30 results about "Cement fixation" patented technology

A wireline conveyed, gas driven setting tool configured to set downhole tools including, without limitation, frac plugs, bridge plugs, cement retainers and packers. The setting tool is functioned by selectively igniting a power charge inside of a firing head. As the power charge burns, it generates gas that acts upon a piston area to stroke the setting tool. A dampening media, as well an optimized flow area at or near the distal end of the setting tool, act to slow the setting stroke.

The invention discloses a radioactive waste treatment method which comprises the following steps: firstly, treating a waste ventilation filter element to obtain a glass substrate, and then carrying out plasma high-temperature melting treatment on to-be-treated miscellaneous dry waste by adopting a glass material containing the glass substrate to obtain glass-like molten slag. The radioactive waste treatment method is ingenious in conception and simple and reasonable in step, the waste ventilation filter element subjected to cement fixation treatment is reused, the waste treatment cost is reduced, and the waste volume reduction effect is effectively improved. The invention further provides a radioactive waste treatment system and a waste ventilation filter element crushing and packaging system.

To provide a cement hardened body capable of efficiently suppressing release of ammonia gas contained therein.SOLUTION: A cement hardened body comprises a hardened body of a hardening cement composition containing cement, water, a fine aggregate, a coarse aggregate, and biochar. A biochar content is 1 kg / m3 or more and 200 kg / m3 or less, and an unevenness index of biochar in a cross section of the cement hardened body, calculated by the following analysis method, is 100% or less. An analysis method includes: converting the cross section of the cement hardened body into a biochar extraction image obtained by extracting the biochar by image analysis; dividing the biochar extraction image into N equal areas and shapes (where N is a natural number of 2 or greater); and calculating the area ratio of biochar within each divided biochar extraction image. An average and standard deviation of the numerical values of the area ratios (N values) are used for calculating the biochar heterogeneity index in the cross section of the cement hardened body, expressed as a variability index UCV defined by a specific formula.SELECTED DRAWING: None

The utility model discloses a spherical die which comprises two top dies 105 which are vertically symmetrical, each top die 105 is fixedly connected with a positioning block 108, three first side dies 102 which are distributed in a circumferential array mode are arranged between the two top dies 105, a second side die 103 is arranged between every two first side dies 102, and the two first side dies 102 are attached through an outer attaching groove 112 and an inner attaching groove 111. The two top dies 105 are matched to form a complete spherical cavity 114, the positioning blocks 108 are clamped into the positioning grooves 110, all the first side dies 102 and all the second side dies 103 are fixed, and therefore cement balls are poured, and after the inner attaching grooves in the upper sides of the first side dies can be attached to the clamping grooves in the second side dies, the first side dies 102 and the second side dies 103 can be fixed. According to the cement ball forming mold, the positioning blocks on the top mold are matched to be clamped into the positioning grooves of the first side mold and the second side mold, so that the closed spherical cavity is formed, cement is poured into the spherical cavity through the pouring pipe, after cement is fixed, the top mold on the upper side and all the first side mold and the second side mold are taken down, and a cement ball can be obtained, efficiency is high, and the number of process steps is small.

The present invention relates to retardant compositions that include copolymer(s) of carboxylic and / or dicarboxylic monomers, to be mixed with cement ingredients, preferably CSA cement, to form a cement composition that hardens over a longer period of time than traditional CSA cement setting times.

The present invention relates to retardant compositions that include copolymer(s) of carboxylic and / or dicarboxylic monomers, to be mixed with cement ingredients, preferably CSA cement, to form a cement composition that hardens over a longer period of time than traditional CSA cement setting times.

The utility model relates to the field of buildings, in particular to an insulation board module which comprises an insulation board and a decorative board, a connecting support is embedded in the insulation board, the connecting support is fixedly connected to the decorative board through an expansion screw I, the connecting support is fixedly connected to a connecting seat through a connecting nail, a cushion block is arranged between the connecting seat and the connecting support, and the cushion block is fixedly connected to the decorative board through an expansion screw II. The connecting base is connected to the wall through expansion screws II, one side of the heat preservation plate is bonded to the decoration plate, and the other side of the heat preservation plate is fixedly connected to the wall through cement. Thermal insulation isolation between the thermal insulation board and the connecting base can be completed, and the thermal insulation effect of the thermal insulation board is guaranteed.

An orthopedic augment (100) can be used where the patient's bone at an implantation site is structurally compromised to aid in securing the orthopedic prothesis at the implantation site. The orthopedic augment has, on an internal surface (2) thereof, cement fixation features (3) that receive an orthopedic cement therein and aid in resisting separation of the orthopedic prosthesis from the orthopedic augment. In addition, the orthopedic augment may include mechanical fixation mechanisms to engage the orthopedic prosthesis. Thus arranged, the orthopedic augment provides greater flexibility, in that it can be used in the form of a cone (e.g., cemented fixation) or a sleeve (e.g., mechanical fixation).

The invention relates to a method for performing downhole remedial cementing operations. A module with hydraulic cylinders is installed at a wellhead and then lowered into the wellbore, said module being mounted on a tubing string and being connected to a plug-packer having a fixed mandrel and movable parts. When a given depth is reached, excess pressure is generated in the tubing, causing the hydraulic cylinders to move downwards in relation to the fixed mandrel and to apply a force to the movable parts of the plug-packer. Next, a module with hydraulic cylinders and a cementing retainer-packer having a fixed mandrel and movable parts is lowered on the tubing. When a given depth is reached, excess pressure is generated in the tubing, causing the hydraulic cylinders to move downwards in relation to the fixed mandrel and to apply a force to the movable parts of the cementing retainer-packer. Next, via the installed cementing retainer-packer, a sealing material in the form of a cement composition is introduced under pressure with the guaranteed penetration thereof into holes made by a perforator. The result is an increase in the efficiency, versatility and safety with which downhole remedial cementing operations are performed.

The embodiment of the invention provides a servicing container and a servicing method, the servicing container is used for containing radioactive solid waste, and the servicing container comprises an outer barrel, a lining, a supporting frame and a first cement fixing body. The lining is provided with a containing cavity, the containing cavity is used for containing the radioactive solid waste, the lining is arranged in the outer barrel, and at least part of the area of the lining and the outer barrel are spaced to form an interval space. The supporting frame is arranged in the interval space and connected with the outer barrel and the lining. A first cement fixing body is arranged in the interval space so as to wrap the lining. The reconditioning container provided by the embodiment of the invention can improve the disposal effect on the radioactive solid waste.

The present invention relates to a high-salt mine water reinjection device for a coal mine, comprising an injection wellbore; a cement fixed well, which is arranged in the injection wellbore; an open casing, which is fixedly arranged in the cement fixed well; an injection pipe, which is inserted in the open casing; a packer, which is provided with a sealing sliding at the lower end of the annulus cavity; an annulus liquid filling device; and a high-pressure water inlet device. A method for treating high-salt mine water in a coal mine, using the above-mentioned reinjection device, comprises the following steps: a high-pressure water inlet device transports high-salt mine water from the coal mine to the bare hole section, and the high-salt mine water from the coal mine is injected into the injection layer through the small holes in the hole wall under the action of pressure and continuously migrates to the depth; the annulus liquid filling device transmits the water pressure in the annulus cavity through the packer, and automatically controls the plunger pump to add water according to the pressure change to prevent the intrusion of mine water due to leakage. The high-salt mine water is blocked by multiple isolation layers and stored in the ground injection layer.

The utility model relates to the field of street columns, in particular to a connecting structure for street column installation. The technical problems that in the installation process of an existing street column, the lower end of the street column is usually directly buried into a road surface through cement, due to the installation mode, after the street column is damaged, part of residues at the lower end of the street column are fixed by the cement to form a road surface protrusion, and certain potential safety hazards are caused to pedestrians are solved. According to the technical scheme, the connecting structure for street column installation comprises a street column body, a base assembly and a connecting assembly. Through the combination of the burying seat and the connecting slot, when a worker installs the street column, the burying seat can be buried into the ground in advance, so that when the street column is installed, a connecting inserting shaft of the connecting assembly is inserted into the connecting slot for quick installation.

The utility model relates to the technical field of medical instruments, in particular to a bone cement fixing type double-acting acetabular prosthesis which comprises a bone cement fixing type double-acting acetabular cup and a double-acting lining, and the bone cement fixing type double-acting acetabular cup comprises a bone cement fixing type double-acting acetabular cup body, an inner surface coating, an outer surface coating and a bone cement layer. Grooves are formed in the outer surface of the bone cement fixing type double-acting acetabular cup body, the inner surface coating is a polished surface coated on the inner surface of the bone cement fixing type double-acting acetabular cup body, and the bone cement layer is coated on the outer surface coating. The double-acting lining is placed in the bone cement fixing type double-acting acetabular cup body, and the outer surface of the double-acting lining is matched with a coating on the inner surface of the bone cement fixing type double-acting acetabular cup. The medical instrument prosthesis provided by the utility model is large in motion range, low in dislocation risk, and strong in temporary stability and long-term stability after being implanted.

A system and method for a urethane cement retainer. A urethane cement retainer has various components. When these various components comprise urethane where feasible, or a drillable metal, the retainer can be easily placed and quickly drilled if necessary.

A system and method for a composite cement retainer. A composite cement retainer has various components. When these various components comprise composite where feasible, or a drillable metal, the retainer can be easily placed and quickly drilled if necessary.

The utility model relates to the technical field of building construction, in particular to a cement fixing plate combined part. According to the technical scheme, the connecting structure comprises a main body matching connecting base made of metal materials, integral installation fastening plates which are integrally formed and symmetrically distributed are arranged at the lower end of the main body matching connecting base in the front-back direction, and a first combined connecting groove with an upward opening is formed in the upper end of the left side of the main body matching connecting base; the right side of the main body matching connecting base is provided with a second matching connecting groove which completely penetrates through the lower end and the front-back direction, and the front position and the back position of the first combination connecting groove are each provided with a U-shaped combination limiting stabilizing groove with an opening facing the left side. The fixing plate has the advantages that the fixing plates can be combined in a staggered mode from different directions, the combination efficiency during connection can be improved, the fastening strength during matching can be guaranteed, meanwhile, the safety of the whole fixing plate is better during use, and the splicing and matching requirements of various fixing plates at complex positions can be met.

A color-adjustable repairing agent and a preparation method therefor, and concrete containing the repairing agent are disclosed in the present invention; the repairing agent is a mixture of microbial powder, dopamine and a calcium source immobilized by cement; and according to total mass of the mixture, a mass percentage of the microbial powder is 44%-54%, a mass percentage of the dopamine is 1%-5%, and a mass percentage of the calcium source is 44%-54%; according to the present invention, dopamine is mixed into a microbial self-repairing agent, a cement-immobilized microbial self-repairing agent is used for preparing repairing agent particles, a crack area of microbial self-repairing concrete is repaired, and repairing performance of the concrete and a color of a repairing product of the crack area are tested.

The utility model relates to corner polishing equipment for cement product processing. The corner polishing equipment comprises a top plate with a leakage groove. The ring body is arranged at the top of the top plate; the cement product needing to be polished is placed on a table top, two electric push rods are started to drive a push plate to move, cement is fixed between the push plate and an abutting plate, a third motor is started to drive driving teeth to rotate, the driving teeth are meshed with a toothed ring part, and therefore the ring body is driven to rotate; the grinding device can be controlled to rotate and adjust in the horizontal direction, a second motor is started to drive a threaded rod to rotate, the surface of the threaded rod and the interior of a sliding base are in threaded installation, the grinding device at the bottom of a column is controlled to slide in the horizontal direction, and dead-corner-free movement of the grinding device in the horizontal direction is achieved; the angle of the polisher can be rotationally adjusted, the four air cylinders are synchronous air cylinders, height adjustment of the polisher is achieved, and more polishing angles on the surface of the cement product are achieved.

The utility model relates to the technical field of damping devices, in particular to a modular assembly type ground damping device which comprises assembly plates laid on the ground, every two front-back adjacent assembly plates are connected through a first connecting plate, every two left-right adjacent assembly plates are connected through a second connecting plate, and a damping floor is arranged at the tops of the assembly plates. The top of the assembly plate is provided with four circular slots arranged in a matrix, and the bottom of the damping floor is provided with four circular iron blocks arranged in a matrix. According to the modular assembly type ground damping device, the modular design allows quick mounting and dismounting under the condition that traditional cement is not used for fixing. The assembling plates are connected together by using the first connecting plate and the second connecting plate, so that the mounting complexity is reduced, and the mounting time is shortened. When damaged parts are replaced, only specific modules need to be disassembled, overall disassembly is not needed, damage to the ground is avoided, and the damping floor can be easily disassembled and assembled through the design of the circular inserting grooves and the circular iron blocks.

The utility model relates to an assembly type wall which comprises a prefabricated cement wall and an assembly wall, the assembly wall is arranged in front of the cement wall, the assembly wall comprises a main wall body and trimming strips arranged at the two ends of the main wall body, the main wall body comprises a plurality of brick layers sequentially arranged from bottom to top, and each brick layer comprises a plurality of brick bodies sequentially arranged in the horizontal direction; the bottom brick layer is fixed to the ground through cement, and brick bodies on the adjacent brick layers are arranged in a staggered mode. A fixing part is arranged on the brick body and comprises a fixing plate and a fixing column arranged on the fixing plate, the fixing plate is flush with the bottom surface of the brick body, the fixing column protrudes out of the top surface of the brick body, and a fixing groove for fixing the fixing column is formed in the bottom surface of the fixing plate; a thermal insulation layer is arranged between the assembly wall and the prefabricated cement wall; locking protrusions are arranged on the top faces of the fixing columns and contained in the fixing grooves so that the fixing columns and the fixing plates can be fixed, and therefore the upper layer brick body and the lower layer brick body can be fixed. The wall forming device has the effects that forming is convenient, and the time needed for wall forming is short.

A scraping tool for well plug and abandonment operations is provided by affixing a scraping tool to an outer diameter of a work string; advancing the work string to a first predetermined depth in a wellbore of a well; retracting the scraping tool to a second predetermined depth in the wellbore further uphole than the first predetermined depth; setting a cement retainer and injecting a sealing medium through the work string into the wellbore at the first predetermined depth to plug the well. In some cases, the scraping tool is detached with a cement retainer from the work string, while down bore; and the work string (without the scraping tool affixed thereto) is removed from the wellbore.

The invention belongs to the technical field of nuclear waste treatment, and particularly relates to a cement fixing material and application thereof in fixing radioactive solid waste. The cement fixing material provided by the invention comprises the following components in parts by weight: 20-46 parts of a cementing material; 39 to 55 parts of fine aggregate; 5-25 parts of a mineral admixture; 0.2 to 0.7 part of a functional auxiliary agent; the cementing material comprises Portland cement and sulphoaluminate cement, the fine aggregate comprises sand, the mineral admixture comprises slag, metakaolin and fly ash, the functional auxiliary agent comprises a water reducing agent, a retarder, a thickening agent, a waterproof agent and a volume stabilizer, and the volume stabilizer comprises anion exchange resin powder and / or sulfamic acid. The cement fixing material provided by the invention not only meets the current national standard when being used for fixing radioactive wastes, but also has the characteristics of long service life, safety and reliability; and meanwhile, good operability performance is achieved.

A wellhead assembly (Fig.1 100) comprising: a foundation (Fig.1 101) having at least one well slot (Fig.1 200); the well slot comprising a receptacle 102 having an internal profile (Fig.3 103) for holding a well pipe (Fig.2 201); a sleeve 110 arranged in the receptacle; wherein the sleeve is vertically movable and has a top end 111 which in a first position is located above the internal profile and in a second position is located below the internal profile. Also provided is a method of installing a wellhead assembly at a seabed 130, wherein the foundation is lowered to the seabed, the sleeve is lowered into the well slot below the surface of the seabed, and a casing is inserted into the sleeve. The casing is then cemented to the sleeve to fix it in place. The sleeve of the present invention supports and guides the inserted casing, and prevents loose sediment near the seabed surface from being disturbed during cementing.

The utility model relates to a waterproof outer wall for a construction project. The waterproof outer wall comprises an inner wall body, a thermal insulation layer and an outer wallboard, the heat preservation layer is formed by arranging a plurality of heat preservation units in a matrix mode, and 1 / 4 circular inserting grooves are formed in the four corners of each heat preservation unit. The length and the width of each external wall panel are the same as those of each thermal insulation unit, and an anchoring pipe is fixed to the center of the diagonal line of the inner surface of each external wall panel and fixed in the corresponding inserting groove; air holes are formed in the outer surface of the outer wallboard and penetrate through the outer wallboard to be communicated with the anchoring pipe. The anchoring pipes on the external wall panel penetrate through the inserting grooves and are fixed to the internal wall body through cement, the firmness degree is far larger than that of glue bonding, and therefore the accident that the anchoring pipes and the heat preservation layer are peeled off together can be reduced. The external wall panel and the thermal insulation layer are installed in a staggered mode, the external wall panel covers the joint of the thermal insulation layer, and the downward-inclined joint is formed through the inclined face of the external wall panel, so that rainwater is difficult to enter or remain in the joint, and the waterproofness of the external wall is improved.

The utility model relates to socket quick -mounting technical field, concretely relates to a quick -mounting integrated socket assembly. It includes socket casing, the both sides of socket casing are close to the rectangular hole of the middle position and are equipped with the connecting plate of rectangular hole top side fixed connection, is provided with two fixed components in socket casing, and the fixed component includes two connecting blocks, and two connecting blocks fixedly connect in socket casing one side inner wall. The utility model since socket is fixed in the wall body through cement, leads to in the socket maintenance difficulty and the replacement difficulty, through the setting up two flat angle screws drive two sliding strips to carry out vertical movement, then by sliding strip through two guide posts drive extruding plate to rotate between two connecting blocks, can make two extruding plates to the wall body extrude, makes socket casing fixed in the wall body, to be able to avoid using cement to fix socket, further can solve the socket maintenance and the replacement difficult problem.

The present invention discloses an installation structure for pre-embedded anchor bolts of a circular tube column, comprising a supporting circular plate; a supporting tube, the supporting tube is fixedly arranged in the center of the supporting circular plate; a bolt pre-embedded mechanism, a plurality of bolt pre-embedded mechanisms are installed on the supporting circular plate, and the bolt pre-embedded mechanism is used to connect the circular tube column to the ground. The present invention pre-embeds the bolts in cement, and when the cement has not yet hardened, the bolts are intermittently rotated up and down by intermittent slow forward and reverse rotation driven by a motor, so that the bolts can be intermittently rotated up and down, which can prevent the bolts from being fixed together with the cement after the cement hardens, and on the other hand, can make the bolts drill holes in the cement, and form threaded grooves on the inner wall of the holes to form threaded holes, so that after the cement hardens, the bolts can be threadedly connected with the cement, and when the bolts need to be removed, the bolts can be rotated.

The utility model belongs to the technical field of noise monitors, and particularly relates to a stably-installed outdoor environment noise monitor which comprises a cement fixing base, an insertion box is arranged on the inner wall of the bottom of the cement fixing base, a connecting box is fixedly installed on the top of the insertion box, an installation frame is arranged above the connecting box, and a fixing frame is arranged on the installation frame. A noise monitor main body is fixedly mounted at the top of the mounting frame, an insertion box is placed in a groove body above the cement fixing base, the mounting frame is inserted into the inner side of a connecting box through a first insertion block, and at the moment, a knob can be controlled to drive a one-way screw rod to rotate; the one-way lead screw can drive the movable shaft to rotate through cooperation of the synchronous wheel and the synchronous belt after rotating, the movable shaft can drive the two-way lead screw to rotate through the bevel gear after rotating, the two-way lead screw drives the movable clamping blocks on the two sides to slide into the inner side of the clamping groove through thread fit after rotating, and the insertion box can be fixed conveniently and rapidly.

The utility model relates to benthic animal sampling device field, concretely relates to a sampling device suitable for large benthic invertebrate investigation in flood period, including cement fixed base, drift net and buoy. The cement fixed base is made of hollow brick irrigation cement, its top surface central fixed has annular steel ring, and the edge is fixed with support rod, the drift net includes square net frame and net bag, and is fixed in the base side through support rod, the buoy is connected with the annular steel ring of base through the rope. The utility model discloses the self -weight of cement base resists the impact of water flow, solves the problem that the existing drift net is prone to lodging in flood period, and cannot be used in hard riverbed, and through the cooperation of buoy and rope, realizes the quick positioning and recovery in deep water environment, and the device is simple in structure, stable and reliable, and has wide bottom quality adaptability, and is suitable for benthic animal sampling in flood period, various bottom quality and complex water flow conditions.

The invention discloses a method, a device and a product for preparing a metal prosthesis for articular surface cartilage defect, which are characterized in that on the basis of the traditional metal prosthesis, an embedding anchoring part is additionally arranged between the contact surfaces of the metal prosthesis and a patient joint, so that the connection between the metal prosthesis and the patient joint is reinforced through the embedding anchoring part; meanwhile, the 3D printing technology is used for machining the metal prosthesis with the high complex structure, in this way, the machining precision can be guaranteed, and therefore the embedded anchoring part obtained through machining can be better attached to the joint; therefore, the non-cement fixing effect of the prosthesis corresponding to the cartilage defect surface in the artificial hip joint and the knee joint can be improved, so that the method is very suitable for large-scale application and popularization in the field of joint replacement.

An assembly (2) for use in abandoning a wellbore comprises at least one perforating apparatus (4) operable to mechanically cut perforations in a wellbore casing and a cement retainer deployment assembly (6) comprising a mandrel (10) configured to slidably receive at least one cement retainer assembly (8), wherein said mandrel (10) is configured to deploy the cement retainer assembly (8) in the wellbore. The mandrel (10) comprises a longitudinal bore (16) to enable cement or another sealing material to be pumped through the cement retainer assembly (8). Mandrel (10) has a non-circular portion (10a) formed along a part of its length and a circular portion (10b) at its end.