| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 01/09/2013 | CN202659166U Portable right-angled buckling-changing joint for well drilling |
| 01/09/2013 | CN202659165U Anti-falling hanging cylinder for sucker rod |
| 01/09/2013 | CN202659164U Novel anti-eccentric-wear oil pumping rod |
| 01/09/2013 | CN202659163U Well completion well bore structure of single-inner diameter multilevel casing pipe |
| 01/09/2013 | CN202659150U Spiral base-expanding integral drill |
| 01/09/2013 | CN202659146U Double-drilling combined drill structure suitable for drilling operation of oil well and horizontal well |
| 01/09/2013 | CN202659140U Suspending type crash barrier spiral drilling machine |
| 01/09/2013 | CN102869911A Riser components and methods for making the same |
| 01/09/2013 | CN102869848A Coated sleeved oil and gas well production devices |
| 01/09/2013 | CN102866074A Sucker rod coupling and oil pipe abrasion tester |
| 01/09/2013 | CN102865052A Heat preservation method for coupling part of insulated tubing pipe column |
| 01/09/2013 | CN102865045A Rock drilling quick replacing drilling rod with taper thread |
| 01/09/2013 | CN102865044A Imitated aerofoil adaptive vortex-induced vibration suppression and resistance reduction device for underwater riser |
| 01/09/2013 | CN102865043A Water-guiding device for drilling |
| 01/09/2013 | CN102865040A Sleeve buoyancy weight reduction system |
| 01/09/2013 | CN102168529B Bolt-driven double-cone locking piece type riser connector |
| 01/09/2013 | CN102134972B Device for inhibiting vortex-induced vibration of underwater standpipe of fish-tail imitating cowling |
| 01/09/2013 | CN102080538B Neutron emission control method, device and short joint for while-drilling neutron porosity measurement |
| 01/08/2013 | US8347982 System and method for managing heave pressure from a floating rig |
| 01/08/2013 | US8347956 Wellbore method and apparatus for completion, production and injection |
| 01/08/2013 | US8347916 Self-sealing chemical injection line coupling |
| 01/08/2013 | CA2783098A1 Electromechanical assembly for connecting a series of perforating guns in oil and gas wells |
| 01/08/2013 | CA2690390C Wired pipe signal transmission testing apparatus and method |
| 01/08/2013 | CA2556430C Clamping apparatus, drill string component and rock drilling rig |
| 01/03/2013 | WO2013000048A1 Reinforcement joint for riser columns used in oil extraction |
| 01/03/2013 | WO2012142098A3 Umbilical for use in subsea applications |
| 01/03/2013 | WO2012138517A3 Corrodable boring shoes for wellbore casing, and methods of forming and using such corrodable boring shoes |
| 01/03/2013 | WO2012095671A3 Centraliser |
| 01/03/2013 | US20130000990 Replaceable wear band for well drill pipe |
| 01/03/2013 | US20130000983 Drill rod shock tool |
| 01/03/2013 | DE102011107348A1 "Verbindungsvorrichtung" "Connecting device" |
| 01/02/2013 | EP2539535A1 Coated sleeved oil and gas well production devices |
| 01/02/2013 | EP2539534A1 Riser section connector with flanges and external locking ring |
| 01/02/2013 | EP2539533A2 Clamping arrangement |
| 01/02/2013 | EP2539532A2 Pressure-activated valve for hybrid coiled tubing jointed tubing tool string |
| 01/02/2013 | CN202645558U Crawler-type single-head drilling rig coal cutter |
| 01/02/2013 | CN202645521U Horizontal well injecting and extracting pipe column of gas reservoir |
| 01/02/2013 | CN202645518U Novel expansion pipe connecting structure |
| 01/02/2013 | CN202645512U Lift-type separate layer production string |
| 01/02/2013 | CN202645474U Application of double-O-ring seal structure in sealing side water feeder |
| 01/02/2013 | CN202645466U Antiseptic righting anti-attrition pair for oil well |
| 01/02/2013 | CN202645465U Connection structure of high pressure resistant oil casing |
| 01/02/2013 | CN202645464U Casing joint for oil well pipe |
| 01/02/2013 | CN202645463U Thread gluing resistant two-stage gas seal screwed joint |
| 01/02/2013 | CN202645462U Coupling |
| 01/02/2013 | CN202645461U Sucker rod antifriction coupling |
| 01/02/2013 | CN202645460U Sucker rods with inserting connection rod heads |
| 01/02/2013 | CN202645459U Sucker rod provided with inclined connection faces |
| 01/02/2013 | CN202645458U Drill pipe connector of drilling machine |
| 01/02/2013 | CN202645457U Oil sleeve communicating device for pumping well |
| 01/02/2013 | CN202645456U Insulated tubing coupling |
| 01/02/2013 | CN202645455U Double graphite sealing device for heat injection pipeline |
| 01/02/2013 | CN202645454U Straddle test caber perforation combination string |
| 01/02/2013 | CN202645453U Anti-fleeing fixer for casing pipe |
| 01/02/2013 | CN202645452U Sucker rod provided with rod heads of cambered surface ball head |
| 01/02/2013 | CN202645451U Drill pipe structure |
| 01/02/2013 | CN202645450U Adjustable casing pipe finger |
| 01/02/2013 | CN202645449U Oil exploitation wear-resistant polish rod |
| 01/02/2013 | CN202645448U Suspended energy-saving, corrosion-preventing and wear-resisting sucker rod |
| 01/02/2013 | CN202645447U Novel 73 mm clearance oil tube |
| 01/02/2013 | CN202645434U Eccentric simultaneous casing drilling tool for expanding holes through rotation |
| 01/02/2013 | CN202645424U Quick drilling machine |
| 01/02/2013 | CN202645423U Power transmission mechanism for rotary drilling rig drilling stem and rotary drilling rig |
| 01/02/2013 | CN102859110A Drill bit for percussive rock drilling |
| 01/02/2013 | CN102852515A Fracture eccentric locating detector for mechanical horizontal well casing |
| 01/02/2013 | CN102852483A Novel sucker rod centralizing paraffin scraper |
| 01/02/2013 | CN102852470A Thread structure with large-caliber double-head thread oil casing pipe |
| 01/02/2013 | CN102852469A Special buttress thread oil sleeve joint |
| 01/02/2013 | CN102852468A High-sealing special circular thread oil sleeve connection connector |
| 01/02/2013 | CN102852467A Separate zone production technical string capable of protecting oil reservoirs |
| 01/02/2013 | CN102852466A Special buttress thread oil sleeve connecting joint |
| 01/02/2013 | CN102852465A Single-body drilling rod and drilling rod formed by same |
| 01/02/2013 | CN102852457A Follow-up drilling machine for down-hole hammer casing pipe |
| 01/02/2013 | CN102851607A 110 ksi-Grade oil sleeve having high resistance to CO2 corrosion and its preparation method |
| 01/02/2013 | CN102071882B Hydraulic sleeve positioner |
| 01/02/2013 | CN101713279B Deviation prevention and fast drilling technology of eccentric drilling tool assembly |
| 01/02/2013 | CN101240694B Modular connector and method |
| 01/01/2013 | US8344905 Method and conduit for transmitting signals |
| 12/27/2012 | WO2012177680A2 Well-based fluid communication control assembly |
| 12/27/2012 | WO2012177650A2 Subsea connector with a split clamp latch assembly |
| 12/27/2012 | WO2012177559A2 Gooseneck conduit system |
| 12/27/2012 | WO2012177460A2 Production system and method of varying restrictions to flow along the same |
| 12/27/2012 | WO2012177339A2 Housing, mandrel and bearing assembly for downhole drilling motor |
| 12/27/2012 | WO2012177294A1 Systems and methods for stabilizing oilfield equipment |
| 12/27/2012 | WO2012175658A2 Tubular device with radiofrequency communication for well head |
| 12/27/2012 | WO2012175572A1 Uncoupling device for connecting a drilling tool to the end of a drilling column and a drilling system comprising such an uncoupling device |
| 12/27/2012 | WO2012174662A1 Kobe sub with inflow control, wellbore tubing string and method |
| 12/27/2012 | WO2012149272A3 Downhole tools having mechanical joints with enhanced surfaces, and related methods |
| 12/27/2012 | WO2012145488A3 System and method for deploying a downhole casing patch |
| 12/27/2012 | WO2012145160A3 Galvanically isolated exit joint for well junction |
| 12/27/2012 | WO2012125619A3 Hydro-mechanical downhole tool |
| 12/27/2012 | WO2012106031A3 Adjustable riser suspension and sealing system |
| 12/27/2012 | WO2012094194A3 Low equivalent circulation density setting tool |
| 12/27/2012 | US20120325561 Housing, Mandrel and Bearing Assembly for Downhole Drilling Motor |
| 12/27/2012 | US20120325492 Drilling Composition, Process for its Preparation, and Applications Thereof |
| 12/27/2012 | US20120325489 Apparatus and methods for use in establishing and/or maintaining controlled flow of hydrocarbons during subsea operations |
| 12/27/2012 | US20120325487 Systems and methods for stabilizing oilfield equipment |
| 12/27/2012 | US20120325486 Gooseneck conduit system |
| 12/27/2012 | CA2840164A1 Tool and method for locking and releasing a plug |
| 12/27/2012 | CA2838868A1 Housing, mandrel and bearing assembly for downhole drilling motor |