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138 results about "Short radius" patented technology
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While a short radius is effective for LDPE, longer radii do a better job of stabilizing the thickness profile near the edges with polymers having lower melt strength. Kobelco's 55SRx is a 12,295 pound, 39 horsepower short radius machine that provides full-size performance.
Coronary sinus access catheter with forward-imaging
A coronary access catheter system simplifies the insertion of objects into distal branches of the coronary sinus. The system incorporates a real-time forward-imaging means to view the os and the branches of the coronary sinus. Preferably, the catheter uses near-infrared light as the forward-imaging means, but it could also include ultrasound or electromagnetic transducer. As the image is viewed, the catheter tip can be steered into the coronary sinus os and deflected in a tight radius bend on the distal end to navigate the short radius, right angle turns found in the coronary sinus branches. At that point, a flexible sheath can be placed over the guide catheter or objects such as guidewires can be inserted into channels of the guide catheter. The system consists of a catheter and image acquisition unit, which displays the forward image.
Owner:OLYMPUS CORP
Guidewire
A urological guidewire includes a core formed of a first metallic material and extending toward an end of the guidewire. A coil having a plurality of convolutions is disposed around the core at the end of the guidewire, the coil being formed of a second metallic material different than the first metallic material. A mechanical interlock is formed to inhibit separation of the different materials forming the coil and the core. The mechanical interlock may include an enlargement at the end of the core and a bonding material fixing the enlargement to the coil. The convolutions may include a penultimate convolution with a first radius of curvature and an ultimate convolution having a second, shorter radius of curvature to form a bridge. In this case, portions of the core can be bent back on themselves and directed over or around the bridge to form the mechanical interlock.
Owner:APPL MEDICAL RESOURCES CORP
Guidewire
InactiveUS20040127820A1Guide wiresDiagnostic recording/measuringMetallic materialsMechanical engineering
A urological guidewire includes a core formed of a first metallic material and extending toward an end of the guidewire. A coil having a plurality of convolutions is disposed around the core at the end of the guidewire, the coil being formed of a second metallic material different than the first metallic material. A mechanical interlock is formed to inhibit separation of the different materials forming the coil and the core. The mechanical interlock may include an enlargement at the end of the core and a bonding material fixing the enlargement to the coil. The convolutions may include a penultimate convolution with a first radius of curvature and an ultimate convolution having a second, shorter radius of curvature to form a bridge. In this case, portions of the core can be bent back on themselves and directed over or around the bridge to form the mechanical interlock.
Owner:APPL MEDICAL RESOURCES CORP
Guidewire
A urological guidewire includes a core formed of a first metallic material and extending toward an end of the guidewire. A coil having a plurality of convolutions is disposed around the core at the end of the guidewire, the coil being formed of a second metallic material different than the first metallic material. A mechanical interlock is formed to inhibit separation of the different materials forming the coil and the core. The mechanical interlock may include an enlargement at the end of the core and a bonding material fixing the enlargement to the coil. The convolutions may include a penultimate convolution with a first radius of curvature and an ultimate convolution having a second, shorter radius of curvature to form a bridge. In this case, portions of the core can be bent back on themselves and directed over or around the bridge to form the mechanical interlock.
Owner:APPL MEDICAL RESOURCES CORP
Automated loader
Owner:MCNEILUS TRUCK & MFG INC
Method apparatus and for hydraulic jet side drilling radial branching borehole
ActiveCN101429848AAccurate and convenient to fixEasy to fixLiquid/gas jet drillingDirectional drillingWell drillingMarket potential
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Method for forming a short-radius bend in flanged sheet metal member
One or more closed perimeter openings are formed in the compression area of a flange of a member that is to be bent transversely to the flange. The member is bent along a transverse bend line, and the flanges are bent inwardly on themselves. The bending of the member along the transverse bend line is done with a great force, and because portions of the side flanges are supported on their distal and proximal side, the material of the side flanges in the compression area plasticizes and flows into the closed perimeter opening, causing them to deform. Because the closed perimeter opening or openings are present, the side flanges are compressed in a more controlled manner, reducing cracking, wrinkling and thinning during the bending of the member along the transverse bend line.
Owner:SIMPSON STRONG TIE
Composite drill pipe and method of forming same
InactiveUS20090101328A1Supported degree of flexingSimple interfaceEarth drilling toolsDrilling rodsEngineeringScrew thread
A lightweight and durable drill pipe string capable of short radius drilling formed using a composite pipe segment formed to include tapered wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self aligning receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces and a set of nonconductive sleeves. The distal peripheries of the nested end pieces and sleeves are then welded to each other and the sandwiched and bonded portions are radially pinned. The composite segment may include imbedded conductive leads and the axial end portions of the end pieces are shaped to form a threaded joint with the next pipe assembly that includes contact rings in the opposed surfaces of the pipe joint assembly, the contact of which is effected by either piercing with a pointed contact from one end into the other to connect the corresponding leads across the joint or contacting opposed rings in each end.
Owner:ADVANCED COMPOSITE PRODS & TECH
Ultra-short radius radial horizontal well drilling, completion tool and technique thereof
InactiveCN101078335AEasy maintenanceHigh strengthDrilling rodsDirectional drillingCouplingWell drilling
Owner:BEIJING WANWEI YITONG TECHNOLOGICAL DEV
Drilling assembly with a steering device for coiled-tubing operations
Owner:BAKER HUGHES HLDG LLC
Method for forming a short-radius bend in flanged sheet metal member
InactiveUS6260402B1Reduce needLow tonnageMetal-working apparatusBuilding constructionsFlangeShort radius
One or more closed perimeter openings are formed in the compression area of a flange of a member that is to be bent transversely to the flange. The member is bent along a transverse bend line, and the flanges are bent inwardly on themselves. The bending of the member along the transverse bend line is done with a great force, and because portions of the side flanges are supported on their distal and proximal side, the material of the side flanges in the compression area plasticizes and flows into the closed perimeter opening, causing them to deform. Because the closed perimeter opening or openings are present, the side flanges are compressed in a more controlled manner, reducing cracking, wrinkling and thinning during the bending of the member along the transverse bend line.
Owner:SIMPSON STRONG TIE
Low head room overhead door system with adjustable short radius track section
InactiveUS7059379B2Maximize vertical clearanceBuilding braking devicesMan-operated mechanismDetentEngineering
A universal overhead door system includes a pair of horizontal track members, a pair of vertical track members and a pair of track radius members interconnecting the horizontal and vertical track members. A pair of adjustable short radius members extend from the track radius members to guide uppermost rollers of an overhead sectional door. The overhead door system includes a pair of stationary sheaves positioned outboard of a pair of horizontal support rails which support the horizontal track members. A detent is provided at one end of the adjustable radius members to prevent undesirable travel the garage door. A spacer is provided for use in extension spring configurations when a long horizontal support rail is required. The spacer prevents metal-to-metal contact of moveable sheaves with the horizontal support rails.
Owner:CLOPAY BUILDING PRODS
Chemically Enhanced Stimulation of oil/gas formations
ActiveUS7971658B2Increase temperatureIncrease flow resistanceDrilling rodsLiquid/gas jet drillingHigh rateWell drilling
Method is provided for drilling of formations containing carbonate minerals with flexible tubing capable of being turned in a very short radius. The very flexible tubing may be placed inside a work string in a well with coiled tubing and a micro-jet bit on the tubing be diverted to a selected direction and depth. Acidic drilling fluid pumped through the micro-jet bit allows high rates of drilling with hydrochloric acid. A slip joint between coiled tubing and the flexible tubing may be used to allow jet drilling without movement of the coiled tubing and use of a jet bit with forward-facing jets. Mixing of acid and base solutions downhole may be used to provide hotter acid solutions for drilling.
Owner:WV JET DRILLING LLC
System and method of displacing fluids in an annulus
The method of displacing fluids in the annulus between pressurized casing strings inside an active oil or gas well by providing a controlled turndown insert and guides then inserting and retrieving a flexible hose without it folding or buckling while being pushed or pulled through a wellhead system orifice with relatively sharp edges at the annulus opening where the hose must make a 90 degree turn from horizontal to vertical within a short radius without cutting, crimping or tearing the hose then seating and holding the hose while fluids are injected, all the while providing protection against well blow out or other pressure problems.
Owner:VETCO GRAY
Ultra-short radius radial well-drilling tool system
ActiveCN101748970AAvoid damageSimple construction processLiquid/gas jet drillingDirectional drillingBall bearingUpper joint
The invention relates to an ultra-short radius radial well-drilling tool system used for well drilling and completion operations in oil production and comprising a sleeve perforating system and a high-pressure ejection system. The ultra-short radius radial well-drilling tool system comprises a lifting joint, an elbow joint, an upper joint, a rotating joint, a thrust ball bearing, a single-row centripetal ball bearing, a base, a central tube, a sucker rod, an oil pipe, a screw rod, a high-pressure hose, an upper fixed joint, an upper joint of a universal joint, a rail groove, a universal joint, a shaft pin, a cruciform joint, a drill plate, a drilling tool joint, a drilling tool, a lower joint, a high-pressure nozzle and a locating anchor. The high-pressure ejection system comprises a ground high-pressure pump, the sucker rod, the high-pressure hose, the rail groove and the locating anchor. Firstly, the sleeve perforating system is used for drilling a hole with the diameter being not less than 25 mm in the wall of a sleeve at the design depth of an oil well; a pipe post of the sucker rod and a perforating cutter are brought out, connected with the high-pressure ejection system and taken into the well; and the high-pressure hose takes the high-pressure nozzle into the hole through the rail groove for high-pressure ejection. The well drilling system solves the problem that old wells increase oil draining area, and can be widely applied to oil well drilling and completion operations.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
A complex curved surface part point cloud reduction method capable of effectively keeping boundary and local features
ActiveCN106373118AEffectively preserve local featuresEffective reserve boundaryImage enhancementImage analysisPattern recognitionPoint cloud
The invention belongs to the technical field of precision machining and measurement, and discloses a complex curved surface part point cloud reduction method capable of effectively keeping boundary and local features. The method comprises the following steps: generating a scanned point cloud of a complex curved surface part; obtaining a plurality of neighborhood points for each point in the point cloud and calculating each normal line vector; finding out m points within the shortest radius range with each point being as the centre of sphere, and then, calculating the average value of included angles between the normal line vectors of the points in the point cloud and the normal line vectors of the m points; setting a threshold value based on the average value of included angles, and then, carrying out feature coarse classification; carrying out secondary subdivision to finish selection of a first reduction subset, and then, calculating directional Hausdorff distance to finish selection of a second reduction subset; and finally, merging the two reduction subsets to obtain a reduced scanned point cloud. Compared with the prior art, the method can achieve higher precision and efficiency, and can effectively keep the boundary and local features of the point cloud model.
Owner:HUAZHONG UNIV OF SCI & TECH
Oil exploitation super short radius horizontal drilling completion tool and process thereof
InactiveCN1464170ASimple construction processLower Drilling CostsDrilling rodsFluid removalPosition angleMilling cutter
The present invention relates to well drilling and completing technology and implement, and is one set of horizontal well drilling and completing technique and implement. The implement consists of drift diameter gauge, wrought milling cutter, positioning drilling bit, positioning angle building guide apparatus, drilling rod and other parts; and features the connection of the positioning drilling bit and the flexible drilling rod via toothed claw, flexible rod set inside the guiding and following sieve tube and the positioning angle building guide apparatus set in the front of the flexible rod. After finishing angle building and drilling, the flexible drilling rod is withdrawn to finish the horizontal well drilling and completion. With short well drilling period, low cost and high efficiency, the present invention may be used widely in oil production as well as coal and water supply industry.
Owner:PANJIN WWW DEVING SCI & TECH
Optical Turnaround
Fiber optic sensors commonly require a 180 degree turnaround to form a continuous optical circuit. Methods and apparatus for providing 180 degree turnarounds in a fiber optic system that include a shorter radius turnaround then provided by micro-bending the optic fiber are desired. An embodiment of a turnaround apparatus includes a first optic fiber pigtail, a second optic fiber pigtail, and an optical waveguide forming a U-shaped path having an input end optically connected to a first end of the first pigtail and an output end optically connected to a first end of the second pigtail.
Owner:SCHLUMBERGER TECH CORP
Tile nippers
InactiveUS20060248730A1Great compressive forceReduce transmissionPliersMetal working apparatusEngineeringMechanical engineering
Tile nippers are provided with hardened teeth formed with a short radius curvature extending from substantially flat interior shoulders configured to be substantially parallel when used for gripping and breaking tile. A compound leverage assembly connects the jaws of the tile nippers to the handles of the tile nippers. A retractable cutter or scoring wheel may be provided in a free end of a handle. A nail puller notch may be provided on a jaw of the tile nippers to allow the tile nippers to be used for gripping and pulling nails without damaging the tips of the teeth.
Owner:CUSTOM BUILDING PRODS
Method for well drilling and cementing of radial horizontal well with ultra-short radius and equipment thereof
InactiveCN101832105AAvoid damageHigh strengthFluid removalDirectional drillingUniversal jointWell drilling
The invention relates to a method for well drilling and cementing of a radial horizontal well with ultra-short radius and equipment thereof. A method of well drilling before well cementing is adopted and the method comprises the steps of: well drilling: universal joints are used to connect a plurality of flexible drill stems, a first-section flexible drill stem and an angle gain drilling head, an angle gain device is installed in a vertical well hole, and the upper surface of the device is a steering curved face inclined downwards; the flexible drill stems are made inclination on the steering curved face of the angle gain device, and the device is taken out of the well after well drilling; well cementing: a plurality of sections of flexible sleeves connected by hinged extension pipes are placed into the well hole for well cementing. Meanwhile, the minimum outside diameter of the angle gain drilling head is not less than that of the flexible drill stem, and the outside diameter of the flexible drill stem is not less than that of the flexible sleeve. The invention has the advantages that: the damage to sleeves is reduced; flexible sleeves are put in position for well cementing after well drilling, and therefore the strength of flexible sleeves is approximate to that of common sleeves; well drilling can not be affected even if small eccentricity occurs in the process of well drilling, and flexible drill stems can arch in reverse direction to avoid barriers when rubbing against well walls.
Owner:李孝勇
Ultra-short-radius radial lateral drilling method for horizontal wells
InactiveCN105064919AIncreased intensityHigh strengthDirectional drillingBorehole/well accessoriesHorizontal wellsWindow opening
The invention relates to an ultra-short-radius radial lateral drilling method for a horizontal well. Problems that in the existing horizontal well ultra-short-radius radial lateral drilling method, boreholes are irregular, a horizontal distance is short, cost is high, and safety is poor are solved. The ultra-short-radius radial lateral drilling method for horizontal wells is characterized by comprising the following steps of (1) borehole preparation, (2) whipstock tripping-in, (3) window opening, (4) deflecting flexible drill pipe tripping-in for deflecting, (5) open hole logging, (6) horizontal drilling, and (7) well completion. After a horizontal well is drilled by the method, a radius is small, a borehole is regular, a horizontal distance is long, drilling time is short, construction cost is low, and safety is high.
Owner:DAQING HENGDELI PETROLEUM TECH SERVICE
Chemically Enhanced Stimulation of Oil/Gas Formations
ActiveUS20090107678A1Increase temperatureImprove liquidityDrilling rodsLiquid/gas jet drillingHigh ratePetroleum
Method is provided for drilling of formations containing carbonate minerals with flexible tubing capable of being turned in a very short radius. The very flexible tubing may be placed inside a work string in a well with coiled tubing and a micro-jet bit on the tubing be diverted to a selected direction and depth. Acidic drilling fluid pumped through the micro-jet bit allows high rates of drilling with hydrochloric acid. A slip joint between coiled tubing and the flexible tubing may be used to allow jet drilling without movement of the coiled tubing and use of a jet bit with forward-facing jets. Mixing of acid and base solutions downhole may be used to provide hotter acid solutions for drilling.
Owner:WV JET DRILLING LLC
Coronary sinus access catheter with forward-imaging means
InactiveUS20090069694A1Less rotationUltrasonic/sonic/infrasonic diagnosticsSurgeryCoronary sinusTransducer
A coronary access catheter system simplifies the insertion of objects into distal branches of the coronary sinus. The system incorporates a real-time forward-imaging means to view the os and the branches of the coronary sinus. Preferably, the catheter uses near-infrared light as the forward-imaging means, but it could also include ultrasound or electromagnetic transducer. As the image is viewed, the catheter tip can be steered into the coronary sinus os and deflected in a tight radius bend on the distal end to navigate the short radius, right angle turns found in the coronary sinus branches. At that point, a flexible sheath can be placed over the guide catheter or objects such as guidewires can be inserted into channels of the guide catheter. The system consists of a catheter and image acquisition unit, which displays the forward image.
Owner:OLYMPUS CORP
Method for drilling horizontal well with super-short radius
ActiveCN102477845AHigh speedStrong controllabilityConstructionsLiquid/gas jet drillingWell drillingCoiled tubing
The invention provides a method for drilling a horizontal well with super-short radius, and the method is implemented by taking supercritical CO2 fluid as drilling fluid, and combining the supercritical CO2 fluid with a continuous oil pipe to carry out well drilling. In the invention, the supercritical CO2 fluid is introduced for assisting the continuous oil pipe in performing an action of drilling the horizontal well with super-short radius, so that the respective advantages of the supercritical CO2 fluid and the continuous oil pipe can be fully played.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Inflated elongation type pneumatic flexible actuator
ActiveCN101863030AImprove flexibilityHigh affinityChiropractic devicesManipulatorElastomerConductor Coil
The invention discloses an inflated elongation type pneumatic flexible actuator. A reinforced composite pipe comprises an elastic rubber hose and a reinforced net sleeve, wherein the initial section shape of the elastic rubber hose is flat, the reinforced net sleeve is packaged on the outer circumference of the elastic rubber hose, and an axis direction formed after the reinforced composite pipe is subjected to spiral winding is parallel to a short radius direction of the flat initial section of the reinforced composite pipe; a main driving body is sleeved on a guide rod, elastic bodies are uniformly bonded and installed on the circumference of the hole walls of the inner holes formed on the main driving body by the spiral winding of the reinforced composite pipe, and the installation direction of the elastic bodies is parallel to the axis direction of the main driving body; one end of the main driving body is fixedly connected with a first end cover, and the first end cover is bonded and fixedly connected with the guide rod; and the other end of the main driving body is fixedly connected with a second end cover, the inner hole of the second end cover and the guide rod are in clearance fit, and the second end cover can slide on the guide rod. A linear actuator with good flexibility of the invention is particularly suitable for the application fields, such as medical rehabilitation and the like and has good affinity with human bodies.
Owner:TECH TRANSFER CENT CO LTD NANJING UNIV OF SCI & TECH
Drilling assembly with a steering device for coiled-tubing operations
The present invention provides a drilling assembly for drilling deviated wellbores. The drilling assembly includes a drill bit at the lower end of the drilling assembly. A drilling motor provides the rotary power to the drill bit. A bearing assembly of the drilling motor provides lateral and axial support to the drill shaft connected to the drill bit. A steering device is integrated into drilling motor assembly. The steering device contains a plurality of force application members disposed at an outer surface of the drilling motor assembly Each force application member is adapted to move between a normal position and a radially extended position to exert force on the wellbore interior when in extended position. A power unit in the housing provides pressurized fluid to the force application members. A control device for independently operating each of the force application members is disposed in the drilling motor assembly. A control circuit or unit independently controls the operation of the control device to independently control each force application member. For short radius drilling, a knuckle joint is disposed uphole of the steering device to provide a bend in the drilling assembly. During drilling of a wellbore, the force application members are operated to adjust the force on the wellbore to drill the wellbore in the desired direction.
Owner:BAKER HUGHES INC
Device for drilling miniature borehole on ultra-short radius of coiled tubing
InactiveCN101294480AIncrease axial areaExtended service lifeDirectional drillingBorehole drivesDrive shaftCoiled tubing
The invention discloses a device for drilling minimal borehole on one coiled tubing side with ultra-short radius, which comprises a guider, a flexible transmission shaft, a driving motor and a bit. The flexible transmission shaft is arranged inside the guider, the bit is arranged at the output end of the flexible transmission shaft, and the driving motor is arranged at the input end of the flexible transmission shaft. The flexible transmission shaft includes more than three transmission sections which are connected with each other through ball heads, and the transmission sections are in surface contact with the ball heads. The invention increases the axial area of the flexible transmission shaft by using the ball heads to connect the transmission sections of the flexible transmission shaft and designing the surface contact between the transmission sections and the ball heads, thus prolonging the service time of the flexible transmission shaft and improving the device stability.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Method for Simultaneously Mining Vertically Disposed Beds
ActiveUS20100225154A1Safely and economically recoverConstructionsFluid removalEngineeringWater soluble
A method of solution mining vertically disposed beds of water-soluble deposits comprising a lower bed and at least one upper bed having at least one non-soluble layer disposed therebetween, said method comprising the steps of: (a) forming a channel in the lower bed; (b) drilling at least one zero radius or ultra-short radius injection pathway in the at least one upper bed; (c) manipulating at least one of the channel and the at least one injection pathway such that a fluid pathway is established between said channel and at least one injection pathway; (d) injecting a stream of solvent through the at least one injection pathway; and (e) recovering the solvent containing dissolved deposit therein via a recovery well.
Owner:GENESIS ALKALI WYOMING LP
Window opening and sidetrack drilling short-radius horizontal well and reverse circulation well cementing and water plugging method
InactiveCN104832119APrevent movementAvoid cloggingDirectional drillingSealing/packingWindow openingWell cementing
The invention relates to secondary productivity development of old wells and shut-down wells in oil fields and provides a window opening and sidetrack drilling short-radius horizontal well and reverse circulation well cementing and water plugging method. The method mainly includes the following six steps that: 1) a window opening point is selected; 2) a well trajectory is designed; 3) a whipstock is positioned and set; 4) casing window cutting operation is performed; 5) well trajectory control is performed; and 6) well completion operation is performed. The method of the invention can be applied to the secondary development of a part of low-yield wells and scrapped shut-down wells, can effectively obtain stored oil and residual oil in dead corners in uncontrolled areas of old wells, and can restore and improve single well production and ultimate recovery efficiency.
Owner:BEIJING YILONG HENGYE PETROLEUM ENG TECH
Optical turnaround
Fiber optic sensors commonly require a 180 degree turnaround to form a continuous optical circuit. Methods and apparatus for providing 180 degree turnarounds in a fiber optic system that include a shorter radius turnaround then provided by micro-bending the optic fiber are desired. An embodiment of a turnaround apparatus includes a first optic fiber pigtail, a second optic fiber pigtail, and an optical waveguide forming a U-shaped path having an input end optically connected to a first end of the first pigtail and an output end optically connected to a first end of the second pigtail.
Owner:SCHLUMBERGER TECH CORP
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