| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 07/21/2009 | US7562705 Packer cup for a packoff nipple |
| 07/21/2009 | US7562704 Delaying swelling in a downhole packer element |
| 07/21/2009 | US7562702 Drain cap stuffing box |
| 07/21/2009 | CA2513066C Annular fluids and methods of emplacing the same |
| 07/21/2009 | CA2506828C Blow out preventer with telescopic conductor tube assembly |
| 07/21/2009 | CA2497027C Apparatus and methods for utilizing a downhole deployment valve |
| 07/21/2009 | CA2465936C Method and apparatus for anchoring downhole tools in a wellbore |
| 07/17/2009 | CA2721468A1 Dual directional downhole overpressure valve |
| 07/16/2009 | WO2009088674A2 Frac system split ring device |
| 07/16/2009 | US20090179383 Swellable packer with composite material end rings |
| 07/16/2009 | US20090178810 Hydraulic overshot with removable setting and testing core |
| 07/16/2009 | US20090178808 Convertible seal |
| 07/16/2009 | US20090178798 Fracturing isolation sleeve |
| 07/16/2009 | CA2709688A1 Frac system split ring device |
| 07/15/2009 | EP2078134A2 Imputing strength gradient in pressure vessels |
| 07/15/2009 | CN201273169Y High-pressure fishing type suspension packing tool |
| 07/15/2009 | CN201273168Y High pressure-resistant sealing mechanism of packer |
| 07/15/2009 | CN201273167Y Oil pipe plug |
| 07/15/2009 | CN201273166Y Side door sealing member for ram type preventer |
| 07/15/2009 | CN201273165Y Blowout preventer for hollow sucker rod |
| 07/15/2009 | CN201273164Y Polished rod sealer of oil pump |
| 07/15/2009 | CN201273163Y Integral plugging device for double-ball offset adjustment well head packing kit |
| 07/15/2009 | CN201273162Y Sealing ring of slips hanger |
| 07/15/2009 | CN101482001A Rubber plug system used for drilling liner cementing of horizontal well |
| 07/15/2009 | CN100513737C Apparatus and method for free-fall installation of an underwater wellhead |
| 07/14/2009 | US7559523 Dual-cylinder blowout preventer operator system |
| 07/14/2009 | US7559370 Restricting fluid passage and novel materials therefor |
| 07/14/2009 | US7559369 Well treatment composition and methods utilizing nano-particles |
| 07/14/2009 | US7559366 Flex-lock metal seal system for wellhead members |
| 07/14/2009 | CA2579072C Method and apparatus for cementing production tubing in a multilateral borehole |
| 07/14/2009 | CA2568431C Dual purpose blow out preventer |
| 07/14/2009 | CA2565174C Aqueous-based tackifier fluids and methods of use |
| 07/14/2009 | CA2517978C Drilling with casing latch |
| 07/14/2009 | CA2455994C Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone |
| 07/14/2009 | CA2429292C Fluid mixing system |
| 07/09/2009 | WO2009086279A2 Acoustic measurements with downhole sampling and testing tools |
| 07/09/2009 | WO2009085780A2 System and method for snubbing under pressure |
| 07/09/2009 | WO2009085349A1 Logging tool deployment systems and methods without pressure compensation |
| 07/09/2009 | WO2009085348A2 Logging tool deployment systems and methods with pressure compensation |
| 07/09/2009 | WO2009067588A3 Wired multi-opening circulating sub |
| 07/09/2009 | WO2009052791A3 Device and method for activating or cleaning wells |
| 07/09/2009 | WO2009052114A3 Water sensing adaptable inflow control device using a powered system |
| 07/09/2009 | US20090173505 Method For Running A Continuous Communication Line Through A Packer |
| 07/09/2009 | US20090173499 Methodology for setting of an inflatable packer using solid media |
| 07/09/2009 | US20090173490 Sand Control Screen Assembly and Method for Use of Same |
| 07/09/2009 | US20090173489 Bridge plug and setting tool |
| 07/09/2009 | CA2710857A1 Wellbore pipe centralizer having increased restoring force and self-sealing capability |
| 07/09/2009 | CA2709074A1 Telescopic joint mini control panel |
| 07/08/2009 | EP2077375A2 Universal tubing hanger suspension assembly and well completion system and method of using same |
| 07/08/2009 | CN201269078Y Hydraulic release type mechanical bridge plug |
| 07/08/2009 | CN201269077Y Horizontal well plugging process column jacket capable of being dragged and drilled |
| 07/08/2009 | CN201269076Y Bidirectional slip packer |
| 07/08/2009 | CN201269075Y Novel flushing safety slip packer |
| 07/08/2009 | CN201269074Y Minor-diameter drillable packer |
| 07/08/2009 | CN201269073Y Wedge type rubber cylinder with steel skeleton |
| 07/08/2009 | CN201269072Y Liquid control apparatus on oil well release column jacket |
| 07/08/2009 | CN201269071Y Novel pressure balance control apparatus for operation under pressure |
| 07/08/2009 | CN201269070Y Multi-stage test-drilling blowout prevention box |
| 07/08/2009 | CN201269069Y Multifunctional pressure-release regulator for water injection well |
| 07/08/2009 | CN201269068Y Combined well head moving seal apparatus |
| 07/08/2009 | CN201269067Y Trip guiding head for gas drilling |
| 07/08/2009 | CN201269066Y Well head sealing ring of oil pumping machine |
| 07/08/2009 | CN201269065Y Security environment-protection type test blowout control pipe |
| 07/08/2009 | CN201269064Y Pipeline connection sealing well-washing assorted apparatus used for oil field production well |
| 07/08/2009 | CN201269063Y Multifunctional blowout-prevention packing kit for oil extraction well |
| 07/08/2009 | CN201269062Y Dead well plugging device |
| 07/08/2009 | CN101476452A Water-control fracturing yield increasing method for oil gas well |
| 07/08/2009 | CN101476451A Active-sealing rotary blowout preventer glue core |
| 07/08/2009 | CN100510437C Tightening system for secure connection of at least two elements with one another |
| 07/08/2009 | CN100510314C Filling and leakage blocking process for cracking leak gravel |
| 07/07/2009 | US7556100 Apparatus and method for delivering chemicals into an underground well |
| 07/07/2009 | US7556092 Flow control system for an apparatus for radially expanding tubular members |
| 07/07/2009 | CA2632646C Retrievable frac mandrel and well control stack to facilitate well completion, re-completion or workover and method of use |
| 07/07/2009 | CA2489063C Filtered actuator port for hydraulically actuated downhole tools |
| 07/07/2009 | CA2450924C Expandable liner hanger with bypass |
| 07/07/2009 | CA2397460C Method and apparatus for stimulation of multiple formation intervals |
| 07/07/2009 | CA2355002C Modular catch pan for wellheads and a method of use of the same |
| 07/02/2009 | WO2009082234A1 Method and system for circulating fluid in a subsea intervention stack |
| 07/02/2009 | WO2009079770A1 Dual-stage valve straddle packer for selective stimulation of wells |
| 07/02/2009 | WO2009032589A4 Downhole tubular seal system and method |
| 07/02/2009 | WO2008140919A3 Stormwater filter assembly |
| 07/02/2009 | US20090166046 System and Method for Dynamic Sealing Of a Drill String |
| 07/02/2009 | US20090166042 Purging of fiber optic conduits in subterranean wells |
| 07/01/2009 | EP2074278A1 Reinforcement of irregular pressure vessels |
| 07/01/2009 | CN201265389Y Lower-pressure deblocking type bridge plug and deblocking suspension |
| 07/01/2009 | CN201265388Y Segmented cementing tool |
| 07/01/2009 | CN201265387Y Oil well mouth protection apparatus for shallow sea |
| 07/01/2009 | CN201265386Y Rotating blowout preventer for well workover |
| 07/01/2009 | CN201265385Y Casing tube plug shutter apparatus |
| 07/01/2009 | CN101473103A Packer element for use in a stuffing box |
| 07/01/2009 | CN100507206C Pressure equalization type static sealed pressurized well-repairing working device |
| 06/30/2009 | US7552779 Downhole method using multiple plugs |
| 06/30/2009 | US7552778 Seal cup for a wellbore tool and method |
| 06/30/2009 | US7552772 Locating recess in a shoe for expandable liner system |
| 06/30/2009 | US7552769 Packoff nipple |
| 06/30/2009 | US7552768 Swelling packer element with enhanced sealing force |
| 06/30/2009 | US7552767 Closeable open cell foam for downhole use |
| 06/30/2009 | US7552766 Ribbed sealing element and method of use |
| 06/30/2009 | US7552765 Wellhead blowout preventer with extended ram for sealing central bore |
| 06/30/2009 | US7552763 Sphere launcher |