Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
04/2014
04/16/2014CN203547556U Drilling rod structure of drilling machine
04/16/2014CN203547544U Anti-settling mud drilling bit
04/16/2014CN203547532U Drill tool with protective device
04/16/2014CN103732848A Rigid hull gas-can buoys variable buoyancy
04/16/2014CN103732847A Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions
04/16/2014CN103726841A Portable geological prospecting sampling drill
04/16/2014CN103726798A Drill pipe sleeve for rotary drilling rig
04/16/2014CN103726797A Direct-transmission type oil pumping unit bottom connector and oil pumping device using bottom connector
04/16/2014CN103726796A Tri-axial stress strength design method
04/16/2014CN103726795A Design method for strength of casing string
04/16/2014CN102230361B Intelligent rotating joint
04/16/2014CN102182404B Cast-in-situ tubular pile rotary drilling rig capable of forming annular hole and piling method
04/15/2014US8696247 Systems and methods for controlling risers
04/15/2014US8695701 Measurement device in a horizontal well
04/10/2014WO2014055412A1 Insulative coating processes for electromagnetic telemetry mandrels
04/10/2014WO2014055364A1 Cutting and pulling tool with double acting hydraulic piston
04/10/2014WO2014055077A1 Sliding sleeve well tool with metal-to-metal seal
04/10/2014WO2014055061A1 Releasing a downhole tool
04/10/2014WO2014055060A1 Load cross-over slip-joint mechanism and method of use
04/10/2014WO2014053259A1 Downhole cable termination systems
04/10/2014WO2013139755A3 Drill bit for percussive drilling
04/10/2014WO2013096361A3 Inflatable packer element for use with a drill bit sub
04/10/2014WO2013043392A3 Composite limit collar
04/10/2014US20140096888 Rolled tubular centralizer
04/10/2014DE102012019850A1 Method for monitoring drill pipes, involves driving outer bar by rotary drive before rotational position of outer bar is checked, during axial displacement of drill pipe is occurred by performing rotating movement in opposite direction
04/09/2014EP2715064A2 Junction box to secure and electronically connect downhole tools
04/09/2014EP2715057A2 Window joint for lateral wellbore construction and method for opening same
04/09/2014EP2715045A2 Tubular coupling device
04/09/2014EP2715041A2 High pressure multibore junction assembly
04/09/2014EP2715037A1 Tubular connection and associated thread form
04/09/2014EP2715036A1 A clamp assembly and a clamp element especially for clamping buoyancy elements to pipeline risers
04/09/2014EP2715035A1 Optimized pressure drilling with continuous tubing drill string
04/09/2014CN203531892U Cross connector used for measurement of coal bed gas pressure
04/09/2014CN203531884U Detachable weighted lever
04/09/2014CN203531874U Thermal expansion compensator
04/09/2014CN203531869U Water injection pipe column with anti-corrosion inner liner and outer coating
04/09/2014CN203531807U Protecting bush type drill rod filter
04/09/2014CN203531791U Water-probing drill stem for probing concrete water level
04/09/2014CN203531790U Novel drill collar
04/09/2014CN203531789U Novel deviation-preventing and deviation-correcting drill collar
04/09/2014CN203531788U Drill collar automatically preventing inclination and correcting inclination
04/09/2014CN203531787U Novel pneumatic casing pipe righting platform
04/09/2014CN203531786U Well logging steel wire lubricating centralizer
04/09/2014CN203531785U Centralizer using liquid to assist in cleaning cuttings bed
04/09/2014CN203531784U Sucker rod centering device
04/09/2014CN203531783U Integral type strong elastic casing centralizer
04/09/2014CN203531782U Oil casing
04/09/2014CN203531781U Portable casing string safety grouting joint
04/09/2014CN203531780U Highly-resistant double-circular-bead oil sleeve joint
04/09/2014CN203531779U Quick guide buckle special screwed joint
04/09/2014CN203531778U High airtight threaded connector
04/09/2014CN203531777U High-quality airtight seal oil casing threaded joint
04/09/2014CN203531776U Economical torsion-resistant oil casing pipe screwed joint
04/09/2014CN203531775U Straight-thread connector with three torque shoulders
04/09/2014CN203531774U Fast assembly type drilling rod
04/09/2014CN203531773U High-tightness oil tube coupling structure
04/09/2014CN203531772U Adaptive threaded structure for high-sealing oil tube
04/09/2014CN203531771U Continuous air drilling circulation nipple
04/09/2014CN203531770U Quick connector for gas drilling
04/09/2014CN203531769U Complete retracting zigzag screwed nipple
04/09/2014CN203531768U Threaded connector with wedge-shaped sealing structures
04/09/2014CN203531767U Eight-tooth cylinder threaded connector
04/09/2014CN203531766U High-air-tightness expansion-pipe threaded connection structure
04/09/2014CN203531765U Expansion corn locking mechanism
04/09/2014CN203531764U Sealing portion structure for high-sealing oil tube
04/09/2014CN203531763U Drill rod and rotary drilling rig
04/09/2014CN203531762U Rigidity-reducing resistance reduction device applied to horizontal well completion tubular pile
04/09/2014CN203531761U Sucker rod weight increasing module
04/09/2014CN103717828A Downhole tool and method of use
04/09/2014CN103717827A Downhole tool and method of use
04/09/2014CN103717826A Downhole tool and method of use
04/09/2014CN103711440A Spiral type heavy weight drill pipe
04/09/2014CN103711439A Quick coupler capable of preventing separation
04/09/2014CN103711438A Failure analysis method for oil casings
04/09/2014CN102333933B Marine drilling riser connector with removable shear elements
04/09/2014CN101268246B Steerable drilling system
04/09/2014CN101010482B Excavating tool and steel pipe forepoling method
04/08/2014US8690481 Removable impact cover for a marine riser buoyancy module
04/08/2014US8689901 Electric power tool
04/08/2014US8689880 Multipart sliding joint for floating rig
04/08/2014CA2768455C Threaded tool joint connection
04/08/2014CA2765069C Method of drilling using an offshore riser
04/08/2014CA2747981C Well equipment for heated fluid recovery
04/03/2014WO2014052404A1 Secondary system and method for activating a down hole device
04/03/2014WO2014051580A1 Enhanced interconnect for downhole tools
04/03/2014WO2014051464A1 Protector for submersible electric motor
04/03/2014WO2014051463A1 Production tubing string protectolizer and damping assembly
04/03/2014WO2013090148A3 In-situ transfer and support of tensioned system and method for a flexible link
04/03/2014WO2012168742A3 Riser system
04/03/2014US20140090892 Apparatus and methods for controlling drill string vibrations and applying a force to a drill bit
04/03/2014US20140090855 Rotating and reciprocating swivel apparatus and method
04/03/2014US20140090832 Mandrel Arrangement and Method of Operating Same
04/02/2014CN203515550U Horizontal well logging centering device
04/02/2014CN203515531U Filling pipeline based on balance tank instillation device
04/02/2014CN203515471U Bypass valve of drill pipe pup joint
04/02/2014CN203515416U Inner pipe assembly for drilling rope coring roof leakage
04/02/2014CN203515370U Rotation deblocking type well completion guiding shoe
04/02/2014CN203515369U Bow-spring elastic centralizer
04/02/2014CN203515368U Riser vortex inducting vibration suppression device with rough undulating surface
04/02/2014CN203515367U Rotatable shuttle fairing type marine riser vortex-induced vibration suppression device
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