| Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712) |
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| 03/13/2013 | CN101906946B Hydraulic expansion-type rotary liner hanger |
| 03/13/2013 | CN101273182B 油井安全装置和相关的安全设施 Well safety devices and related security facilities |
| 03/12/2013 | US8393404 Downhole multiple bore rotary diverter apparatus |
| 03/12/2013 | US8393401 Liner hanger running tool and method |
| 03/12/2013 | US8393397 Apparatus and method for separating a tubular string from a subsea well installation |
| 03/12/2013 | US8393389 Running tool for expandable liner hanger and associated methods |
| 03/12/2013 | US8393387 Anchoring system and method |
| 03/12/2013 | CA2683270C Systems and methods for injecting or retrieving tubewire into or out of coiled tubing |
| 03/12/2013 | CA2545565C Device which is expandable to engage the interior of a tube |
| 03/07/2013 | WO2013030284A1 Annular barrier with compensation device |
| 03/07/2013 | WO2013030283A1 Annular barrier with pressure amplification |
| 03/07/2013 | WO2013030282A1 Disconnecting tool |
| 03/07/2013 | WO2012025714A3 Subsea running tool with emergency release |
| 03/07/2013 | US20130056222 Multiple Control Line Assembly for Downhole Equipment |
| 03/07/2013 | US20130056200 Hydraulic Deployment Of A Well Isolation Mechanism |
| 03/07/2013 | CA2845495A1 Annular barrier with compensation device |
| 03/07/2013 | CA2845487A1 Disconnecting tool |
| 03/06/2013 | EP2565368A1 Annular barrier with pressure amplification |
| 03/06/2013 | EP2565365A1 Disconnecting tool |
| 03/06/2013 | EP2564023A1 Downhole actuator apparatus having a chemically activated trigger |
| 03/06/2013 | CN202767971U Bidirectional extractor |
| 03/06/2013 | CN202767929U Small-diameter fisher |
| 03/06/2013 | CN202767923U Circulating anti-blocking tool used for oil-water well pulling-out casing |
| 03/06/2013 | CN202767922U Self-locking tubing anchor |
| 03/06/2013 | CN102953749A Pumping drill hole plugging device and pumping drill hole plugging method |
| 03/06/2013 | CN102953699A Synchronous locking device of casing pipe well drilling shaft bottom tool |
| 03/06/2013 | CN102953698A Expansion-type rotatable tail pipe hanger |
| 03/05/2013 | US8387708 Packoff with internal lockdown mechanism |
| 03/01/2013 | CA2788166A1 Valve for hydraulic fracturing through cement outside casing |
| 03/01/2013 | CA2788164A1 Valve for hydraulic fracturing through cement outside casing |
| 02/28/2013 | WO2013028342A2 Completing underwater wells |
| 02/28/2013 | WO2012088058A3 Sampling assembly for a single packer |
| 02/28/2013 | US20130048311 Apparatus and methods for assisting in setting a downhole tool in a well bore |
| 02/28/2013 | US20130048308 Integrated Continuous Liner Expansion Method |
| 02/28/2013 | US20130048307 Completion for downhole applications |
| 02/28/2013 | US20130048291 Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
| 02/28/2013 | US20130048290 Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
| 02/28/2013 | US20130048273 Resettable Lock for a Subterranean Tool |
| 02/27/2013 | EP2562350A2 Downhole pulsing tool |
| 02/27/2013 | EP2561175A1 Electromechanical actuator apparatus and method for down-hole tools |
| 02/27/2013 | CN202755934U Pumping dropped-object-resistant sand-setting tool |
| 02/27/2013 | CN202755933U In-place locking coring suspension positioning mechanism with double locks and single elastic clamp |
| 02/27/2013 | CN202755932U Automatically-locked tubing hanger downing and extracting tool |
| 02/27/2013 | CN202755931U Rubber core-tube quick-changing device |
| 02/27/2013 | CN202755930U Drift diameter type location device |
| 02/26/2013 | US8381823 Downhole tubular connector |
| 02/26/2013 | US8381819 Rotation mechanism |
| 02/26/2013 | CA2725202C Circulation system for retrieval of bottom hole assembly during casing while drilling operations |
| 02/21/2013 | WO2013025516A2 Debris barrier for hydraulic disconnect tools |
| 02/21/2013 | WO2012158370A4 Tubular cutting with debris filtration |
| 02/21/2013 | US20130043048 Systems and Methods for Selective Electrical Isolation of Downhole Tools |
| 02/21/2013 | US20130043047 Degradable no-go component |
| 02/21/2013 | US20130043046 Wellhead System Having a Tubular Hanger Securable to Wellhead and Method of Operation |
| 02/21/2013 | US20130043042 Multiple Shift Sliding Sleeve |
| 02/21/2013 | US20130043041 Selectively degradable passage restriction |
| 02/21/2013 | US20130043032 Valve for a Downhole Tool |
| 02/21/2013 | US20130043019 Downhole electrical coupler for electrically operated wellbore pumps and the like |
| 02/21/2013 | CA2844446A1 Debris barrier for hydraulic disconnect tools |
| 02/20/2013 | CN202745834U Preset downhole throttler without rope releasing |
| 02/20/2013 | CN202745788U Pumping unit wellhead packing box nut and gland hanger |
| 02/20/2013 | CN202745776U 地锚装置 Anchor device |
| 02/20/2013 | CN202745775U Special tool for lowering and lifting rod pump for oil well |
| 02/20/2013 | CN202745774U 橡胶锚定器 Rubber anchor |
| 02/20/2013 | CN202745773U Underground removable zero-gravity anchoring hanger |
| 02/20/2013 | CN202745772U T-shaped oil pipe hanger |
| 02/20/2013 | CN202745771U Hydraulic mechanical anchor for continuous pipe |
| 02/20/2013 | CN202745770U Hydraulic synergistic anti-pollution tool |
| 02/20/2013 | CN202745769U Under-pressure tripping-in device of continuous tube overlong drilling tool |
| 02/20/2013 | CN202745768U Suspension point unloader for pumping units |
| 02/20/2013 | CN202745767U Special tool for dismantling pump packing |
| 02/20/2013 | CN202745766U Well completion pipe column lowering tool |
| 02/20/2013 | CN202745765U Rotary short joint |
| 02/20/2013 | CN101892823B Method for throwing and fishing out underground restrictor from gas well without utilizing steel wires |
| 02/19/2013 | US8376659 Arctic platform method |
| 02/19/2013 | US8376057 Tubing hanger seal |
| 02/19/2013 | US8376055 Shearing tool and methods of use |
| 02/19/2013 | US8376054 Methods and systems for orienting in a bore |
| 02/19/2013 | US8376048 Offshore installation attachment system |
| 02/14/2013 | WO2013022728A1 Snap mount annular debris barrier |
| 02/14/2013 | WO2013022724A2 Reorienting annular debris barrier |
| 02/14/2013 | WO2013022720A2 Annular gap debris barrier |
| 02/14/2013 | WO2012146970A4 Smart hydraulic pumping device for recovering oil and obtaining down-hole information |
| 02/14/2013 | US20130037271 Bridging Hanger and Seal Running Tool |
| 02/13/2013 | CN202731861U Multistage detonating switch device with bridge plug sealing and perforation interacting |
| 02/13/2013 | CN202731823U Casing hanger and sealing lowering tool for ocean deepwater well drilling |
| 02/13/2013 | CN202731795U Downhole clamping device for plunger gas lifting |
| 02/13/2013 | CN202731794U Oil pumping wellhead unloader of sucker-rod pump |
| 02/13/2013 | CN102933789A Feed chain automatic tensioner |
| 02/13/2013 | CN102926730A Mining method for support pipe following air liquid spraying and drilling into coal bed gas of radial well |
| 02/13/2013 | CN102926699A Pipeline plugging device for heavy oil thermal production wells |
| 02/13/2013 | CN102926695A Oil pipe oil-drainage anchor |
| 02/13/2013 | CN102926694A Mechanical releasing device for coiled-tubing fracturing |
| 02/13/2013 | CN102926693A Method for plugging and reloading wellhead by using oil pipe plugging device |
| 02/12/2013 | US8371389 Differential shifting tool and method of shifting |
| 02/08/2013 | CA2784506A1 Fracturing tool anchor |
| 02/07/2013 | WO2013016822A1 Wellbore tool with indexing mechanism and method |
| 02/07/2013 | US20130032410 Core barrel assembly including a valve |
| 02/07/2013 | US20130032359 Rotating head |
| 02/07/2013 | US20130032357 Method of controlling corrosion rate in downhole article, and downhole article having controlled corrosion rate |
| 02/07/2013 | CA2844342A1 Wellbore tool with indexing mechanism and method |