33results about How to "Long bubble time" patented technology

The invention discloses an oil-proof sustained-release solid foaming drainage agent used for gas wells, and a preparation method and applications thereof. The oil-proof sustained-release solid foaming drainage agent is mainly used for solving problems of conventional solid foaming drainage agents that high local concentration and waste are caused because of high dissolving speed, and preferable application is different to realize when gas well output water is high in gas condensate content, high in mineralization degree, and high in temperature. The dissolving time of the oil-proof sustained-release solid foaming drainage agent at 90 DEG C formation water condition is longer than 72h, and agent effect lasting time is long; the oil-proof sustained-release solid foaming drainage agent is capable of resisting gas condensate of 50% or higher, temperature of 120 DEG C or higher, and mineralization degree of 250000ppm; the foaming power is equal to or larger than 140mm; foam stabilizing time is long; and compatibility with agents such as methyl alcohol, corrosion inhibitors, and scale inhibitors is high. The preparation method is simple; no environment pollution is caused; no chemical reaction of products with gas and liquid ingredients is caused; equipment or pipeline corrosion is not caused; the prominent problems of gas wells are solved; and the oil-proof sustained-release solid foaming drainage agent is suitable for a plurality of water-producing gas wells.

The invention relates to a camellia saponin type oilfield foaming agent and a preparation method and application thereof. The oilfield foaming agent comprises the following components in part by mass: 100 parts of camellia saponin based on the solid content, 1 to 10 parts of cocoanut oil diethanol amide, 1 to 10 parts of amine ether alkyl glucoside, 1 to 10 parts of dodecyl betaine, and 0.5 to 2 parts of lauryl dimethy amine oxide, wherein the camellia saponin is natural plant source camellia saponin or structure-modified camellia saponin. The camellia saponin type oilfield foaming agent is used as an oilfield foaming agent in oil recovery, has the characteristics of acid, alkali and salt resistance, temperature resistance, high foam expansion ratio, long stable foam time and the like, can meet oil extraction requirements under different geological and weather conditions, cannot pollute an oilfield soil layer employing the foaming agent, can prevent a chemically synthesized foaming agent from harming the oilfield stratum, and has remarkable environmental protection characteristic.

The invention discloses an anti-collapse and anti-leakage drilling washing fluid used during drilling and a field production method thereof, belongs to the technical field of geological core drilling technology, and aims to solve the problem that drilling washing fluid is poor in wall protecting effect under the stratum conditions of strong breaking and continuous leakage. The drilling washing fluid is characterized in that 30-50kg of bentonite, 2-4kg of soda ash, 2-5kg of tackifier, 20-50kg of fluid loss agent, 5-15kg of flow pattern regulator, 30-80kg of bridging agent, 20-50kg of blocking agent, 10-30kg of inhibitor and 1-3L of foaming agent are added to each cubic meter of water. The anti-collapse and anti-leakage drilling washing fluid has the advantages that the drilling washing fluid is good in collapse preventing effect, fast in leakage blocking, high in leakage blocking strength, wide in adaptive crack width range, and widely applicable to the drilling of water-sensitive and loose and broken stratums, low-pressure leakage layers and fracture hole developed stratums.

The invention discloses structural modification type cameclia oleifera saponin, which is prepared by the following method: stirring cameclia oleifera saponin and normal butanol at room temperature and carrying out an esterification reaction under the action of 4-dmethylamino pyridine as a catalyst and N-dicyclohexylcarbodiimide as a dehydrating agent; tracking and detecting to complete reaction; adding fatty alcohol and stirring at room temperature and reacting for 2-5 hours; heating to 70-100DEG C; controlling the reaction pressure to be 0.005-0.015MPa; stirring and carrying out an ester exchange reaction, tracking and detecting to complete reaction; filtering reaction liquid; washing filtrate B; drying and then filtering an organic layer to obtain filtrate C; carrying out reduced pressure distillation to recover the normal butanol; and obtaining a remainder which is the structural modification type cameclia oleifera saponin. The structural modification type cameclia oleifera saponinhas the characteristics of high foaming multiplying power, long foam stabilizing time and the like and can be used as a matrix raw material of an oil filed foaming agent; and the oil filed foaming agent synthesized by matching and optimizing has the performances of resisting acid, alkali, temperature and salt and capability of meeting the oil extracting requirements under different conditions.

The invention relates to an ultra-light building material which consists of driers, extravasation materials, foaming agents and water and is characterized in that the driers consist of cement which is 10 to 15 percent of the total weight of the driers and semi-hydrated gypsum which is 85 to 90 percent of the total weight of the driers; the extravasation materials consist of an efficient water reducing agent which is 1 to 3 thousandth of the total weight of the driers, a retarder for plaster which is 2 to 4 thousandth of the total weight of the driers, polyvinyl propyl ethernamine which is 0.5to 1.0 thousandth of the total weight of the driers and anti-cracking fiber which is 1.0 to 1.5 thousandth of the total weight of the driers; the foaming agents is 5 to 6 percent of the total weight of the driers; the weight ratio of the driers to water is 1:0.6 to 1:0.65. The invention also discloses a manufacturing method of the material. The building material is characterized by good mixture workability, easy foam adding and stabilizing and high foaming efficiency.

The invention discloses a thermal damage isolation material for deep-heat shafts and a preparation method thereof, and belongs to the fields of heat damage control of mine surrounding rocks and building thermal environment. It includes the following components in parts by weight, modified fly ash 0-300, cement 100-800, medium coarse sand 500-900, water 300-600, organic fiber 10-15, early strength agent 5-15, compound With foaming agent 3-15, additive 5-10. The present invention selects the modified fly ash that has been physically activated and chemically excited, so that more active pozzolans in the fly ash can participate in the hydration reaction, effectively saving the amount of high-grade cement, and improving the workability of the mixture. Reduce heat of hydration and thermal expansion, improve compression resistance and impermeability; the present invention uses organic fibers and additives to enhance flexural strength and deformability, and can effectively inhibit shrinkage and cracking; the thermal conductivity is determined to be 0.08-0.18 W / (m·K), has excellent thermal damage barrier ability; the invention has simple formula, long foam stabilization time and low thermal conductivity, and is suitable for thermal insulation of underground tunnels, external walls and non-load-bearing walls.

The invention provides a colloidal foam fire extinguishing agent suitable for high-level fire sources and concealed fire sources in coal mines, and belongs to the technical field of fire extinguishing agents. The colloidal foam fire extinguishing agent suitable for high-level fire sources and concealed fire sources in coal mines provided by the present invention includes the following components in mass percentages: 1-4% of refractory soil, 20-30% of foaming agent, 3-7% of cooked rubber powder, Fly ash 1-10%, the rest water. The colloidal foam fire extinguishing agent provided by the present invention has a foam stabilization time of more than 100 hours, which can effectively avoid the phenomenon of "flowing along the channel" and the phenomenon of slurry deterioration on the working surface; Cracks accumulate and cover a wide area, which can effectively extinguish fire sources at high positions and hidden places with cracks. It is suitable for controlling fire sources in complex underground coal mines. When foam encounters high-temperature coal bodies in application, it can absorb the heat of coal bodies, and aggregates are adsorbed on them. In the coal body or cracks, a layer of water colloid is formed to absorb heat, cool down and isolate oxygen.

The invention provides a camellia saponin concrete air-entraining agent and a preparation method thereof. The air-entraining agent is characterized in that it contains Camellia oleifera saponin; the preparation method is characterized in that: taking Camellia oleifera as a raw material, adopting a hydrophilic solvent aqueous solution, extracting and filtering under conditions above normal temperature; after the filtrate is separated by membrane under pressure to remove macromolecular impurities, Remembrane separation to remove small molecular impurities, and concentrated into a concentrated solution with a Baumé degree of not less than 10 Be (60 ° C), spray-dried into a solid dosage form; or by adding modifiers to make an air-entraining agent for liquid dosage forms. The invention has novel concept, abundant raw materials, high production efficiency, low production energy consumption, low production cost, simple preparation method, green environmental protection, convenient implementation, small amount of air-entraining agent, large gas production, and introduced bubble pore size during concrete engineering application. Small, small spacing, concrete pores are more uniform, dense, non-connected, and have greater promotion.

The invention discloses a preparation method and an application of a lauramide concrete foaming agent. The method is characterized in that: lauric acid and hydroxyethylethylene diamine with a molar ratio of 1.0:1.0-1.5 are added into a reaction vessel, a solvent toluene is added, and the mixture is subject to a reaction for 2 to 5 hours under a temperature of 140 to 160 DEG C; the mixture is cooled, and a crude product of a yellow solid is obtained; the crude product is washed by using anhydrous acetone, and is dried, such that a white powdery solid is obtained, wherein the solid is an intermediate; the intermediate, chloroacetic acid and sodium hydroxide are formulated according to a molar ratio of 1:1.0-1.3:2.0-2.6; chloroacetic acid and sodium hydroxide are dissolved in water, such that a sodium monochloroacetate solution with a mass percent concentration of 10 to 20% is prepared; the intermediate is heated to 80 to 90 DEG C until melted, the sodium monochloroacetate solution is dropped into the intermediate, and the mixture is then subject to a reaction for 3 to 5 hours with maintained temperature; the mixture is cooled and filtered, insoluble substances are discarded, and the filtrate is the lauramide concrete foaming agent with excellent foaming performance.