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68results about How to "Good blocking performance" patented technology

Thickened oil thermal recovery channeling sealing agent, channeling sealing agent thick liquid, preparation method of thick liquid and thickened oil thermal recovery profile control channeling sealing method

The invention discloses a thickened oil thermal recovery channeling sealing agent, a channeling sealing agent thick liquid, a preparation method of the thick liquid and a thickened oil thermal recovery profile control channeling sealing method, and belongs to the technical field of oilfield chemistry and oil exploitation engineering. The oil exploitation comprises components in percentage by weight as follows: 45%-65% of a sulphoaluminate gelling agent, 16%-40% of perlite floating beads, 0.5-0.7% of a suspending agent, 14%-18% of a stabilizer and 0.3%-0.5% of a retarder. Water is added to the channeling sealing agent to form the thick liquid, and the water-ash ratio is controlled to be 3-4.5 in the preparation process. The density of the channeling sealing agent thick liquid is low and ranges from 1.05 g/cm<3> to 1.1 g/cm<3>, the thick liquid can permeate to a steam channeling passageway in the deep position of the ground stratum and is cured for 4-12 hours at the temperature ranging from 30 DEG C to 100 DEG C, a cured product can resist high-temperature steam at the temperature of 300 DEG C, the blocking effect is good, the steam channeling problem of the middle lower part of an oil reservoir can be solved, and a better blocking effect is realized on channeling sealing of the overlapping layer of steam of a thick oil layer.
Owner:CHINA PETROLEUM & CHEM CORP +1

Integrative blockage relieving agent for uranium deposit ore bed

The invention relates to an integrated blockage removal agent used for uranium deposit seams, wherein, the integrated blockage removal agent is formed by the compounding of retarded acid, corrosion inhibitor, oxidative bactericide, surfactant and water according to a certain weight percentage. The blockage removal agent is formed by the following compounding method: firstly, under normal temperature, clean water is quantitatively added in a square pool; subsequently, under the mixing condition, according to the proportion, the corrosion inhibitor, the retarded acid, the surfactant and the oxidative bactericide are added in the square pool, wherein, according to the consistency, the retarded acid consists of 1 percent of hydrofluoric acid and 5 percent of acetic acid; the dosage of the retarded acid is 35-40 percent, the dosage of the corrosion inhibitor is 0.01 percent, the dosage of the bactericide is 0.01 percent and the dosage of the surfactant is 0.05 percent; and the clean water is added to the square pool till the consistency is 100 percent. The blockage removal agent has the effects of corrosion dissolution, sterilization and mechanical impurity and bacterium body disposal, eliminates the chemical deposits generated in the seams, effectively kills the bacteria and the microorganism, has the function of anti-fouling and improving the permeability of the seams, greatly prolongs the plugging period of the seams and improves the mining efficiency.
Owner:LIAOHE GASOLINEEUM EXPLORATION BUREAU

Uranium well air pumping dredge method

The invention relates to a uranium well gas lifting stemming removing method used in a sandstone type uranium deposit regent-free uranium mining production process. The method comprises the steps: a polyethylene pipe is put in a uranium well, and a reverse circulation gas lifting mode is adopted to achieve the purpose of plug removing, wherein, the reverse circulation gas lifting mode is that high-pressure gas is injected in the annular space between a PVC casing and the polyethylene pipe so that the liquid surface in the annular space is lowered gradually, inside and outside differential pressure is formed outside the polyethylene pipe, the liquid in the polyethylene pipe is lifted out of the well mouth under pressure, then negative pressure is formed at the ore bed segment at the well bottom simultaneously so as to cause the fluid in a uranium ore bed to flow faster towards a well casing, and after that, stemming of gas, mechanical impurities and the like in the ore bed flow out to ground along with the high speed fluid by the polyethylene pipe. The method can be applied to the stemming removing operation of uranium deposit ore bed caused by gas and mechanical impurities; and by utilizing the technological method, good stemming removing effect is obtained, the production period of the uranium well is improved greatly and the uranium mining production cost is reduced.
Owner:LIAOHE GASOLINEEUM EXPLORATION BUREAU

Channeling-preventing agent for extra-low permeation oil accumuiation carbonic anhydride oil displacement and application thereof

The invention provides a fleeing proof agent for the carbon dioxide flooding of oil reservoirs with ultra-low permeability and the application of the fleeing proof agent. The invention is characterized in that: the main agent of the fleeing proof agent is the amine substance of organic compounds; the fleeing proof agent comprises at least one amine substance and a release agent; the release agent is the ethanol comprising a certain amount of water, a hydrocarbon substance or nitrogen; the release agent is used to prevent the chemical reaction caused by the premature contact between the amine and the carbon dioxide. The invention is suitable for the gas channeling inhibition during the carbon dioxide flooding process for oil reservoirs with ultra-low permeability. The invention has the advantages that: the fleeing proof agent mainly block the gas channeling channel by the salt precipitation generated by the reaction between the carbon dioxide and the amine; the generation time of the salt precipitation is controlled by the injection volume of the release agent; the swept volume displaced by the carbon dioxide is enlarged, and the improvement of the economic benefit of carbon dioxide flooding is favored.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Anti-ultraviolet protection type easy-care finishing liquid for shirts and finishing method of shirts

InactiveCN106758200AImprove anti-shrinkage and anti-wrinkle effectFeel goodFibre treatmentFatty alcoholPolymer chemistry
The invention discloses anti-ultraviolet protection type easy-care finishing liquid for shirts and a finishing method of the shirts. The anti-ultraviolet protection type easy-care finishing liquid is prepared from butanetetracarboxylic acid, ammonium citrate, triethanolamine, malic acid, sodium hypophosphite, propylene glycol, quaternized modified amino silicone oil, boric acid, amino-modified etherifed polysiloxane, fatty alcohol-polyoxyethylene ether, diphenylethylene disulfonate derivatives, chitosan, N, N-dimethyl formamide, tetrabutyl titanate, diluted hydrochloric acid, an emulgator REO15, an appropriate quantity of titanate coupling agent, an appropriate amount of maleic anhydride, an appropriate amount of absolute ethyl alcohol and an appropriate amount of deionized water. The anti-ultraviolet protection type easy-care finishing liquid for the shirts and the finishing method of the shirts have the advantages that the finishing liquid is safe, healthy, non-irritating and environment friendly, and is excellent in ultraviolet ray shielding performance and protection effect, high in combining capacity, lasting in protection performance and capable of making the shirts highly resistant to crease and wash, easy to care and full, soft and smooth to touch.
Owner:阜阳市豹子头服饰科技有限公司

Oil well de-blocking agent as well as preparation method and application thereof

The invention provides an oil well de-blocking agent as well as a preparation method and application thereof. The oil well de-blocking agent is prepared from the following ingredients through being metered by regarding the total weight of the de-blocking agent as 100 percent: 30 to 45 percent of aromatics solvents, 30 to 45 percent of kerosene, 15 to 20 percent of oil soluble penetrating agents and 5 to 10 percent of nonionic surfactants. Compared with the existing oil well de-blocking agent, the oil well de-blocking agent has the advantages that the open flash point can reach a value being 50DEG C or above; the safety is high; the preparation process is simple; the de-blocking efficiency on asphaltene and colloidal sediments is high; the solution after the de-blocking does not need to bedischarged out and can directly enter a ground surface manifold system; safety and environment protection are realized; the de-blocking agent is applicable to the oil well and near-well zone blockingmaterial de-blocking in the oil well mining process.
Owner:PETROCHINA CO LTD
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