Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

81results about How to "Strong decontamination ability" patented technology

Shale gas reservoir pre-fracture composite acid solution, preparation method and application thereof

InactiveCN105086989APrevent collapseCore dissolution rate maintenanceDrilling compositionAcetic acidHydrofluoric acid
The invention belongs to the field of petroleum engineering and relates to a shale gas reservoir pre-fracture composite acid solution and its preparation method and application. The composite acid solution comprises the following components: Component a) at least one component of hydrochloric acid, hydrofluoric acid, fluorboric acid, phosphoric acid, formic acid and acetic acid; and Component b) a corrosion inhibitor, a discharge aiding agent, a ferric iron stabilizer and a clay stabilizer. The composite acid solution containing different acids is selected for different reservoirs. Rock core corrosion ratio is 25-30%. A certain rock core corrosion ratio is maintained, and borehole wall collapse caused by too high corrosion ratio is also prevented. The corrosion inhibitor, the discharge aiding agent, the ferric iron stabilizer and the clay stabilizer which are used as additives have good compatibility with acid. The composite acid solution provided by the invention has advantages of fast dissolving speed, uniform mixing, high corrosion inhibition efficiency, high surface activity, good clay stabilizing effect and wide range. Applicable temperature of the composite acid solution is 20-180 DEG C. by the use of the composite acid solution, normal construction of large-scale fracturing of long horizontal-section shale gas wells can be guaranteed under the condition of existing equipment capacity.
Owner:CHINA PETROLEUM & CHEM CORP +1

Double-faced cleaning set

The invention relates to a double-faced cleaning set, and belongs to the articles for daily use. The double-faced cleaning set comprises a sucking disc, a convex block, a wiping block and a round hole, wherein one side of the sucking disc is provided with the convex block, the round hole is formed in the center of the wiping block, the size of the round hole is adapted to the size of the convex block arranged at one side of the sucking disc, one surface of the wiping block is provided with sponge, and the other surface of the wiping block is provided with a scouring pad. The double-faced cleaning set disclosed by the invention has the advantages that one surface of the wiping block which is used for cleaning is provided with the sponge, the other surface of the wiping block is provided with the scouring pad, oil stains can be easily removed as bubbles can be easily generated by the sponge, the cleaning capacity of the scouring pad is stronger, different surfaces can be used for cleaning according to needs, multiple cleaning tools can be prevented from being purchased, the wiping block can be attached to a ceramic wall tile or the inner wall of a water tank by the sucking disc after the wiping block is used, the space is saved, draining can be conveniently carried out, and the bacterial growth can be avoided.
Owner:陈红芳

Efficient phosphorus-removing saccharomyces and application thereof in domestic sewage treatment

InactiveCN110438020AStrong decontamination abilityImprove processing efficiency and stabilityFungiWater contaminantsCarbon sourceSewage
The invention relates to efficient phosphorus-removing saccharomyces and application thereof in domestic sewage treatment and belongs to the field of environmental microbiology. The saccharomyces strain is named Candida rugosa BL3 and belongs to Candida rugosa, bacterial colonies are in a light yellow waxy shape and linked by milk white filaments in the middle, and single colonies are milk white round, 2-3 mm, smooth and waxy on surface, not transparent, viscous and easy to prick up, have a strong wine aroma and can form round ascospores, pseudohypha and fungal hypha. The strain has an efficient phosphorus-removing function, requires no strict control on the dissolved oxygen environment, still has no phosphorus release phenomenon after being cultured for 60 h, and can be applied to biological sewage treatment processes. The strain has the optimum pH value range of 5-7 and growth temperature of 20-35 DEG C and adopts a mixed source of glucose and sodium acetate as the best carbon source. Actual domestic sewage treatment finds that the strain has the removal rate of phosphorus in sewage being 84.9%, the removal rate of ammonia nitrogen being 39.5% and the removal rate of COD being 78.3% under an aerobic condition at the pH value of 5 and at the temperature of 25 DEG C.
Owner:UNIV OF JINAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products