704results about How to "Guaranteed permeability" patented technology

The invention relates to an oil field production technique, in particular to a fracturing method applied under the oil well to improve new well production capacity of low permeability reservoir before being brought into production. The fracturing reformation course at least comprises common fracturing technique and is characterized in that the method uses a compound application of more than two techniques of the use of acid fracturing liquid, or diversion agent or acid liquid and diversion agent by adopting high-energy gas fracturing technique; the upper sealed fracturing pipe is adopted during the working of hydraulic fracturing; the acid liquid is adopted during a pad fluid stage as the working liquid; the diversion agent is added for one or more times to seal fractured cracks; an increasing working flow rate is adopted before and after the adding of the diversion agent. The method of the invention can increase oil discharging area after fracturing, reduce expansion rate of clay minerals in fractured reservoir and improve completion of oil well reformation, fracturing effect and production capacity of low permeability reservoir after fracturing.

The invention discloses a planting method for tea-oil trees. The method comprises the following steps of: (1) selecting soil and an area, building horizontal steps on a slope around a mountain, digging drainage ditches on the inner sides of the steps, and digging pits at fixed points according to a planting distance, wherein the pits are arranged to form delta shapes; (2) after the pits are dug, properly applying garbage tankage, rice straws, dicranopteris pedata and farmyard manure, wherein base fertilizers are required to be deeply applied; (3) during the blossoming of the tea-oil trees, marking early blossoming type plants of a selected tea-oil tree variety, selecting high-yield and high-premonition plants from the marked plants when fruits are matured in the next type, and picking mature and full tea-oil tree seeds; (4) sowing the seeds from every early November to February of the next year, wherein germination is accelerated and the seeds are sown after the seeds are sterilized; (5) after the seeds come up, selecting seedlings, and filling gaps with the seedlings; and (6) after the tea-oil trees are fruited, applying the farmyard manure and a compound fertilizer or a phosphate fertilizer, a potash fertilizer and urine in every May to July. The problems of irrational structure of a planting structure, low oil yield, shortage of scientific management and the like of the conventional tea-oil tree planting process are solved.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

This invention relates to soft magnetic compound materials, which are characterized by the following: the said materials comprise iron material, isolation agent and lubrication agent with their weight percentage as 92-99 úÑ, 0.5-5 úÑ , 0.5-3 úÑ; the said iron material is powder material, which comprise deoxidized powder, atomized iron powder, hydroxide powder and iron alloy with iron of 80-99.8úÑ; Particle distribution of 20-500; the said isolation agent adopts nanometer calcium carbonate powder or ceramics powder or magnetic oxidation power; the said lubrication is micro powder. The process comprises the following steps: mixing, shaping, solidifying and stainless processing.

This invention discloses method and specific apparatus for producing fireproof glass. The apparatus comprises: an upper stage plate, a furnace, a cooling wind grating and a lower stage plate. A baffle is set between the heating furnace and the cooling wind grating. The method comprises: (1) spray-coating a cesium/potassium salt solution onto glass at normal temperature; (2) naturally wind-drying the spray-coated glass at normal temperature, placing in a 680-725 deg.C tempering furnace, rapidly heating, cooling, circulating the glass between the heating furnace and the cooling wind grating by a roll so that the heating and cooling temperature is uniform, and unloading to obtain fireproof glass. The cesium/potassium salt solution comprises: cesium salt 0.8-1.2%, potassium salt 38-41%, acetone 40-45%, formic acid 8-13%, and Swiss-78 6-8%. The fireproof glass has such advantages as high heat resistance, low specific gravity, high light permeability, no yellowing, and no air bubbles.

The present invention discloses a processing method of a thermoplastic elastic insole. A TPR thermoplastic elastomer (thermoplastic rubber) as the main raw material, and the following processing steps are adopted, firstly, compounding is that the TPR thermoplastic elastomer and toner are compounded according to the weight ratio of 10000 to 8 till 10000 to 16 and are sent into a kneading machine to be kneaded for 20 to 40 minutes; secondly punching a cloth is that a base material of the cloth is punched and sheared as the shape of a mould of the insole which is needed to for a laying cloth; thirdly injection mold and molding are that at first placing the laying cloth is that the laying cloth is put inside an injection mold and is placed above a lower mold; then feeding is that the well kneaded raw material is put into an injection mold and molding machine, than molding is that the injection mold is sent into the injection mold and molding machine, and the injection mold and molding machine starts to inject towards the injection mold, and the injection temperature is 150 DEG C to 250 DEG C, and injection pressure is 30 bar to 90 bar, and a rotating speed of a screw is 25 to 75 turns per minute, and a backpressure is 3 bar to 4 bar; fourthly punching a margin is that the insole is taken out from the mold, and the redundant marginal material joints are punched down by a punch; fifthly punching is that exhausting pylomes are punched at the insole. The insole produced by the present invention has good breathability, pliability and rebound resilience.

The invention provides an additive for balancing the gastrointestinal health of animals, which is prepared by absorbing 3 to 15 percent of tributyrin, 21.5 to 52.5 percent of lactic acid and 3.5 to 7.5 percent of formic acid with special carrier white black carbon by grade and layer respectively and then combining the mixture with 1 to 10 percent of glutamine. The additive has the effects of controlling diarrhea and accelerating restoration of injured intestinal tract, and starting from a philosophy of balancing the relationship between the gastropore and the intestinal tract, saving resources, reducing environment loads and improving quality of livestock products, a comprehensive gastrointestinal health management scheme is provided.

The invention discloses an antibacterial cotton cloth and a preparation method thereof. The antibacterial cotton cloth is produced by the following method and the method comprises the following steps: adding the silver-carrying hydroxylapatite, sodium hexametaphosphate, deacetylated chitin and citric acid into the water to form a solution; placing an absorbent cotton cloth into the solution prepared by the step (1) for padding and the residual padding rate is 60-100%, then pre-baking for 1-3 minutes at the temperature of 80-100 DEG C and then baking for 1-4 minutes at the temperature of 130-170 DEG C, therefore, the antibacterial cotton cloth can be produced. The invention adopts the silver-carrying hydroxylapatite which has broad antibacterial spectrum and good compatibility with the human body as the antibacterial finishing agent, therefore, the cloth is highly safe; the molecule of the silver-carrying hydroxylapatite contains a hydroxy base group that can produce acting force with the cellulose molecule, thus being capable of improving the binding strength between the antibacterial finishing agent and the cotton gauze; and the cloth has good washing fastness; The antibacterial cotton cloth of the invention contains antibacterial finishing agent that can kill or restrain the growth of the bacteria, and simultaneously keeps the good permeability, moisture absorption property and softness of the cotton cloth.

The invention relates to a novel PEG (polyethylene glycol) in-situ covalent grafted modified alginate/polycation microcapsule. The microcapsule is a hydrogel bead of alginate, or the inside of the microcapsule is filled with liquid or hydrogel of alginate and the outer surface is a polyelectrolyte composite hydrogel film which is formed by polycation and alginate; a covalent bond is formed on the microcapsule through a click chemical reaction between an alkylene group and an azide group on the alginate, and PEG is grafted to the surface of the alginate hydrogel bead or alginate/polycation/ alginate microcapsule in an in-situ covalent mode; and a finished product is applicable to embedding of bioactive substances and living cells. The microcapsule film not only keeps excellent biocompatibility but also takes good film strength into consideration, so as to guarantee the integrity of the film in the processes of tissue cell transplantation as well as cell culture and application.

The invention discloses a strip seeding production line for raising hybrid rice seedlings. The production line is composed of a front part, a rear part and various mechanisms, wherein a driving motor, a drive device, a fertilizer applying mechanism, a subsoil mechanism, a brushing and flattening mechanism and a groove rolling mechanism are arranged on a front rack; a driving motor, a drive device, a seeding mechanism, a water spraying mechanism and a soil covering mechanism are arranged on a rear rack; and all the mechanisms are driven in a stepless synchronization manner and are respectively provided with a regulating device, so that the capacity of each mechanism can be regulated according to different needs. After an empty seedling disk passes an inlet, the drive devices convey the seedling disk into the production line, and thus the seedling disk can be driven at the bottom of each mechanism, wherein the fertilizer applying mechanism applies a thin layer of seedling strengthening agent fertilizers at the bottom of the seedling disk; the subsoil mechanism spreads subsoil on the fertilizers distributed in the seedling disk; the brushing and flattening mechanism brushes the subsoil on the surface of the seedling disk so as to flatten the subsoil; the groove rolling mechanism rolls 18 trapezoidal grooves in the subsoil on the seedling disk; the strip seeding mechanism quantificationally sows sprout seeds into the grooves in time by virtue of a strip seeding device; the water spraying mechanism firstly sprays atomized water to position the seeds in the grooves and then sprinkles water for the secondary time so as to ensure that the water is completely permeated into the subsoil; and the soil covering mechanism overlays a thin layer of fine soil on the seeds to prevent the exposure of the seeds so as to ensure that the seeds are not influenced, so that the one-time seeding is finished by the production line. The production line provided by the invention is suitable for strip seeding in the raising of the hybrid rice seedlings.

The invention discloses a preparation method of a crack type carbonate rock core. The preparation method comprises the steps of firstly, mixing calcium carbonate powder, epoxy resin and an EP (Epoxy Resin) curing agent in a ratio, then pressing and curing to form a square rock board; then cutting the rock board by using an automatic slicing machine along different directions to form cracks with different shapes; and finally, drilling rock cores at different crack angles in the rock board with the cracks by using a rock core drilling machine. The prepared rock cores are basically equal in matrix porosity and permeability, and different in crack number and directions, and thus the demand on a crack type rock core exploitation simulation experiment can be met.

The invention discloses an optimal scheduling method and device for a flexible interconnection power distribution network. The method comprises steps of determining a flexible interconnection device of the flexible interconnection power distribution network; utilizing active and reactive power of a converter of the flexible interconnection device as a decision variable, taking the minimum comprehensive power supply cost and the minimum voltage deviation of the flexible interconnection power distribution network as optimization objectives, performing predictive control according to a classic model, and establishing an intra-day optimal scheduling model of the flexible interconnection power distribution network, wherein the intra-day optimal scheduling model comprises a prediction model androlling optimization, the prediction model adopts a voltage sensitivity method to predict a voltage of each node in the flexible interconnection power distribution network, and the rolling optimization adopts an adaptive dynamic weight method to process a multi-objective optimization problem containing comprehensive power supply cost and voltage deviation. The method is advantaged in that a problem that research and analysis of operation scheduling of the flexible interconnection power distribution network in related technologies are not enough to meet the current technical requirements is solved.

The invention discloses a crack plugging agent based on expansion particles and solidifiable particles, and belongs to the technical field of profile control and water plugging of an oil field. The crack plugging agent is composed of the expansion particles and the solidifiable particles which are separately stored, the mass ratio of the solidifiable particles to a solidification agent is 100:(5-20), and the content of the expansion particles is indefinite; the solidifiable particles are prepared from a solid core and film-coated resin in a mass ratio of 100:(5-15). The solidifiable particlesare high in strength, high in temperature resistance and salt tolerance and wide in oil reservoir applicability; an immovable plug formed by the solidifiable particles has an interception function ofa screen net, the breakthrough pressure gradient of the expansion particles in cracks can be obviously improved, the expansion particles are forced to remain in the cracks to continue to give play toa water plugging effect, meanwhile, the immovable plug has a penetration capacity, water, a gel breaker and the like are allowed to pass through the immovable plug so as to remove plugging of the expansion particles, and the crack plugging has restorability. The crack plugging agent has a good water plugging effect in water plugging of the oil field.

The invention belongs to the field of a metal ion sensing technology, in particular to an electropolymerizable fluorescent sensing material and application of the electropolymerizable fluorescent sensing material on fluorescent or electropolymerizable detection of metal ions. According to the electropolymerizable fluorescent sensing material, 2, 7-fluorene and 2, 2'-dipyridyl (or 1, 10-phenanthroline) are served as a main chain, and a side chain is connected with a carbazole group through an alkyl group. A rigid main chain structure of a compound provided by the invention guarantees the fluorescent sensing material to have high fluorescent efficiency, but a side chain of strong metal identification unit guarantees selectivity of a detection material. In addition, a micropore structure of a film prepared by electropolymerization can effectively guarantee the metal ions to quickly diffuse in the film and improve flexibility of film detection. According to the fluorescent sensing material provided by the invention, raw materials with cheap prices are easily obtained, and a synthesis process is relatively simple, so that the electropolymerizable fluorescent sensing material is a metal ion fluorescent/ electrochemical sensing film material with high potential.

The invention provides an asymmetrical stainless steel filter membrane tube and a production method thereof. The asymmetrical stainless steel filter membrane tube produced by the production method for the asymmetrical stainless steel filter membrane tube comprises a support layer and a control layer and is characterized by further comprising stainless steel fiber felts between the support layer and the control layer. According to the asymmetrical stainless steel filter membrane tube disclosed by the invention, the stainless steel fiber felts are additionally arranged among different powder layers, so that the filtering precision and the filtering performance of the filtering tube in performance are ensured; and meanwhile, the problems of cracking, peeling and the like of the stainless steel filter membrane with mutant fluctuant gradient in the sintering process are solved to the great degree.