35results about How to "Effective displacement" patented technology

A truss supporting technology for controlling ingredient top slope deformation is adapted for controlling the sinkage of wide span alley way top board separation layer, the top board and alley slope shear-slip breakaway or controlling the deformation of alley slope part. When using an anchor rod anchorage cable support for ingredient top board or alley slope part, plural trusses composed of two steel twist lines and double hole steel bushing coupler is set on the ingredient top board or alley slope part with spaces for support, each truss is shielded under the anchor solid, two steel twist lines are connected and locked by the coupler to form expansion and pull force to generate extrusion and protection function for the ally way top board or slope part. Not only the problem that the sinkage of the wide span alley way top board separation layer and the top board and alley slope shear-slip breakaway is solved, the top board is supported effectively, but also the displacement of the alley slope towards to alley inside is controlled, thereby the deformation of the alley slope is reduced, so the alley way can satisfy production requirement. In addition, the connection of the support whole body between the steel twist lines is adopted to change the limit of single anchorage cable support. The structure is simple, convenient in use and has broad practicability.

To provide an optical unit that has image stabilization functionality, wherein even if a movable module is pivotably supported at a point partway down said movable module in the direction of the optical axis, the center of gravity of the movable module in the direction of the optical axis can be effectively moved closer to the point at which the movable module is supported. In this optical unit (100), a gimbal mechanism (30) (support mechanism) pivotably supports a movable module (10) at a point partway down said movable module (10) in a Z-axis direction. The movable module (10) comprises an optical module (1) and a weight (5). The optical module (1) holds a lens (1a), and the weight (5) is attached to the front end (1c) of the optical module (1) in the direction of the optical axis (L). The center of gravity of the movable module (10) in the direction of the optical axis (L) can thus be shifted from the location of the center of gravity of the optical module (1) towards the point at which the gimbal (30) supports the movable module (10). The front end surface (51a) of the weight (5) in the direction of the optical axis (L) is flat and perpendicular to the optical axis (L).

The invention relates to bridging leaking stoppage slurry and a preparation method thereof, and belongs to the field of petroleum drilling leaking stoppage. The bridging leaking stoppage slurry is prepared from the following components in parts by weight: 100 parts of water, 1-3 parts of gel, 4-15 parts of an inorganic granular material, 2-8 parts of a plant hard shell material, 0.5-5 parts of petroleum-swelling resin, 1-4 parts of mineral fibers, 1-4 parts of a flaky material, and 4-10 parts of a powder material. The leaking stoppage slurry is prepared from the gel and a bridging material, and the gel has the characteristics that a cross-linking reaction can be carried out at a high temperature, and the viscosity is quickly increased; the adopted bridging material has the characteristicsthat the particle diameter of particles is reasonable, and a leaking channel can be effectively blocked; by cooperating with bentonite slurry, the leaking stoppage slurry can effectively block a leaking layer, with asphalt cracks, of 1-5 mm, asphalt can be effectively displaced, the displacement rate of the asphalt reaches 80% or above, a blocked layer with the strength being lager than 8 MPa is formed, and temperature resistance reaches 120 DEG C or above; and the preparation method is simple, and on-site operating is easy.

The invention discloses a roadbed interior part layer deformation real-time monitoring system and a mounting method thereof. The roadbed interior part layer deformation real-time monitoring system comprises a sedimentation cap, a surface protective cover, a sedimentation plate, hoses, carbon fiber rods, clamping ring bases, lead wires and displacement sensors; the upper end of the sedimentation cap is provided with the surface protective cover, and the lower end is connected with the sedimentation plate; the sedimentation plate is provided with a plurality of displacement sensors; a probe of each displacement sensor extends out of the sedimentation cap; the lead wires of the displacement sensors are led out from the wing edge of the sedimentation cap; each hose sleeves outside the corresponding lead wire; the lower ends of the displacement sensors are connected with a plurality of carbon fiber rods respectively; the carbon fiber rods are arranged in parallel, and the lengths of the carbon fiber rods are sequentially increased; the bottom end of the longest carbon fiber rod is connected to an anchoring end arranged in a roadbed drill hole in a threaded manner; the clamping ring bases are arranged on the carbon fiber rods at an interval; and a corrugated pipe is arranged between two adjacent clamping ring bases to accommodate the corresponding carbon fiber rod. The roadbed interior part layer deformation real-time monitoring system provided by the invention can measure the rigidities of soils with a plurality of depths and reduce the measurement time and cost.

The invention provides a method for improving the oil recovery rate by water injection with small pressure difference at multiple distribution points. The method for improving the oil recovery rate bythe water injection with the small pressure difference at the multiple distribution points comprises the steps that 1, an injection-production well group is selected; 2, the conceptual model of one-injection-two-recovery is established by numerical simulation, a P1 well and a P2 well are included, and quantitative research and analysis are carried out on production and injection proration; 3, inthe case of fixed water injection rate of the wells, the reasonable fluid amount of before water breakthrough is optimized; 4, the optimized fluid amount after the water breakthrough is calculated; 5,the water injection rate of the wells is reset, and the reasonable fluid production rate of the P1 well and the P2 well is optimized. According to the method for improving the oil recovery rate by the water injection with the small pressure difference at the multiple distribution points, effective displacement is expanded, every water injection interval exerts maximum potential, at the same time,the formation energy can be reasonably replenished, broad prospects in application popularization are achieved, and significant economic and social benefits can be obtained.

The invention relates to a power generating device, and provides a human gait energy-conversion power generating device which is free of maintenance, is low in cost, is safe and environmentally-friendly, can automatically acquire human gait energy and can convert the human gait energy into current, and provides energy to wearable power consumption equipment. The human gait energy-conversion power generating device comprises a housing, an electromagnetic induction coil arranged in the housing, permanent magnets and a rectifying buffer chip connected with the electromagnetic induction coil; the permanent magnets comprise a positioning permanent magnet and a suspending permanent magnet; a central guide rail is arranged on the housing; the positioning permanent magnet is arranged at the fixed end of the central guide rail in a sleeved mode; the suspending permanent magnet is arranged at the free end of the central guide rail in the sleeved mode; the opposite surfaces of the positioning permanent magnet and the suspending permanent magnet are magnetic surfaces; through the positioning permanent magnet, the suspending permanent magnet is suspended at the free end of the central guide rail; when the suspending permanent magnet has vibration, the suspending permanent magnet can move up and down along the central guide rail; and the suspending permanent magnet is positioned in the electromagnetic induction coil.

The invention provides a method for improving the oil displacement efficiency of a medium and low water-containing oil field. Crude oil in the medium and low water-containing oil field is displaced and recovered by using a cocamidopropyl betaine solution. The method of the medium and low water-containing oil field includes the following steps that first, the cocamidopropyl betaine solution is prepared; second, preparatory work before the cocamidopropyl betaine solution is injected into an oil well is conducted; third, the cocamidopropyl betaine solution is injected into the oil well; fourth, clear water is injected in the forward direction, the cocamidopropyl betaine solution is driven and covered to an oil displacement area, and the well is shut in to wait for condensation; fifth, the clear water is alternately injected in the forward and reverse directions, after multiple cycles, the oil is washed back to drive into the oil well, and the water quality at an inlet and an outlet is consistent; sixth, oil well water absorption profile testing is conducted; and seventh, the step two to the step six are successively repeated until the crude oil in the oil well is recovered after multiple times of circulation. An oil recovery method can reduce the water injection pressure of the medium and low water-containing oil field, increase the output of the crude oil, and thus improve the oil displacement efficiency.

The invention provides a recovering method for improving the substrate and microfracture oil flooding efficiency in dual medium reservoir gas injection. The method comprises the following steps of: designing gas injection wells and production wells into the same target reservoir, wherein the gas injection wells and the production wells have one-to-one correspondence or one-to-multiple correspondence relationship; and then, injecting gas into the gas injection wells for recovery. The method has the advantages that the goal of effectively using rest oil in substrates and microfractures after the oil reservoir water flooding is achieved; the requirement of improving the oil flooding efficiency of the substrates and the microfractures is met; the single-well recoverable reserve scale is increased; the new well drilling investment cost is reduced; the existing underground resources can be well used; and the recovery utilization rate of the resources is improved.

The invention provides a foam stabilizer for nitrogen foam combination flooding, a foam composition, an oil extraction method and application. The foam stabilizer includes the following raw materials: polyanionic cellulose, agar powder, beta-cyclodextrin, sodium tripolyphosphate and triethanolamine, with a mass ratio of (50-65):(5-10):(2-5):(3-6):(1-5). The foam composition includes the following raw materials: 0.2-0.5wt% of sodium alpha-olefin sulfonate, 0.1-0.3wt% of sodium lauryl sulfate, and 0.01-0.12wt% of a foam stabilizer and the balance of water. The method for preparing the foam composition is as follows: mixing the raw materials, stirring at 60-90 DEG C for 20-35 minutes, and cooling. The oil extraction method is as follows: injecting the foam composition and nitrogen into the target oil layer in a synchronous or alternating manner. The foam stabilizer provided by the invention can solve the problems that when the nitrogen foam combination flooding is applied to fractured reservoir with deep edge and bottom water, the temperature resistance of the foam system is poor, the foam is unstable, and the like.

The invention provides an oil extraction method for water controlling and oil increasing of a buried hill oil reservoir high-water-cut oil-producing well. The method comprises the following steps that 10, the high-water-cut oil-producing well is adopted as a target gas-injection well; 20, gas is injected into the target gas-injection well till the injected gas completes stratum bottom water displacement, and gas injection is stopped; 30, then, the target gas-injection well is adopted as a production well, and oil extraction production is performed. Gas is injected into the high-water-cut oil-producing well, the gas can achieve effective stratum bottom water displacement, bottom water is restrained from coning upwards, meanwhile, the injected gas can also enter an oil reservoir matrix, crude oil in the matrix and crude oil in tiny cracks are effectively displaced, water seal of the crude oil is relieved, the reservoir stratum working degree is improved, and therefore the water controlling and oil increasing effects are achieved.

The invention discloses a sweepforward front edge type side plate structure matched with a binary supersonic air inlet channel. The sweepforward front edge type side plate structure comprises a side plate, wherein the section of the side plate is defined by an upper wing contour line, a rear edge contour line, a lower wing contour line and a front edge contour line which are connected end to end;the upper wing contour line, the rear edge contour line and the lower wing contour line are determined by profile parameters of the air inlet channel; the front edge contour line has a sweepforward angle, and the lower side edge of the sweepforward angle coincides with a shock wave line generated by a last-stage compression inclined plate under the condition of the highest flight Mach number. According to the sweepforward front edge type side plate structure, the air inlet channel / airframe integrated design is considered, and the sweepforward front edge type side plate structure is used, thusthe transverse overflow effect caused by the transverse pressure gradient in front of a lip can be weakened, so that the flow capture coefficient is increased, further the transverse pressure difference between the compression inclined plate and the outer side of the machine body can be used for effectively moving a boundary layer of the airframe and the compression inclined plate, the total pressure of airflow captured by the air inlet channel is increased, the internal flow quality of the air inlet channel is improved, and the starting capacity of the air inlet channel is guaranteed.

The invention discloses a boiler bottom through-wall expansion joint. The boiler bottom through-wall expansion joint is used for pipeline through-wall heat insulation and displacement offsetting of awaste heat boiler bottom. The space between a connecting pipe and a heat insulation liner plate on the inner side is filled with a forth fixed heat insulation layer, and the connecting plate, the heatinsulation liner plate and the fourth fixed heat insulation layer are connected and fixed integrally through double-screw bolts. A third fixed heat insulation layer, a second fixed heat insulation layer and a first fixed heat insulation layer are sequentially stacked on the inner circle of the heat insulation liner plate, the positions are fixed through tightening steel belts, and the lower endsof the first fixed heat insulation layer, the second fixed heat insulation layer and the third fixed heat insulation layer stretch downwards to be placed on a tabletop of a frame at the lower end. Theupper end of an arched arc telescopic body and a first connecting sleeve are sleeved and surrounded and fastened through a first hoop, the lower end of the arched arc telescopic body and the frame are connected and fastened through a second hoop, and anti-falling rings are arranged at the joints of the upper end and the lower end of the telescopic body for axial position limiting. The boiler bottom through-wall expansion joint is used for waste heat boiler bottom through-wall connection, displacement generated by the waste heat boiler bottom due to high temperature is effectively absorbed, agood heat insulation function is achieved, and the accidents of cracking and even collapsing caused due to the fact that a wall is heated are avoided.

The invention provides preparation of a liquid metal composite flexible nano-tube and application thereof as a nano-motor. The problems that an existing method for synthesizing a micro-nano-motor is high in cost, troublesome in after-treatment, low in biocompatibility and low in experiment repetitive rate are solved. The method comprises the steps of 1, preparing magnetic nanoparticles; 2, assembling polyelectrolyte into a porous template layer by layer; 3, assembling the magnetic nanoparticles; 4, fixing liquid metal into the porous template; 5, removing the template to obtain the liquid metal composite flexible nano-tube. The liquid metal composite flexible nano-tube is adopted as the micro-nano-motor to be arranged in fluid, a periodically changing magnetic field is applied, the flexible and asymmetric structure of the liquid metal composite flexible nano-tube enables the liquid metal composite flexible nano-tube and fluid media to affect each other, and net motion of the motor in the long-axis direction is achieved; the prepared liquid metal composite flexible nano-tube has the wide application prospect in the fields of biomedicine, bionic design and the like.

The invention relates to a mud turning airing device. The device comprises a spiral float bowl, a scraper bucket, a ship body, an engine, a transmission mechanism and a digging bucket. The mud turningairing device has the benefits as follows: 1, when in use, the mud turning airing device can travel forwards or backwards in the mud or water along the axis of the spiral float bowl or in the direction being perpendicular to the axis of the spiral float bowl, and as functional accessories such as a push sholver and a digging hook are additionally arranged, the mud turning airing device can be extensively applied to the mud turning airing, drainage treatment, reservoir area emergency repairing fields and the like; and 2, when being applied to mud turning airing, the mud turning airing device can travel randomly in the tailings mud to cut through the tailings mud and help guide the flow of the tailings mud, can further prevent the tailings mud from crusting and turn the tailings mud to be aired, to be specific, the scraper bucket and the digging bucket are utilized to shovel, dig and rake the tailings mud to enable the tailings mud to be aired, solidified quickly and transferred effectively, so that not only are the construction and application of tailings mud storage areas greatly reduced, but also great disasters and loss caused by unexpected accidents of tailings mud ponds to theindustrial and agricultural production and downstream people's lives and properties are further reduced.

The invention relates to a self-adaptive separated layer water injection regulation and control valve. The regulation and control valve comprises a mounting short joint, wherein the outer side walls of two ends of the mounting short joint are provided with external threads, mechanical packers are respectively in threaded connection with two ends of the mounting short joint, four water injection valve bodies are symmetrically welded to the outer side walls of the mounting short joint, a semispherical cavity is formed in each water injection valve body, and the water injection valve bodies comprise pistons; four through holes are symmetrically formed in the outer side walls of the mounting short joint and are in positional correspondence with water inlet mouths, and the water injection valve bodies are communicated with the cavities of the mounting short joint; one end of a piston guiding track is welded to the middle of a base, the piston is in sleeved connection with the piston guiding track, a piston spring is arranged between the piston and the base and is in sleeved connection with the piston guiding track, and the sector of the piston is matched with the semispherical cavities; and threads are formed at the edges of the semispherical cavities of the water injection valve bodies, the edge of the base is provided with external threads, and the base is in threaded connection with the semispherical cavities.

The invention relates to a surfactant formulation system and its application in tertiary oil recovery technology. The surfactant formula system includes fatty amidoalkyl betaine, fatty alcohol polyoxyethylene ether and alkyl carboxylate. The surfactant formula system - polymer binary composite oil displacement system, does not need to add alkali, has no damage to the formation, and can form 10-3 ~ 10-4mN / m ultra-low interfacial tension, can effectively displace the remaining oil in the oil layer, and increase the oil recovery rate of crude oil by more than 18%.

The invention discloses a hypersonic bump compression profile inverse design method based on a curved cone precursor. The method comprises the following steps: 1) specifying a full-three-dimensional precursor shock wave curved surface according to the overall design requirement of a hypersonic aircraft; 2) dispersing the full-three-dimensional precursor shock wave curved surface into a series of precursor shock wave curves in a reference plane, and solving a corresponding flow field and a curved cone precursor compression surface by utilizing a bending shock wave theory; 3) taking an air inletlip as an input condition, and specifying a full-three-dimensional bump shock wave curved surface matched with the air inlet lip; wherein the intersecting line of the full-three-dimensional bump shock wave curved surface and the curved cone precursor compression surface obtained in the step 2) is the front edge profile line of the bump compression profile surface; and 4) dispersing the full-three-dimensional bump shock wave curved surface and the bump compression profile front edge molded line in a reference plane form, and solving by utilizing a bending shock wave theory to obtain a reference flow field and a bump compression profile line in the reference plane, and combining all the bump compression profile lines in the reference plane to obtain the hypersonic bulge compression profilebased on the curved cone precursor.

The invention discloses a muck truck intelligent dust sheltering shed which comprises sealing cloth covering the top of a muck truck compartment and connected with the muck truck compartment through astrop device. The strop device comprises pulleys arranged on two lateral sides of the sealing cloth, guide rails arranged on two sides of the compartment and corresponding to the pulleys and a motordriving the pulleys to slide, and the motor is in annular fixed connection with the rear end of the sealing cloth through a pull rope; a spraying pipeline is arranged at the rear end of the compartment and connected with a water tank through a water pump, and a dust sensor, a displacement sensor and a controller are arranged at the rear end of the compartment. Opening and closing of the sealing cloth can be controlled automatically, dust on a muck truck and displacement of the sealing cloth can be detected, starting and stopping of the water pump and the motor can be controlled according to concentration of the dust and the displacement of the sealing cloth, and automatic spraying and intelligent control on opening and closing of the sealing cloth are realized.

The invention discloses a welding device used for an automobile bumper. The welding device comprises a rectangular box body and a supporting device mounted at one end of the upper surface of the rectangular box body. A fixed device arranged above the supporting device and an auxiliary device arranged on the upper surface of the rectangular box body are further included in the welding device used for the automobile bumper. A controller is arranged on the side surface of the rectangular box body and is fixedly connected with the rectangular box body. A trolley handle is arranged at one end of the upper surface of the rectangular box body and is fixedly connected with the rectangular box body. A balancing weight is arranged in the rectangular box body and is fixedly connected with the rectangular box body. A storage battery is arranged in the rectangular box body and is fixedly connected with the rectangular box body. The welding device has the advantages of being simple in structure andhigh in practicality.

The invention discloses an old goaf coal bed gas ground extraction oxygen-consuming microorganism fire preventing and extinguishing system and method. The old goaf coal bed gas ground extraction oxygen-consuming microorganism fire preventing and extinguishing system and method are characterized in that microorganisms with high oxygen consumption and strong viability are cultured through a microorganism culture device, then an extraction pipe, a nitrogen injection pipe, a liquid extraction pipe and a culture solution injection pipe are put down through a multi-branch well, the microorganisms and nitrogen mixed air prepared by a nitrogen making device are injected into old goaf through the nitrogen injection pipe, a microorganism culture solution is injected into the old goaf through the culture solution injection pipeline, after 120 hours and after the oxygen content in the to-be-detected old goaf reaches 10% or below, mine well water and the microorganism culture solution are extracted through the liquid extraction pipe, and then coal bed gas is extracted through the extraction pipe; and in the extraction process, the content of index gas in the old goaf is monitored in real time through a sensor. According to the system, before the coal bed gas is extracted, the oxygen content in the old goaf is rapidly consumed through the high-oxygen-consumption microorganisms, so that coal oxidation spontaneous combustion or gas explosion accidents in the coal bed gas extraction process are effectively prevented, and therefore safe extraction of coal bed gas resources in the old goaf is achieved.

A knock-out plug having sections held together by a hinge along the top side. The knock-out plug can bend or fold along a crease in the bottom side when force is applied to the top side, or hinge side, of the plug. Conversely, force applied to the bottom side and peripheral wall of the knock-out plug tends to hold the sections together. When placed into the opening in an HSA, the edge of the opening and force of the soil against the bottom side during drilling keeps the plug in place and the sections intact. When desired, the knock-out plug can be hit or pounded on the top side, through the HSA channel which causes the plug to fold or bend and be released easily from the opening.

The invention discloses a multifunctional lithium battery solar energy street lamp. The solar street lamp comprises an intelligent movable adjusting and controlling device, mounting frames, a movablerod, a solar panel, a hook frame, a lampshade, an illuminating lamp and a fixing rod, the fixed rod is vertically installed on the upper side surface of the intelligent movable adjusting and controlling device and is formed an integrated structure in a welding mode, the movable rod is an extension of the vertical axis of the fixed rod, the movable rod and the fixed rod form an integrated structurethrough fitting installation, the mounting frames are located on the outer side surface of the movable rod and are formed an integrated structure with the movable rod through clearance fitting installation, the solar panel is positioned on the upper side surface of the movable rod and is fixedly connected with the movable rod. The solar street lamp can be adjusted according to the intensity of the solar light, so that the device can be rotated and adjusted the solar panel according to the movement of the sun, the device can effectively displacing and telescoping the rod body, and therefore the aim of enabling the device to be more intelligent is achieved.

The invention discloses a gas injection method in a thermal recovery process. The method comprises the following steps that step one, a plurality of well groups are divided according to the total wellnumber; step two, steam injection is simultaneously carried out on all the well groups; step three, nitrogen injection is conducted on all the well groups at the same time; step four, carbon dioxideinjection is simultaneously conducted on all the well groups; step five, thermal recovery profile control system injection is conducted on all the well groups at the same time; and step six, the stepstwo to five are repeated until the oil-steam ratio is lower than a set threshold value. By combining the action mechanisms of multiple injection media and the synergistic effect of huff and puff anddisplacement, a good effect of steam injection for thick oil development is achieved.

The invention provides a method for improving the oil displacement efficiency of medium and low water-cut oilfields. The crude oil in medium-low water-cut oilfields uses cocamidopropyl betaine solution to carry out oil displacement recovery, and the method for medium-low water-cut oilfields comprises the following steps: step 1. Cocamidopropyl betaine solution configuration; step 2, preparation before injection of cocamidopropyl betaine solution into the oil well; step 3, injecting cocamidopropyl betaine solution into the oil well; step 4, forward Inject clean water, drive and cover the cocamidopropyl betaine solution to the oil displacement area, shut down the well and wait for condensation; step 5, inject clean water alternately in forward and reverse directions, and after multiple cycles, backwash the oil flooding well to make the The outlet water quality is the same; Step 6, test the water absorption profile of the oil well; Step 7, repeat the above steps 2 to 6 in sequence, until the crude oil in the oil well is recovered after repeated cycles. The oil recovery method of the invention can reduce the water injection pressure of the medium-low water content oil field, increase the crude oil output, and further improve the oil displacement efficiency.

The invention discloses a downhole coal bed methane extraction method and liquid nitrogen flowing frost cracking devices used in the same. The method includes the steps that 1, liquid nitrogen injection drilled holes and reinforced extraction drilled holes are alternately formed in a coal bed; 2, the fixed liquid nitrogen flowing frost cracking devices are inserted into the liquid nitrogen injection drilled holes; 3, liquid nitrogen is continuously injected into the drilled holes through a liquid nitrogen inlet, and the liquid nitrogen which flows back from a liquid nitrogen outlet is receivedto form a liquid nitrogen flowing loop; 4, the internal temperature of the liquid nitrogen injected into the drilled holes is increased through cable heating, and the liquid nitrogen is rapidly gasified; 5, mixed gas of coal bed methane and the nitrogen is extracted through the reinforced extraction drilled holes. The structure and the method have the advantages that the extraction cost of the coal bed methane is low and the extraction rate is high.

The invention relates to the technical field of lawn trimming equipment, and discloses a walking type electric lawn mower for landscaping lawn repair. The walking type electric lawn mower comprises a rack, a driving mechanism is fixedly mounted at the top end of the rack, a walking wheel set is arranged outside the rack, a set of mounting plates is arranged on each of the two sides of the bottom end of the rack, and an output shaft of the driving mechanism is in transmission connection with a transmission shaft I through a coupler. According to the walking type electric lawn mower for landscaping lawn repair, a fixed support and a chip removal sliding groove in the fixed support are arranged, so that when the rack inclines due to potholes of a lawn, a transmission disc and a rotating component on the transmission disc can be supported in time, and the transmission disc and the rotating component cannot make contact with soil on the lawn due to inclination of the rack, therefore, roots of the lawn can be effectively protected, the roots of the lawn cannot be damaged and necrotic when the electric lawn mower is used for cutting and trimming the lawn, and the electric lawn mower is high in stability and reliability.

The invention discloses a practical test device for bearing capacity of shear parts, which includes a loading control device and a measurement and acquisition device; the loading control device includes a hydraulic traction bar, a steel strand and a guide wheel, and the measurement and acquisition device includes a horizontal acquisition unit and a Vertical acquisition unit; the horizontal acquisition unit includes pointers, guide rails, dial indicator and horizontal coordinate paper; the shear parts are provided with acquisition points. The guide rail is fixed on the top of the test bench or the additional steel plate along the horizontal direction, and is connected with the anti-corrosion The collection point of the cut piece corresponds, the pointer is set on the guide rail, the end of the pointer faces the collection point, and the contact of the dial gauge touches the end of the pointer; the vertical collection unit includes a vertical plate and a vertical coordinate paper; The vertical coordinate paper is set on the vertical plate; this test device provides a new detection method for measuring the ultimate shear bearing capacity and effective deformation of the shear parts. The data is more accurate, the practicability is strong, and the operation is convenient. A major innovation in the bearing capacity test.

The invention provides preparation of a liquid metal composite flexible nano-tube and application thereof as a nano-motor. The problems that an existing method for synthesizing a micro-nano-motor is high in cost, troublesome in after-treatment, low in biocompatibility and low in experiment repetitive rate are solved. The method comprises the steps of 1, preparing magnetic nanoparticles; 2, assembling polyelectrolyte into a porous template layer by layer; 3, assembling the magnetic nanoparticles; 4, fixing liquid metal into the porous template; 5, removing the template to obtain the liquid metal composite flexible nano-tube. The liquid metal composite flexible nano-tube is adopted as the micro-nano-motor to be arranged in fluid, a periodically changing magnetic field is applied, the flexible and asymmetric structure of the liquid metal composite flexible nano-tube enables the liquid metal composite flexible nano-tube and fluid media to affect each other, and net motion of the motor in the long-axis direction is achieved; the prepared liquid metal composite flexible nano-tube has the wide application prospect in the fields of biomedicine, bionic design and the like.

The invention belongs to the technical field of chemical oil displacement for improving the crude oil recovery rate, and particularly relates to a surfactant for oil displacement, a synthesis method of the surfactant and application of the surfactant in an oil displacement system. The nonionic-to-anionic surfactant is synthesized through acylation reaction, etherification reaction and carboxylation reaction. The molecular structure of the surfactant is scientific and reasonable in design, the lipophilic group is aliphatic hydrocarbon or cycloalkane and is connected with the hydrophilic group and the carboxyl group through an amido polyoxypropylene ether chain, and the balance of the lipophilic capacity and the hydrophilic capacity is adjustable. The non-anionic mixed surfactant is excellent in performance, and can exert good interfacial activity and excellent synergistic effect when being independently used in tertiary oil recovery or being compounded with nonionic, anionic and zwitterionic surfactants.

The invention relates to a bridging plugging slurry in the field of oil drilling plugging and a preparation method thereof. The bridging plugging slurry comprises the following components in parts by weight: 100 parts of water, 1 to 3 parts of gel, 4 to 15 parts of inorganic particle materials, 2 to 8 parts of plant-based hard shell materials, oil-swellable resin 0.5 to 5 parts, 1 to 4 parts of mineral fiber, 1 to 4 parts of sheet material, and 4 to 10 parts of powder material; Combined reaction, rapid thickening of viscosity; the bridging material used has a reasonable particle size, which can effectively seal the lost channel; combined with bentonite slurry, the plugging slurry can effectively seal the lost layer of asphalt-containing cracks of 1 to 5 mm , can effectively displace asphalt, the asphalt displacement rate reaches over 80%, and forms a plugging layer with a strength greater than 8MPa, and a temperature resistance of over 120°C; and the preparation method is simple and easy to operate on site.