fracturing fluid. The method adopts the sewage water for matching the fracturing fluid, saves cost, has small pollution to the environment and improves the wave and volume of a water-driven reservoir and the oil-sweeping efficiency.

The invention discloses an oil-based liquid-state fracturing fluid thickening agent, and preparation method thereof. Density of the oil-based liquid-state fracturing fluid thickening agent ranges from 0.9 to 1.2g / cm<3>; gelling time is 20s or less; and viscosity of 1.2% of the oil-based liquid-state fracturing fluid thickening agent after dissolving is 30mPa.s or more. The invention also discloses a preparation method of the oil-based liquid-state fracturing fluid thickening agent.

The invention relates to instant modified cellulose cross-linked clean fracturing fluid. The instant modified cellulose cross-linked clean fracturing fluid consists of the following components in parts by weight: 0.2-0.6 part of FAG-500 type modified cellulose, 0.1-0.5 part of FAZ-1 type tackifying initiator, 0.3-0.7 part of DL-16 type discharge aiding agent, 0.5-1.2 parts of FAJ-305 type cross-linking regulator, 0.2-0.7 part of FAC-201 type polar chelate type organic zirconium cross-linking agent, 0.002-0.07 part of NBA-102 type encapsulated gel breaker and 100 parts of water. The invention further provides a preparation method of the instant modified cellulose cross-linked clean fracturing fluid. The instant modified cellulose cross-linked clean fracturing fluid provided by the invention has performance better than that of a normal fracturing fluid system, has the advantages of being instant, temperature-resistant, shearing-resistant, easy in glue breaking, free of residue, and environment-friendly, can be used for the low-permeability oil gas filed, particularly in fracture mining of an easily-damaged storage layer.

The invention provides a quaternary ammonium salt type Gemini surface active agent and preparation, a product and application thereof. The surface active agent is shown as the formula (I), and please see the formula (I) in the description, wherein R1 is a saturated or unsaturated alkyl group with the main chain carbon atom number being 16-26, or a saturated or unsaturated alkyl group with the main chain carbon atom number being 16-26 and containing an amide group; R2 is methyl or ethyl or ethoxyl; R3 is selected from one of ethylidene; X is chlorine or bromine. According to the synthesized Gemini surface active agent, the highest temperature resisted by the surface active agent can reach 160 DEG C, and the temperature resistance is better than that of an existing conventional dimeric surface active agent.

The invention provides a strong sand-carrying fluid thickening agent which has a reversible crosslinking structure and is applied to water-base fracturing. The thickening agent has the advantages of one-high and two-low functional viscosity, easiness in breaking gel and returning, high salt resistance, high temperature resistance, low damage, no residue and the like. The invention also aims to provide a method for producing the thickening agent. The thickening agent is made by copolymerizing acrylamide (AM), sodium acrylate (NaAA) and allyl dodecyl dimethyl ammonium chloride (C(12-19)DMAAC) serving as a functional monomer, wherein the dodecyl-nonadecyl dially dimethyl ammonium serving as the functional monomer can be allyl dodecyl dimethyl ammonium chloride, tetradecyl dimethyl allyl ammonium chloride, hexadecyl dimethyl allyl ammonium chloride, octadecyl dimethyl allyl ammonium chloride or nonadecyl dimethyl allyl ammonium chloride.

The invention relates to the field of fracturing fluid technology and provides fracturing fluid of crosslinking association polymer and a production method thereof. The fracturing fluid of crosslinking association polymer is prepared from, by weight, 0.3 part - 0.6 part of association polymer thickening agent, 0.5 - 2 parts of crosslinking agent, 0.2 - 1 part of cleanup additive, 0.05 - 0.5 part of breaking agent, 0.1 - 1 part of clay stabilizer, 94.9 - 98.85 parts of water. According to the fracturing fluid of crosslinking association polymer, non-metallic crosslinking agent is used to crosslink association polymer molecules under neutral conditions to form clean fracturing fluid of crosslinking association polymer with moderate viscosity, low friction, no residue, imputrescibility, and easy breaking. The fracturing fluid of crosslinking association polymer not only is suitable for the mixture and dispersion of proppant, but also ensures the carrying effect of the proppant.

The invention belongs to the technical field of fracturing fluids for fracturing stimulation in the process of oil field development, and in particular relates to a peptidomimetic type recyclable cleaning fracturing fluid, which is prepared from the following components by mass percent: 1% to 4% of thickening agent, 0.5% to 2% of potassium chloride, 0.1% to 1.5% of conditioning agent, and the balance of water. The problems that the existing fracturing fluid has large oil-water interfacial tension, the end back flow fluid cannot be effectively used, and a great threat is posed to the environment are solved, the peptidomimetic type recyclable cleaning fracturing fluid has the advantage of reducing the fracturing construction cost, and can be recycled and reused, and the end sewage can be used for profile modification and flooding; the peptidomimetic type recyclable cleaning fracturing fluid has the characteristics of no residue, easiness in gel breaking, good compatibility, low frictiondrag, low damage, and low interfacial tension, and achieves continuous mixing and sand fracturing construction; after the completion of fracturing construction, the back flow fluid can be reused for fracturing fluid preparation, and the end sewage can be used for profile modification and flooding, thereby ensuring green production and sustainable development of the oil field.

The invention discloses a novel oil-based fracturing fluid. The novel oil-based fracturing fluid is prepared from raw material components in percentage by mass as follows: 4 %-7 % of nano-silica and the balance of an oil-soluble base solution. The oil-based fracturing fluid contains simple components, and various requirements of the oil-based fracturing fluid are met; a preparation method is simple, convenient and easy to implement, and gel breaking is simple, so that the purposes of simplifying the construction process and reducing the cost are achieved.

The invention discloses low-damage viscous acid. Based on the total weight of viscous acid liquid, the low-damage viscous acid is prepared from the following components in percentage by mass: 2-10% ofan acid liquid thickener, 1-4% of an acidizing corrosion inhibitor, 1-3% of an iron ion stabilizer, 10-28% of acid and the balance of water. A viscoelastic surfactant serves as the thickener to be used in acidizing, thus the reaction rate of acid rock can be effectively decreased, acid wormholes with good flow conductivity are generated, and deep acidification is achieved; and compared with polymer-type viscous acid, a surfactant-type viscous acid system has the advantages that raw materials are easy to obtain, preparation is easy, gel breaking is easy, damage to a formation is small, no crosslinking agent is added, and flowback is easy.

The invention discloses a high-salt-resistant viscoelastic surfactant cleaning fracturing fluid and a preparation method thereof. The fracturing fluid contains a cationic surface active agent, and thestructural formula of the cationic surface active agent is shown as the following formula. In the formula, R<1>' is selected from saturated alkyls with a carbon number n meeting a relationship of 16<=n<=24, unsaturated alkyls with a carbon number n meeting a relationship of 16<=n<=24, and a compound as shown in the following formula, wherein R<1> is selected from saturated alkyls with a carbon number n meeting a relationship of 16<=n<=24, and unsaturated alkyls with a carbon number n meeting a relationship of 16<=n<=24; and R<2> is selected from saturated alkyls with a carbon number C meetinga relationship of 3<=C<=7, unsaturated alkyls with a carbon number C meeting a relationship of 3<=C<=7, and short-chain alkylbenzene (C<=5). The cationic surfactant has good resistance to inorganic salts, and the principle is that the R<2> substituent groups block mutual proximity between polar head groups of the cationic surface active agent under a high-mineralization-degree condition, and thenprecipitation of the cationic surface active agent is avoided, so that the micelle continues keeping a dense three-dimensional network structure, and tackifying performance is improved.

The invention discloses fluid gel for generating seal valve plugging air layers by virtue of formation temperature. The fluid gel is composed of the following ingredients in parts by weight: 10-30 parts of gel crosslinking system and 1 part of gel initiator, wherein the gel crosslinking system is composed of water, an initiator monomer and a crosslinking monomer; and counted by the total mass percentage of the fluid gel, the initiator monomer accounts for 2-15%, the crosslinking monomer accounts for 0.1-5%, the gel initiator accounts for 0.1-2%, and the balance is water. The fluid gel disclosed by the invention is simple in formula, low in cost and high in pressure resistance.

The invention provides a clean and environment-friendly type compound thickening agent for fracturing fluid and a preparation method. The compound thickening agent is prepared from amido hydroxyethylpolyacrylamide, vegetable gelatin, xanthan gum, fungus cellulose enzyme, ethylene diamine tetraacetic acid disodium and sodium sulfate. The clean and environment-friendly type compound thickening agent for the fracturing fluid prepared in the invention has relatively strong thickening, temperature-resistant and anti-shear ability, is good in suspended sand-carrying ability and friction-reducing performance, easy for gel breaking and flowback, high in fracturing success rate and easier to degrade after flowing back to the ground, and does not cause pollution to the environment; meanwhile, the compound thickening agent is fewer in system ingredients and configuration links and easy for controlling quality, and can be compounded when needing to be used, the prepared compound thickening agentfor the fracturing fluid is stable in performance, can maintain a liquid state with a certain viscosity for a long time, and does not generate stratification or sediment; therefore, the application fields of the compound thickening agent are expanded, and the compound thickening agent has a good industrialized application prospect and practical application value.

The invention relates to a method for preparing a high temperature retarding-type organic boron zirconium cross linking agent, which comprises the following steps of: adding organic zirconium salt into a three-neck flask filled with a mixed solvent of water and glycerol; stirring to ensure the organic zirconium salt to be totally dissolved; then adding a boron compound; performing a reaction for 30 to 60 minutes at a temperature of 60 DEG C; adding polyatomic alcohol, triethanolamine and EDTA-2Na (Ethylene Diamine Tetraacetic Acid-2Na); heating to a temperature of 80 DEG C and performing a reaction for 4 to 5 hours; and regulating the pH to the range of 7 to 9 by aqueous solution of NaOH with the concentration of 20 percent to obtain the boron zirconium cross linking agent. The cross linking agent prepared by the method disclosed by the invention has the characteristics of small using amount, controllable retarding cross-linking time, high temperature resistance, easiness for gel breaking, low damage and low fraction resistance.

The invention discloses a retractable hot runner system. The system comprises a hot nozzle main body, a hot runner plate, a main nozzle and a driving device which is connected with the hot nozzle main body, wherein the hot nozzle main body is fixedly connected with the driving device, a hot runner hole on the hot nozzle main body is communicated with one end of a hole on the hot runner plate and the other end of the hole is communicated with a through hole on the main nozzle; the hot nozzle main body is provided with a first heating ring, a hot nozzle point and a hot nozzle gate bush and the hot nozzle gate bush is matched and fixed with the hot nozzle point and the hot nozzle main body; the hot runner plate is provided with a heating pipe and a support ring is arranged between the hot runner plate and a padding plate; and a second heating ring is wound outside the main nozzle. Compared with the prior art, the retractable hot runner system has the advantages that: the gate bush is only required to be matched with a die in position, so the die is simpler and the assembly and use of the whole hot runner system are not affected even if the processing precision on a die cavity is a little inaccurate; and meanwhile, the periphery of the gate bush contacts the die cavity exclusively, so thermal loss can be reduced.

The invention belongs to a supramolecular polymer thickening agent and a preparation method thereof. The supramolecular polymer thickening agent is prepared from the following raw materials in parts by weight: 3.3 parts of acrylamide, 3.3 parts of vinyl pyrrolidone, 1.4 parts of functional framework monomer, 12 parts of deionized water, 0.5-1 part of dispersing agent, 0.8-1 part of hydrophobic monomer, 20 parts of nitrogen and 0.05-0.1 part of initiator, wherein the hydrophobic monomer is any one of vinyl acetate, methyl acrylate and methyl methacrylate; the functional framework monomer can be polyethyleneimine or polyaspartic acid; the dispersing agent can be polyethylene glycol or polyacrylamide; and the initiator can be azodiisobutyronitrile or benzoyl peroxide. The supramolecular polymer thickening agent has the advantages of salt resistance, shear resistance and good temperature resistance performance.

The invention provides a quaternary ammonium salt type Gemini surface active agent and preparation, a product and application thereof. The surface active agent is shown as the formula (I), and please see the formula (I) in the description, wherein R1 is a saturated or unsaturated alkyl group with the main chain carbon atom number being 16-26, or a saturated or unsaturated alkyl group with the main chain carbon atom number being 16-26 and containing an amide group; R2 is methyl or ethyl or ethoxyl; R3 is selected from one of ethylidene; X is chlorine or bromine. According to the synthesized Gemini surface active agent, the highest temperature resisted by the surface active agent can reach 160 DEG C, and the temperature resistance is better than that of an existing conventional dimeric surface active agent.

The invention provides an adjustable viscoelastic supramolecular clean fracturing fluid system and a preparation method thereof. The clean fracturing fluid system is composed of the following components in mass percentage: 1.0-6.0% cationic surfactant; 0.2-6.0% organic acid 1.0%; Inorganic salt 0.1-2.0%; Amphiphilic polymer 0.1%-1.0%; Water 98.6-90.0%. When preparing, first prepare super long-chain fatty amide cationic surfactant, dissolve inorganic salt in water, and then Then add amphiphilic polymer, organic acid and cationic surfactant in sequence, and after fully stirring, a supramolecular cleaning fracturing fluid can be obtained; this supramolecular cleaning fracturing fluid has the property of adjustable viscosity, through Join to achieve different performance requirements. At the same time, it can effectively fracture the formation, with simple configuration, small dosing amount, strong sand-carrying property, and good temperature resistance, which avoids the problems of large dosing amount and poor temperature resistance in the existing conventional clean fracturing fluid system, and improves the pressure. Improve fracturing efficiency, reduce fracturing costs, and expand applicable formation conditions.

The invention provides a surfactant fracturing fluid suitable for ocean high-temperature oil and gas reservoir fracturing. The surfactant fracturing fluid consists of the following raw materials in percentage by weight: 1-3% of micelle regulator, 1-4% of micelle accelerant, 1-2% of organic gel breaker, 5-8% of surfactant and the balance of seawater. According to the surfactant fracturing fluid suitable for ocean high-temperature oil and gas reservoir fracturing provided by the invention, the thickening property is realized through specially modified surfactant acrylamide alkyl polyglucoside and seawater. When the surfactant fracturing fluid is dissolved in saline water, the surfactant molecules of a specific structure can quickly form a micelle similar to a macromolecular coil structure under the effects of the micelle regulator and the micelle accelerant; the mutually-wound net-structure micelle is completely different from a conventional spherical or rod-like micelle structure and has certain distortion resistance; and thus, the fracturing fluid system has higher viscosity and strength, and the fluid has better temperature resistance and sand carrying capacity.

The invention belongs to the technical field of oilfield chemistry and fracturing stimulation, and provides an elastic sand-carrying fracturing fluid, a thickener used in the fracturing fluid and a preparation method thereof. The raw materials for the preparation of the thickener include the following parts by weight Number of components: 0.5-1.5 parts of acrylamide; 1-5 parts of octadecyltrimethylammonium bromide; 0.05-0.15 parts of potassium persulfate; 0.005-0.015 parts of alkali; diethylene glycol distearate 1-5 parts; 0.5-1.5 parts of tripolyglycerol diisostearate; 0.2-0.8 parts of sodium tetradecyl carboxylate; 0.2-1.5 parts of fatty acid amidopropyl dimethylamine; 0.2-0.8 parts of tertiary amino alcohol The elastic sand-carrying fracturing fluid is composed of the following components in weight percentage: thickener 0.20%-0.55%; crosslinking agent 0.20%-0.55%; drainage aid 0.1%-0.5%; anti-swelling agent 0.1% -0.5%; the balance is water; the preparation method includes the steps of preparing an acrylamide solution, an intermediate solution, a product, and a thickener. The elastic sand-carrying fracturing fluid of the present invention has simple liquid preparation, obvious construction effect and good rheological performance; after the thickener and cross-linking agent are used in combination, the viscosity is low and the sand-carrying ability is strong.

The invention provides a method for improving sand-carrying capacity of fracturing fluid and fiber-containing fracturing fluid. The method for improving the sand-carrying capacity of the fracturing fluid comprises the step of adding fibers into the fracturing fluid, wherein the addition amount of the fibers is 0.3-0.8 weight part based on 100 weight parts of the fracturing fluid; the fibers have the tensile strength of 20-300MPa, the true density of 0.98-1.33g / cm<3>, the length of 3-15mm and the diameter of 25-150 microns; and the fibers refer to soluble fibers. The fiber-containing fracturing fluid provided by the invention refers to fracturing fluid prepared by the method. According to the method for improving the sand-carrying capacity of the fracturing fluid, the sand-carrying capacity can be improved, the amount of a thickening agent is reduced, the viscosity of base solution is reduced, and the damage and cost of the fracturing fluid can be further reduced. Moreover, residues of the fracturing fluid can be reduced, and gel breaking is easily realized by virtue of the fracturing fluid.

The invention discloses a preparation method of a thickening agent for a fracturing fluid with the temperature of 200 DEG C or above and the fracturing fluid adopting the thickening agent. The preparation method comprises steps of solution preparation, polymerization and rubber block post-treatment. The fracturing fluid is characterized by being prepared by fully stirring and mixing, by mass, 1% of the thickening agent, 0.5% of a cross-linking agent that is diethylenetriamine, and a pH regulator that is sodium bicarbonate to adjust the pH to 6, with the balance being water for 10 minutes. Beneficial effects are that the thickening agent prepared by the method has the characteristics of fine particles, high-temperature resistance, salt resistance and the like; the fracturing fluid preparedfrom the thickening agent prepared by the method disclosed by the invention has the characteristics of good temperature resistance, shearing resistance, low friction resistance and the like.

The invention provides high-temperature-resistant recyclable clean fracturing fluid for gas wells. The high-temperature-resistant recyclable clean fracturing fluid comprises, by weight, 1%-4% of thickening agents, 0.5%-5% of potassium chloride and the balance water. The high-temperature-resistant recyclable clean fracturing fluid for the gas wells has the advantages that the fracturing construction cost can be reduced, the high-temperature-resistant recyclable clean fracturing fluid can be recycled and is free of residues, good in compatibility and low in friction resistance and harm, gel breaking can be easily implemented, and continuous mixed sand fracturing construction can be implemented by the aid of the high-temperature-resistant recyclable clean fracturing fluid for the gas wells; a certain quantity of defoaming agents can be added into flowback fluid after fracturing construction is completed, so that the high-temperature-resistant recyclable clean fracturing fluid can be used for preparing fracturing fluid, and environment-friendly production and sustainable development of the gas wells can be guaranteed.

The invention relates to the field of oil fields, in particular to a heating electrolysis sewage treatment pool and a sewage treatment method. It includes the pool body, and also includes an exhaust gas discharge structure leading to the interior of the pool body. The exhaust gas discharge structure is used to heat and / or chemically break the sewage in the pool body. Sewage gel breaking in the engine cooling pool body, the chemical gel breaking refers to the chemical components in the exhaust gas and the substances in the sewage combined to break the gel, and the sewage is electrolyzed at the same time. This scheme can not only realize the treatment of the tail gas, but also make full use of the heat in the tail gas to heat the sewage to break the glue. The chemical components can react with the components in the sewage to break the gel, which not only avoids the pollution of the exhaust gas to the atmosphere, but also makes it convenient to break the gel.

The invention discloses a high-salt-resistant viscoelastic surfactant cleaning fracturing fluid and a preparation method thereof. The fracturing fluid contains a cationic surfactant, and the structural formula of the cationic surfactant is: wherein, R 1 'Selected from saturated alkyl groups with 16≤n≤24 carbons, unsaturated alkyl groups with 16≤n≤24 carbons, R 1 Selected from saturated alkyl groups with 16≤n≤24 carbons and unsaturated alkyl groups with 16≤n≤24 carbons, R 2 It is selected from saturated alkyl groups with 3≤C≤7 carbons, unsaturated alkyl groups with 3≤C≤7 carbon atoms, and short-chain (C≤5) alkylbenzenes. The cationic surfactant has good resistance to inorganic salts, the principle is that R 2 The substituents prevent the polar head groups of cationic surfactants from approaching each other under the condition of high salinity, avoid the precipitation of cationic surfactants, make the micelles continue to maintain a dense three-dimensional network structure, and improve the viscosity-increasing performance.

A low-harm thickened acid, based on the total weight of the thickened acid solution, the mass fraction of each component is: acid thickener 2‑10%, acidification corrosion inhibitor 1‑4%, iron ion stabilizer 1-3%, acid 10-28%, and the balance is water; the present invention uses viscoelastic surfactant as a thickening agent in acidification, which can effectively delay the reaction rate of acid rock and produce acid erosion with good flow conductivity Worm holes to achieve deep acidification; compared with polymer thickened acid, surfactant thickened acid system has the advantages of easy to obtain raw materials, simple preparation, easy to break the gel, less damage to the formation, no cross-linking agent added, easy to return Advantages of the row.