Patents
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
12/2013
12/18/2013CN103452499A Casing positioner for petroleum drilling
12/18/2013CN103452498A Rotary steerable drilling universal joint
12/18/2013CN103452497A Tubing head of drilling equipment for offshore oil field
12/18/2013CN103452496A Injection-production integrated automatic switching production joint for thick oil thermal production well
12/18/2013CN103452495A Method for determining ultimate operating torque of tool joint under complex working conditions
12/18/2013CN103452494A Locking device for drilling tools
12/18/2013CN103452493A Special resistance-welding composite sulfur-resistant drill rod and method for manufacturing same
12/18/2013CN103452492A Forming method of drill pipe high station structure for rapid raising and dropping drill and drill pipe
12/18/2013CN103452491A Production process of drilling tubing and casing for oilfields
12/18/2013CN103452490A Novel expansion pipe column
12/18/2013CN103452489A Wellhead four-way casing for oil production deep well
12/18/2013CN103452472A Slurry pumping type well drilling device and well drilling method
12/18/2013CN102361892B Fluororesin and riser pipe
12/18/2013CN102041978B Rod hiding type oil pumping unit
12/18/2013CN101956536B Rod carrying monitoring method and rod carrying prevention system for drill rod of rotary drilling machine
12/17/2013US8607900 Downhole tool engaging a tubing string between a drill bit and tubular for reaming a wellbore
12/17/2013US8607856 Cable head for petroleum logging
12/12/2013WO2013184676A1 Wellbore influx detection in a marine riser
12/12/2013WO2013184406A1 Chilled clathrate transportation system
12/12/2013WO2013184138A1 Shunt tube assembly entry device
12/12/2013WO2013182196A1 A riser and an offshore system
12/12/2013WO2013181704A1 Flange catching, aligning and closing tool
12/12/2013WO2013149268A3 Chained clamp pipeline repair structure and method of use
12/12/2013WO2012170152A3 Subsea pressure relief devices and methods
12/12/2013US20130327542 Jumper Tube Locking Assembly and Method
12/12/2013US20130327533 Wellbore influx detection in a marine riser
12/12/2013US20130327518 Improvements relating to core barrel outer tubes
12/12/2013US20130327447 High-Strength Corrosion-Resistant Tubing for Oil and Gas Completion and Drilling Applications, and Process for Manufacturing Thereof
12/12/2013CA2875851A1 Shunt tube assembly entry device
12/12/2013CA2875623A1 A riser and an offshore system
12/12/2013CA2875509A1 Downhole safety joint
12/11/2013EP2672058A2 Method and device for sealing the ends of drilling rod elements
12/11/2013EP2670951A2 Connection cartridge for downhole string
12/11/2013CN203336070U Bi-metal composite gas drainage pipeline with coating
12/11/2013CN203335122U Internally-arranged drill rod temperature-control automatic air closing inflaming-retarding device
12/11/2013CN203334978U Spring type automatic reversing guiding shoe
12/11/2013CN203334977U Groove type anti-rotating anchor for oil well
12/11/2013CN203334976U Surface casing wellhead corrector
12/11/2013CN203334975U Sucker rod centering device
12/11/2013CN203334974U Special threaded buckling coupling
12/11/2013CN203334973U Anti-suction device for horizontal well cutting bed removing, trip and piston pulling
12/11/2013CN203334972U Multilateral well pumping-prevention connector
12/11/2013CN203334971U Adapter substitute of logging instrument
12/11/2013CN203334970U Triangular drill rod
12/11/2013CN203334969U Sucker rod
12/11/2013CN203334968U Oil well casing pipe
12/11/2013CN103443392A Bore protector
12/11/2013CN103437718A Pendulum bob type vortex-induced vibration suppression device and method capable of rotating after being impacted
12/11/2013CN103437717A Rotatable pentagonal impeller type vortex-induced vibration inhibiting device and method
12/11/2013CN103437716A Centering and sealing mechanism suitable for casing pipe driving head
12/11/2013CN103437708A Casing pipe driving head suitable for casing pipe well drilling
12/11/2013CN102305027B Anti-corrosion thermal-proof oil pipe with thermal barrier coating on surface for thermal recovery of thick oil
12/10/2013US8602675 Assembly comprising first and second components
12/10/2013US8602125 Switch arrangement for controlling operation of a motor of a power tool
12/10/2013US8602113 Coated oil and gas well production devices
12/10/2013US8602097 Well assembly with a composite fiber sleeve for an opening
12/10/2013CA2749221C Thrust bearing assembly for a wireline-operated directional core barrel drill
12/05/2013WO2013181303A1 Monitoring integrity of a riser pipe network
12/05/2013WO2013180970A1 Drilling riser retrieval in high current
12/05/2013WO2013014440A3 Landing string
12/05/2013WO2013011293A3 Down-hole swivel sub
12/05/2013WO2012131354A3 A riser
12/05/2013US20130320665 Process for coating a threaded tubular component, threaded tubular component and resulting connection
12/05/2013US20130319772 Hammer bit locking mechanism
12/05/2013US20130319690 Pull Through Centralizer
12/05/2013US20130319689 Pull Through Centralizer
12/05/2013US20130319686 Centralizer connector
12/05/2013US20130319684 Friction reducing stabilizer
12/05/2013US20130319680 Drilling Riser Retrieval in High Current
12/05/2013US20130319677 Well completion
12/05/2013US20130319655 Downhole safety joint
12/04/2013EP2668364A2 Drill string components resistant to jamming
12/04/2013EP2668363A1 System and method for coupling pipes
12/04/2013CN203321393U Medium-soft rock core extractor
12/04/2013CN203321364U Lining oil tube end protective device
12/04/2013CN203321363U Corrosion-resistant and abrasion-resistant oil pumping polished rod
12/04/2013CN203321362U Hydraulic type casing centralizer
12/04/2013CN203321361U Near-bit stabilizer
12/04/2013CN203321360U Stabilizer bar structure and raise boring machine comprising stabilizer bar structure
12/04/2013CN203321359U Anti-abrasion connector of sleeve
12/04/2013CN203321358U Spring positioning pin for connection of plug-in drill pipe
12/04/2013CN203321357U Inclined joint replacing conventional mud motor bent shell
12/04/2013CN203321356U Breakage-resistant connecting-stripping device
12/04/2013CN203321355U Lifting-jetting guiedvane for blocked oil pipe
12/04/2013CN203321354U Connector for coiled tube
12/04/2013CN203321353U Underwater oil outlet pipe connector
12/04/2013CN203321352U Adjustable water cap for screw drill
12/04/2013CN203321351U Novel rapid connecting sealing rod
12/04/2013CN203321350U Snake bone drill pipe for drilling
12/04/2013CN203321349U Arc-shaped sealing device for pressure tapping for pipelines or drill pipes
12/04/2013CN203321348U Watertight drill pipe
12/04/2013CN203321347U High-load drill rod and raise-boring machine comprising drill rod
12/04/2013CN203321328U Reamer bit for construction long screw pile machine
12/04/2013CN203321324U Underground coal mine seam drilling and cavitating device
12/04/2013CN203321312U Gear down-the-hole mixing drilling tool and gear down-the-hole drilling machine comprising gear down-the-hole mixing drilling tool
12/04/2013CN203321311U Gear down-the-hole mixing drilling tool and gear down-the-hole drilling machine comprising gear down-the-hole mixing drilling tool
12/04/2013CN103422819A Airtight connection structure for oil well pipe
12/04/2013CN103422818A Environment-friendly soiling solution recovery device
12/04/2013CN103422810A Soil boring machine
12/04/2013CN102619470B Method for controlling transverse vibration of drill string in process of reaming while drilling
1 ... 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 ... 278