25results about How to "Efficient plugging" patented technology

The invention relates to a preparation method and application of an inner-rigid outer-soft core-shell structure silicon dioxide blocking agent for marine drilling fluid, and belongs to the field of deepwater oil and gas drilling. N-vinyl-2-pyrrolidone, dimethyl diallyl ammonium chloride, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are polymerized and grafted on the surface of nano silicon dioxide to form the silicon dioxide blocking agent with a core-shell structure and a rigid inside and a soft outside; by means of rigid plugging of a nano material and deformation filling flexible plugging of a high-molecular polymer, shale micro-nano pores are efficiently plugged with rigid inside and flexible outside, so that the stability of a well wall is maintained, meanwhile, secondary generation of hydrates is effectively inhibited, and the safety and efficiency of deepwater drilling are improved; the plugging agent provided by the invention reduces the demand on a large number of thermodynamic inhibitors, not only saves the cost, but also has the characteristic of environmental protection.

The invention discloses a modified nano-zinc oxide plugging agent and an oil-based drilling fluid, and belongs to the technical field of oil and gas field drilling. The modified nano-zinc oxide blocking agent is a nano-scale material prepared by taking 20-40nm nano-zinc oxide, an amino-containing silane coupling agent, a polycarboxylic compound, an olefinic bond-containing primary alcohol compound, a benzene ring-containing olefin compound, an initiator and a cross-linking agent as raw materials. The particle size of the modified nano-zinc oxide ranges from 60 nm to 320 nm, nano-scale cracks in a shale stratum can be effectively blocked, the well wall is stabilized, and well collapse accidents are prevented. And the oil-based drilling fluid used in the invention has good rheological property, stability, plugging property and the like under the shale formation condition.

The invention provides a bionic temporary plugging device and a preparation method and a temporary plugging process thereof. The temporary plug comprises a wrapping layer, a filling material, a rigid temporary plugging ball, a fixing rod and a clamping ring, the wrapping layer comprises a head part and a beard part, the head part is of a hollow structure, the beard part is composed of a plurality of strip-shaped bodies, and the head part and the beard part are separated through a clamping ring; the rigid temporary plugging ball is located in the head of the wrapping layer, and the filling material comprises high-water-absorption polyacrylamide and irregular rigid particles which are alternately distributed in the head of the wrapping layer; one end of the fixing rod is connected with the rigid temporary plugging ball, and the other end penetrates through the clamping ring and is fixed by the clamping ring. The invention further provides a preparation method and a temporary plugging process of the bionic slug. The jellyfish bionic temporary plug adopts a jellyfish bionic structure, self-adaptive plugging is carried out on the eroded shot hole by utilizing the characteristics of easy deformation and large hydrodynamic radius of the jellyfish bionic structure, and the jellyfish bionic temporary plug has the characteristics of high pressure bearing and strong setting, and can adapt to perforation holes of different specifications.

The invention relates to the technical field of plastic bag processing equipment, and discloses a plastic bag production cut leftover material recycling device which comprises a U-shaped conveying trough plate, a conveying belt is installed in the U-shaped conveying trough plate, an n-shaped plate is fixedly installed at the top of the U-shaped conveying trough plate, and a collecting pipe is fixedly installed between the n-shaped plate and one side of the U-shaped conveying trough plate. A prismatic material guiding opening is formed between one side of the collecting pipe and one side of the U-shaped conveying groove plate, a mounting plate is arranged in the n-shaped plate, two cutters are symmetrically and fixedly mounted at the bottom of the mounting plate, a through sliding groove is formed in the middle of the mounting plate, two sliding rods are fixedly mounted in the through sliding groove, and a sliding plate is movably connected between the two sliding rods in a sleeving mode; a rubber scraping block is fixedly mounted at the bottom of the connecting push plate; according to the recycling device for the leftover materials generated after plastic bag production and cutting, the cut waste materials can be effectively collected and treated in the plastic bag cutting process, and meanwhile the recycling device can guarantee the cutting continuity.

The utility model provides a leakage stopping and repairing device for river-near deep foundation pit construction. A grouting pipe is arranged on a plugging plate, a plurality of grouting holes are formed in a pipe body at one end of the grouting pipe, a grouting valve is arranged at the other end of the grouting pipe, a butt joint is arranged at one end of the grouting valve, a drainage pipe is further arranged on the plugging plate, and a drainage valve is arranged on the drainage pipe; pushing air cylinders are arranged on the two sides of the plugging plate, one ends of the pushing air cylinders are hinged to the surface of the plugging plate, and the other ends of the pushing air cylinders are hinged to the supporting plate. Supporting rods are further arranged on the two sides of the plugging plate and arranged below the pushing air cylinder, one end of each supporting rod is hinged to the surface of the plugging plate, and the other end of each supporting rod is hinged to the top plate. Immediate response and efficient plugging are achieved, specifically, a plugging plate in the device is matched with a grouting pipe and a grouting valve, and leakage holes can be rapidly positioned and plugged in the first time when leakage is found. Due to the design of the tip end of the grouting pipe, the grouting pipe can conveniently penetrate into the side wall of the foundation pit and directly act on a leakage point, accurate grouting is achieved through the porous grouting technology, and a water source is effectively blocked.

The invention relates to the technical field of petroleum leakage and particularly discloses a petroleum leakage quick plugging device which comprises a lower plugging seat and an upper plugging seat, fixing mechanisms are mounted on two sides of the outer surface of the lower plugging seat and two sides of the outer surface of the upper plugging seat, and a plurality of glue injection structures are fixedly connected to the outer surfaces of the lower plugging seat and the upper plugging seat at equal intervals in a penetrating manner. The lower plugging seat and the upper plugging seat are tightly attached together, the lower plugging seat comprises a plugging pipe, a sealing groove and two extension pipes, the two extension pipes are fixedly connected to the two ends of the plugging pipe respectively, the sealing groove is formed in the middle of the inner wall of the plugging pipe, and a plurality of partition plates are fixedly connected to the inner wall of the sealing groove at equal intervals; the two extension pipes are movably connected into the two fixing mechanisms in a penetrating and inserting mode, each fixing mechanism comprises a first arc plate, a groove, a fixing pipe, a clamping structure, an electric telescopic rod, a penetrating and inserting column and a penetrating and inserting rod, and the groove is formed in one side of the bottom end of the first arc plate; the leakage source is effectively blocked, and the fast and efficient blocking purpose is achieved.

The present invention particularly relates to a degradable soft diverter knot for temporary plugging of blastholes and a preparation method thereof, which belongs to the technical field of petroleum extraction. The diverter knot is made by compounding several degradable fibers with different solubility properties and different strengths in a certain proportion and twisting them into rope segments, which are then knotted. The diverter knot can achieve efficient plugging of irregular blastholes, and can be completely degraded within the time range required for fracturing, so as to restore production in time. The diverter knot has the advantages of strong pressure bearing capacity, good plugging performance, controllable degradation, and complete degradation without residue.

The invention relates to the technical field of power transformer equipment, and particularly discloses an electric power engineering oil-immersed power transformer convenient to install, which comprises a cuboid-shaped body, and the upper surface of the body is fixedly connected with a top plate. When the air pressure groove conveys air into the inserting pipe, the air pressure can enter the mounting pipe through the air pressure hole, namely, the air pressure in the mounting pipe is gradually increased, and then a pushing force is generated on the pushing plate through the auxiliary groove, so that the pushing plate moves towards the outer side along the limiting rod; according to the transformer installation device, the insertion plate is moved out of the insertion groove to be inserted into a hole reserved in the cement base, then the transformer is rapidly installed, the installation steps are greatly reduced, the installation efficiency is improved, the insertion plate can be effectively protected by arranging the insertion plate in the insertion pipe at the initial time, and the installation efficiency of the transformer is improved. And the situation that the plug board is bent and cannot be plugged and installed in the transportation process is avoided, so that the working stability of the transformer is improved.

The utility model discloses a fuse structure of an electric appliance, which comprises an insulating cover and a metal support, the metal support is connected with the insulating cover, the metal support is provided with a contact part and a clamping part, the clamping part is used for clamping a fuse and electrically contacting and conducting with the fuse, and the contact part is used for electrically contacting and conducting with a conductive terminal in the electric appliance; the fixing and conductive functions of the fuse are integrated through the metal support, the design of an insulation frame is omitted, the design difficulty of an insulation cover is reduced, and meanwhile the insulation frame is prevented from occupying the internal volume of electrical equipment. Besides, the clamping portion of the metal support can firmly clamp the fuse, electric contact conduction between the fuse and the metal support is guaranteed, the contact portion can stably and electrically contact with a conductive terminal in an electric appliance, and normal work of the electric appliance is guaranteed. When the fuse needs to be replaced, only the insulation cover needs to be separated from the electrical equipment, the fuse can be conveniently taken out from the clamping part of the metal support, and effective plugging and unplugging of the fuse are achieved.

The invention provides a modified silicon dioxide fiber, an oil-based drilling fluid and a preparation method of the modified silicon dioxide fiber and the oil-based drilling fluid. The preparation method of the modified silicon dioxide fiber comprises the following steps: carrying out surface modification on silicon dioxide fiber by using a silane coupling agent to obtain a first modified product; and carrying out surface modification on the obtained first modified product by using lauroyl glutamic acid and tert-butyl peroxypivalate to obtain the modified silicon dioxide fiber. The oil-based drilling fluid comprises an oil phase, bentonite, a flow pattern regulator, a filtrate loss agent, modified silicon dioxide fibers, a weighting agent and a lubricant, 100 parts by weight of the oil phase is taken as a reference, the bentonite accounts for 3-8 parts by weight, the flow pattern regulator accounts for 7-10 parts by weight, the filtrate reducer accounts for 3-5 parts by weight, the modified silicon dioxide fiber accounts for 18-22 parts by weight, the lubricant accounts for 8-12 parts by weight, and the weighting agent accounts for 20-26 parts by weight. The oil-based drilling fluid provided by the invention has good solid-phase dispersion performance and plugging performance.

The invention discloses a dendritic macromolecular composition for gas channeling prevention and underground carbon sequestration, hydrogel as well as a preparation method and application of the dendritic macromolecular composition. The dendritic macromolecule composition is prepared from the following components in percentage by weight: 0.06 to 0.4 percent of dendritic macromolecules; 0.8-1.6 wt% of sodium carboxymethyl cellulose, and the balance of water. The dendritic macromolecules are at least one of second-generation and third-generation dendritic macromolecules prepared from ester monomers and amine monomers through iterative Michael addition reaction by taking amino-terminated dendritic macromolecules as cores; the ester monomer is methyl acrylate; the amine monomer is selected from one of tris (2-aminoethyl) amine, diethyltriamine and triethyltetramine. CO2 is introduced into the composition to form hydrogel with a three-dimensional network structure, the hydrogel has high-density active sites, and the reaction efficiency with CO2 can be remarkably improved, so that long-term channeling sealing and carbon sequestration performance is exerted in the CO2-EOR process, the problem of oil displacement efficiency reduction caused by gas channeling is relieved, and blocking-sealing integrated carbon sequestration is realized.

The invention belongs to the technical field of dam termite nest detection and termite comprehensive control, and provides a complete method for dam termite cave positioning, termite killing and termite cave blocking. Comprising the steps of C-Scan profile acquisition, deep convolutional neural network inversion, artificial intelligence neural network discrimination, drilling position selection, drilling, video stream signal acquisition, video stream signal analysis, termite dosing and killing, cement clay mortar preparation and ant nest grouting. According to the invention, through C-Scan profile acquisition, deep convolutional neural network inversion, artificial intelligence neural network discrimination and drilling position selection, the accuracy and efficiency of ant nest detection and identification are improved; by controlling the monitoring platform and heating the volatile medicament capsule, the damage of liquid medicament permeation or other methods to the surrounding soil environment is avoided, and the effective killing of the whole space distribution of the termite nest is realized; the glass beads and ettringite are doped into the silicate superfine cement, so that efficient plugging of dam ant nest grouting is realized.

The invention discloses a preparation method of a composite material for plugging water burst of a mine hole, and relates to the technical field of preparation of mine hole plugging materials, and the preparation method comprises the following steps: preparing raw materials, mixing dry materials, weighing the raw materials in parts by weight, and proportioning water added into the dry mixture; and constructing and maintaining. Water flow scouring can be effectively resisted, and rapid plugging is achieved; meanwhile, a large amount of fly ash and tailing slag industrial solid wastes are utilized, the raw material cost is remarkably reduced, and the method is green and environment-friendly; the overall performance adapts to complex geological conditions, and the plugging agent is particularly suitable for efficient and reliable plugging and filling of water bursting cracks, goaf and subsidence areas in projects such as mines and tunnels.

The invention relates to the technical field of plugging materials, in particular to a preparation method and application of a graphene / cellulose hybrid composite aerogel plugging material.The preparation method comprises the following steps that A, graphene oxide dispersion liquid is prepared and heated and stirred to adjust the pH value to 4.5-8.5; b, sequentially adding hydroxypropyl methyl cellulose, polyvinyl alcohol, polyacrylamide and a sodium borate solution into the graphene oxide dispersion liquid treated in the step A at intervals to obtain a modified graphene dispersion liquid; and C, heating, preserving heat and dialyzing the modified graphene dispersion liquid obtained in the step B, repeating freezing and unfreezing for at least two times after dialyzing, performing freeze drying, and performing thermal annealing treatment in an inert atmosphere to obtain the graphene / cellulose hybrid composite aerogel plugging material. The dense holes in the surface and the interior of the composite aerogel plugging material are beneficial to absorption of oil to form a more compact plugging network structure layer, a good filling and covering effect on cracks is achieved, and the cracks are effectively plugged.

The application discloses a kind of breach plugging assembly type pile body truss modular assembly method, belong to major natural disaster prevention and public safety technical field.The method includes four steps of breach monitoring and situation assessment, emergency rescue resource preparation, assembly type pile body truss module cooperative plugging operation, later reinforcement.Through the steel pipe pile that is punched into in upstream and downstream of breach, form box type interception structure by quickly assembling the scaffold steel pipe truss module prefabricated on embankment and steel pipe pile, effectively reduce the flow velocity of breach mouth water;Tilt fill stone residue material between the interception structure and form occupation body, throw fill loose soil after closure and close gas, finally through the later reinforcement of building moon embankment and slurry pressure injection.The application is especially suitable for important embankment breach emergency rescue plugging with fast water flow velocity and deep water depth through pile body-truss modular cooperative design, with fast emergency rescue construction speed, strong safety, high one-time success rate, solid and reliable characteristics, suitable for emergency rescue under extreme hydrological conditions.

This invention relates to a method for preparing and applying a core-shell structured silica plugging agent with a rigid inner structure and a flexible outer structure for marine drilling fluids, belonging to the field of deepwater oil and gas drilling. This invention uses N-vinyl-2-pyrrolidone, dimethyl diallyl ammonium chloride, acrylamide, and 2-acrylamide-2-methylpropanesulfonic acid polymerized and grafted onto the surface of nano-silica to form a core-shell structured silica plugging agent with a rigid inner structure and a flexible outer structure. By utilizing the rigid plugging of nanomaterials and the flexible plugging of polymer deformation, this method effectively seals the micro- and nano-pores of shale and mudstone, thereby maintaining wellbore stability. Simultaneously, it effectively inhibits the secondary formation of hydrates, improving the safety and efficiency of deepwater drilling. Furthermore, the plugging agent of this invention reduces the need for large amounts of thermodynamic inhibitors, saving costs and possessing environmentally friendly properties.

The utility model relates to the technical field of machining tools, in particular to a rotary tool for machining, which comprises a tool handle and a cutting tool bit arranged below the tool handle, a clamping piece is fixedly connected inside the tool handle, and an outer ring fixing portion is formed at the bottom of the clamping piece through a formed inserting groove. An inner ring fixing part is fixedly connected into the inserting groove, the inserting groove and the inner ring fixing part form an annular inserting groove body, the top of the cutting tool bit is fixedly connected with a tool bit inserting part, the tool bit inserting part can be inserted into the annular inserting groove body, and a plurality of mounting hole bodies are formed in the peripheral side of the inner ring fixing part. An electric push rod is fixedly connected to the interior of the mounting hole body, a plurality of penetrating insertion limiting grooves are formed in the peripheral side of the tool bit insertion piece, and the free end of the electric push rod can be inserted into the insertion limiting grooves. The problem that in the prior art, the tool bit replacement step is tedious and complex is effectively solved, and the purpose of simplifying the tool bit replacement operation is achieved.

The utility model discloses a ball valve seat sealing structure, which relates to the technical field of valves, and comprises a valve seat and a ball body, the ball body is arranged on one side of the valve seat, a plastic sealing ring is arranged between the ball body and the valve seat, a first sealing element is arranged on one side of the valve seat, and the first sealing element is positioned between the ball body and the valve seat; the first sealing piece comprises a circular ring and a triangular rubber ring wrapping the circular ring, and the side portion of the triangular rubber ring is tightly attached to the side portion of the ball body and the side portion of the valve seat. A valve deck is arranged on the side, away from the ball, of the valve seat, and a second sealing piece for sealing a gap between the valve deck and the valve seat is arranged between the valve deck and the valve seat. The second sealing piece comprises a lower sealing ring arranged on the valve seat and an upper sealing ring arranged on the valve deck. Through the arrangement of the first sealing piece and the second sealing piece, a good sealing effect can be achieved, a long-time sealing effect can be achieved without periodic replacement, and the sealing device is convenient to use.

This utility model relates to a grouting and water-blocking device for treating water inrush at a well working face. It includes a water-blocking structure and construction tools. The water-blocking structure is positioned above the water-rushing working face and below the static water level. The structure comprises, from bottom to top, an isolation filter layer, a pressure cushion layer, and a single-liquid grout stop layer. The construction tools include a grouting pipe and a high-pressure grouting pump. The upper end of the grouting pipe is connected to the high-pressure grouting pump, which is located outside the well. The grouting pipe consists of a seamless steel pipe body with several outwardly extending grout nozzles in the upper middle part. A limiting device is located below the grout nozzles on the seamless steel pipe, allowing grout to flow only from the nozzles when activated. This utility model employs a three-layer combined grouting and water-blocking structure consisting of an isolation filter layer, a pressure cushion layer, and a single-liquid grout stop layer. The grout stop layer structure formed by underwater integrated casting is more robust, enabling rapid and efficient sealing of water inrush at the working face and reducing project costs.

The invention provides a porous mixed grouting device capable of quickly plugging high-permeability water and a construction method thereof.The porous mixed grouting device comprises a connecting main pipe, a cement grout pump station and a plurality of chemical grout pump stations, and the cement grout pump station is communicated with the connecting main pipe by arranging a cement grout grouting pipe; the chemical grout pump stations are communicated with the connecting main pipe through chemical grout inlet pipes, the number of the chemical grout inlet pipes corresponds to that of the chemical grout pump stations in a one-to-one mode, valves are independently arranged on the cement grout injection pipe and each chemical grout inlet pipe respectively, and the lower portion of the connecting main pipe is communicated with a grout mixing main pipe. A stirring mechanism is arranged in the connecting main pipe and the slurry mixing main pipe, the lower end of the slurry mixing main pipe is communicated with a plurality of slurry jetting thin pipes, the cement slurry pump station and the chemical slurry pump stations are arranged, valves are independently arranged, the mixing proportion of multiple kinds of slurry is effectively and accurately controlled, and the material cost and the plugging effect are optimized; and rapid curing and efficient plugging are realized.

A stator glue-filling device includes: a mandrel for inserting into the inner hole of the stator to seal the inner hole; the mandrel includes a first shaft segment and a second shaft segment, the diameter of the second shaft segment being larger than the diameter of the first shaft segment; the first shaft segment and the second shaft segment are connected by a tapered ramp section; the first shaft segment includes a large-diameter segment and a small-diameter segment, the diameter of the large-diameter segment being adapted to the diameter of the inner hole to position the mandrel; the small-diameter segment corresponds to the end wall of the inner hole, the diameter of the small-diameter segment being smaller than the diameter of the large-diameter segment, so as to form a deformation space between the small-diameter segment and the hole wall of the inner hole for the mandrel to expand and contract thermally. During glue filling, the mandrel expands due to heat, and the diameter of the small-diameter segment increases. After the glue material cools and forms, the mandrel can cool and shrink back, and the restored diameter of the small-diameter segment can form a gap on the outer periphery of the small-diameter segment, which facilitates the smooth removal of the mandrel from the stator and improves the product qualification rate.

The invention belongs to the technical field of deep flow regulation of oil reservoirs, and particularly relates to salt-resistant and shear-resistant gel particles for deep flow regulation of oil reservoirs and a preparation method of the salt-resistant and shear-resistant gel particles. The core-shell structure design is adopted, the inner core of the particle is prepared through a reverse emulsion method, and the outer shell of the particle forms a uniform coating structure through butyl acrylate and 1, 4-butanediol diacrylate. When ester bonds in the particle shells are hydrolyzed, water enters the particle cores, so that the particles absorb water and expand. Sodium alginate containing a large amount of-COO-and-OH is introduced into a particle inner core to serve as a functional monomer,-COO-is complexed with divalent metal ions to form a stable network structure, and a large amount of hydrogen bonds can be formed in the presence of-OH, so that the stability of a gel network is further enhanced. The salt-resistant and shear-resistant gel particle with the core-shell structure is high in mechanical performance, can keep good stability in a high-salt environment, is good in deep migration performance, and can effectively realize plugging and flow regulation of deep reservoirs.

The anodic oxidation treatment process for the titanium alloy part comprises the following steps that S1, pretreatment is conducted, specifically, alkaline oil removal, acid pickling and ultrasonic microetching are conducted; s2, sectional type anodic oxidation, wherein pre-oxidation, main oxidation and supplementary oxidation are included; and S3, post-treatment, including low-temperature sealing, silane modification and hot air drying. A titanium alloy surface oxide layer is removed through composite pretreatment, and a micro rough structure is formed; then, a novel environment-friendly electrolyte is adopted, segmented oxidation is achieved through gradient regulation and control of voltage and current, and an oxidation film of a gradient structure is prepared; and finally, carrying out low-temperature sealing and silane modification composite post-treatment to improve the performance of the film layer. The anodic oxidation film obtained through the anodic oxidation treatment process of the titanium alloy part is high in binding force, excellent in corrosion resistance, environmentally friendly and uniform in film layer.

The present application relates to material packaging equipment technical field, specifically to a kind of material packing integrated equipment, including support seat, rack fixed in the top of support seat and bag gripper fixed in the top of rack one side, through the setting of bag gripper, drive assembly and reinforcing assembly, the material packing integrated equipment of present can accurately apply reinforcing glue to the bottom of packaging bag when using, cooperate hot air rapid drying to form dense wear-resistant glue layer, efficiently block bag bottom seam sewing pinhole and seam gap, then utilize hot-melt pressing plate to carry out secondary hot-melt pressing at the more bottom end position of bag bottom sewing line, form a dense hot-melt pressing layer sealing structure, realize the secondary reinforcement of bag bottom.The design greatly improves the wear resistance and impact resistance and pressure resistance of bag bottom, effectively avoids the problem of bag bottom damage and leakage caused by material scratching and long-term stacking, adapts to packaging bags of various materials, significantly reduces the loss rate in the process of material storage and transportation, improves the stability and reliability of packaging operation.