| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 07/25/2013 | WO2013017117A3 Holder for tubular drilling tools having different diameters |
| 07/25/2013 | WO2012109092A3 Method and apparatus for facilitating hang off of multiple top tension riser or umbilicals from a compensated tensioning deck |
| 07/25/2013 | US20130186690 Methods and systems for controlling torque transfer from rotating equipment |
| 07/25/2013 | US20130186669 Pipe and pipe assembly provided with layers of electrically conductive material for conveying substances |
| 07/25/2013 | US20130186640 Method and apparatus to position and protect control lines being coupled to a pipe string on a rig |
| 07/25/2013 | US20130186614 Wellhead tubular connector |
| 07/24/2013 | CN203081426U Horizontal well logging safety cable head |
| 07/24/2013 | CN203081338U Integral-type mining drill stem with rib |
| 07/24/2013 | CN203081337U Opening-closing type drilling tool centering device |
| 07/24/2013 | CN203081336U Non-coupling expansion outer threaded connector and non-coupling expansion inner threaded connector for expansion casing pipe |
| 07/24/2013 | CN203081335U Nonstandard 365.13 mm buttress thread sleeve pipe connector |
| 07/24/2013 | CN203081334U Threaded coupling for pipe |
| 07/24/2013 | CN203081333U Anti-separating bi-directional hydraulic absorber |
| 07/24/2013 | CN203081332U Spiral sealing gasket |
| 07/24/2013 | CN203081331U Double-seal universal joint |
| 07/24/2013 | CN203081330U High-load expansion hanger back-off connector |
| 07/24/2013 | CN203081329U Sawtooth-shaped safety connector |
| 07/24/2013 | CN203081328U Anti-drop safety lifting barrel for sucker rod |
| 07/24/2013 | CN203081327U Integral mining drill pipe |
| 07/24/2013 | CN203081326U Novel composite sleeve pipe for oil exploitation |
| 07/24/2013 | CN203081325U Internal and external thickening transitional belt drilling rod |
| 07/24/2013 | CN203081324U Internal thickening arc transitional belt drilling rod |
| 07/24/2013 | CN203081323U Torsion oil-sucking polish rod |
| 07/24/2013 | CN203081322U Oil field underground extension tube for torque transmission |
| 07/24/2013 | CN203081288U Drilling device |
| 07/24/2013 | CN203080528U Drilling and spraying integrated foundation treating special drilling tool assembly |
| 07/24/2013 | CN203080527U Drilling and spraying integrated foundation treating drilling tool assembly |
| 07/24/2013 | CN203080514U Cement mixing pile device capable of realizing up and down slurry spraying shifting |
| 07/24/2013 | CN203080513U Multi-axis interchangeable-type cement-soil mixing pile device capable of reducing soil compaction property |
| 07/24/2013 | CN103221629A Remote operation of a rotating control device bearing clamp |
| 07/24/2013 | CN103216197A Fast-rotation type oil drill rod joint thread reinforcing structure |
| 07/24/2013 | CN103216192A Screw drilling robot with underground detection function |
| 07/24/2013 | CN103215425A Heating processing technology for deep sea petroleum drill by adopting conduit joint |
| 07/24/2013 | CN102517511B Steel for high-expansion-rate petroleum casing and method for manufacturing petroleum casing |
| 07/24/2013 | CN102268962B Oil seal screw drilling tool transmission shaft assembly with pressure compensation function |
| 07/24/2013 | CN101443528B A female part and method for manufacturing a female part |
| 07/23/2013 | US8490692 Contingency release device that uses right-hand torque to allow movement of a collet prop |
| 07/20/2013 | CA2802794A1 Downhole tool with external housing torque transfer |
| 07/18/2013 | WO2013106374A1 Apparatus and methods utilizing progressive cavity motors and pumps with independent stages |
| 07/18/2013 | WO2013106259A1 Treatment system for multiple zones |
| 07/18/2013 | WO2013106011A2 Downhole oscillator |
| 07/18/2013 | WO2013105952A1 Pipe in pipe bha electric drive motor |
| 07/18/2013 | WO2013105035A1 A connector for tubular elements |
| 07/18/2013 | WO2013104470A2 A drill bit for a percussive hammer, and shank therefore |
| 07/18/2013 | WO2013104069A1 Fluid or slurry pulsing casing/liner shoe |
| 07/18/2013 | WO2013016641A4 Methods of coating wellbore tools and components having such coatings |
| 07/18/2013 | US20130181799 Inductive Couplers for Use in A Downhole Environment |
| 07/18/2013 | US20130181442 Threaded joint for pipe |
| 07/18/2013 | US20130180729 Rf applicator having a bendable tubular dielectric coupler and related methods |
| 07/18/2013 | US20130180728 Welded Downhole Components and Method of Forming Same |
| 07/18/2013 | US20130180707 Rugged Coiled Tubing Connector |
| 07/18/2013 | CA2860908A1 Nested dual drill pipe |
| 07/18/2013 | CA2860904A1 Seal assembly for nested dual drill pipe |
| 07/18/2013 | CA2857763A1 Rf applicator having a bendable tubular dielectric coupler and related methods |
| 07/18/2013 | CA2837938A1 Downhole oscillator |
| 07/17/2013 | EP2615240A2 Tubing Encased Motor Lead |
| 07/17/2013 | EP2614212A2 Shank adapter with corrosion protection |
| 07/17/2013 | EP2614211A2 Rigid hull gas-can buoys with variable buoyancy |
| 07/17/2013 | CN203066910U Negative-pressure drilling system |
| 07/17/2013 | CN203066896U Eccentric sucker rod wear preventing centralizer |
| 07/17/2013 | CN203066895U Multi-wing type rigid casing pipe centralizer |
| 07/17/2013 | CN203066894U Integrated elastic centering guide |
| 07/17/2013 | CN203066893U Centering device for reaming well section |
| 07/17/2013 | CN203066892U Floating device for protecting threads of drilling rod |
| 07/17/2013 | CN203066891U Flexible cardan shaft assembly in screw drill |
| 07/17/2013 | CN203066890U Hollow universal joint for rotary steerable drilling |
| 07/17/2013 | CN203066889U Connecting piece used for connecting drill rods |
| 07/17/2013 | CN203066888U Blockage-preventing safety joint |
| 07/17/2013 | CN203066887U Insulating short joint for transmission data of electromagnetic wave measurement while drilling during drilling |
| 07/17/2013 | CN203066886U Multiple-start thread quick connecting type well drilling water-proof/sand-proof pipe |
| 07/17/2013 | CN203066885U Antiseptic tubing short joint of sacrificial anode |
| 07/17/2013 | CN203066884U Arc-shaped ribbed drill rod with central hole allowing gas release pipe to insert |
| 07/17/2013 | CN203066883U Air pipe suspension type gas lift reverse circulation drilling rod |
| 07/17/2013 | CN203066882U High-strength arc angle triquetrum drill rod |
| 07/17/2013 | CN203066881U Opening-type drilling tool and rotary drilling rig |
| 07/17/2013 | CN203066880U Material changing corrosion resistant coiled tubing |
| 07/17/2013 | CN203066879U Heat preservation oil pipe for thick oil exploitation |
| 07/17/2013 | CN203066858U Multifunctional front-digging and back-hanging type earth boring machine |
| 07/17/2013 | CN103210179A Navigation system |
| 07/17/2013 | CN103210173A Protector for an oil extraction pipe |
| 07/17/2013 | CN103206176A Built-in oil pipe drill rod |
| 07/17/2013 | CN103206175A Drill collar with high fatigue resistance |
| 07/17/2013 | CN103206174A Driving riser shoe with elliptical conical teeth |
| 07/17/2013 | CN103206173A Novel installing structure of central swivel joint |
| 07/17/2013 | CN103205646A Seamless steel pipe for G-class high-tenacity drill pipe body |
| 07/16/2013 | US8485281 Equipment for drilling secant holes |
| 07/16/2013 | US8485268 Recovering heated fluid using well equipment |
| 07/11/2013 | WO2013103700A1 Drill chuck isolator |
| 07/11/2013 | WO2013103699A1 Drill bit and chuck isolators |
| 07/11/2013 | WO2013103646A1 Double-acting shock damper for a downhole assembly |
| 07/11/2013 | WO2013028409A3 Riser system |
| 07/11/2013 | WO2013025516A3 Debris barrier for hydraulic disconnect tools |
| 07/11/2013 | WO2013019746A3 Method and apparatus for forcing a pipeline into or out of a borehole |
| 07/11/2013 | US20130175050 Method and apparatus for reducing stick-slip in drilling operations |
| 07/11/2013 | US20130175047 Variably configurable wellbore junction assembly |
| 07/11/2013 | US20130175028 Downhole Shock Absorber with Guided Crushable Nose |
| 07/11/2013 | CA2764302A1 Fluid or slurry pulsing casing/liner shoe |
| 07/10/2013 | EP2612981A1 A drill bit for a percussive hammer, and shank and retention lug therefore |
| 07/10/2013 | EP2611985A1 An arm system for logging a wellbore and method for using same |
| 07/10/2013 | EP2611984A1 An anti-locking device for use with an arm system for logging a wellbore and method for using same |