Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
10/1999
10/27/1999EP0952304A1 Hanger assembly
10/27/1999EP0952300A1 Method and apparatus for drilling a plurality of offshore underwater wells
10/27/1999CN2345686Y Retrievable bridging plug
10/27/1999CN2345685Y No-slips thermal compression-type gas-injection packer
10/26/1999US5971079 Casing filling and circulating apparatus
10/26/1999US5971077 Insert tree
10/26/1999US5971076 Subsea wellhead structure for transferring large external loads
10/26/1999US5971072 Inductive coupler activated completion system
10/26/1999US5971070 Apparatus for completing a subterranean well and associated methods
10/20/1999EP0744004B1 A protective device for an installation mounted on the seabed
10/19/1999US5969006 Remedial well bore sealing methods
10/19/1999US5967699 Method and apparatus for launching a pig in a vertical riser pipe
10/19/1999US5967235 Wellhead union with safety interlock
10/19/1999US5967231 Plug release indication method
10/19/1999US5967229 Device for plugging horizontal or vertical wells in oil or similar drillings
10/19/1999CA2155912C Fixed offshore platform structures, using small diameter, tensioned, well casing tiebacks
10/14/1999WO1999051852A1 Subsea diverter and rotating drilling head
10/14/1999WO1999051850A2 Underground cable and pipelaying
10/14/1999WO1999051704A1 Injection molded degradable casing perforation ball sealers
10/13/1999CN2343334Y Double-layer eccentric water distribution packer
10/12/1999US5964292 Grouting application of the annulas seal system for well casings
10/12/1999US5964286 Tubing rotator
10/07/1999WO1999050524A2 Subsea mud pump
10/07/1999CA2326353A1 Subsea mud pump
10/06/1999EP0690942B2 Process for sealing off ground sites and device for carrying out this process
10/05/1999US5961123 Method of operating a downhole tool
10/05/1999US5961094 Method and apparatus for replacing a packer element
10/05/1999US5960881 Downhole surge pressure reduction system and method of use
10/05/1999US5960876 Wellhead equipment that use polymer sealing elements to seal off well pressure
10/01/1999CA2266880A1 Wellhead retrieving tool
09/1999
09/30/1999WO1999049180A1 Blowout preventer
09/30/1999WO1999049179A1 Shear ram for ram-type blowout preventer
09/30/1999WO1999049177A1 Rotating connector with compensating unit
09/30/1999WO1999049173A1 Rotating subsea diverter
09/30/1999WO1999049172A1 Offshore drilling system
09/30/1999CA2326358A1 Rotating subsea diverter
09/30/1999CA2326129A1 Offshore drilling system
09/30/1999CA2304732A1 Blowout preventer
09/29/1999CN2340892Y Polish rod sealer for adding fillers in working status
09/28/1999US5959547 Well control systems employing downhole network
09/28/1999US5957204 Placing a liquid epoxy composition between said conduit and the walls of the well bore and hardening to form a flexible and resilient seal that can withstand stress induced by conduit movement
09/28/1999US5957201 Verification apparatus and method for a static wellhead plug
09/28/1999US5957198 Telescoping joint for use in conduit connected wellhead and zone isolating tool
09/28/1999CA2173350C Apparatus for testing a shear thickening plugging fluid
09/28/1999CA2155917C Early evaluation by fall-off testing
09/27/1999CA2262243A1 Method and apparatus for drilling a plurality of offshore underwater wells
09/23/1999WO1999047790A1 Extraction of fluids from wells
09/23/1999WO1999047788A1 Well control
09/23/1999WO1999047787A1 Pressure balanced choke and kill line connector
09/22/1999EP0943050A1 Blowout preventer control system
09/22/1999CN2339745Y Holding-support type oil-containing combined packing
09/21/1999US5955666 Satellite or other remote site system for well control and operation
09/21/1999US5954137 Apparatus and method for avoiding formation impairment during completion of wellbores
09/21/1999US5954133 Methods of completing wells utilizing wellbore equipment positioning apparatus
09/21/1999US5954132 Patching of injection and production well annular casing leaks for restoring mechanical integrity
09/21/1999CA2177629C Wellhead production blowout preventer ram
09/21/1999CA2102068C Wellhead isolation tool and method of use
09/16/1999DE19811699A1 Sub soil gas sampling probe of modular construction
09/15/1999CN1228826A Swivel
09/15/1999CN1228825A Subsea module
09/14/1999US5951066 Connecting system for wellhead components
09/14/1999US5950727 Hydrocarbon production with injection
09/14/1999US5950725 For mounting on the upper end of casing
09/14/1999US5950724 Lifting top drive cement head
09/14/1999CA2153612C Integral blowout preventer and flow tee
09/10/1999WO1999045236A1 Formation testing apparatus and method
09/10/1999WO1999045234A1 A non-rotating sensor assembly for measurement-while-drilling
09/10/1999WO1999045233A1 Sealing for energy wells
09/10/1999WO1999045228A1 Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment
09/10/1999CA2322287A1 Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment
09/08/1999CN2337314Y Packer for water injection well
09/08/1999CN2337313Y Gas-drive incoming and outcoming packer
09/08/1999CN2337312Y Strong blow-out preventing rod sealing device
09/08/1999CN2337311Y Multi-function well head blow-out preventing box
09/08/1999CN2337310Y Well head blow-out preventer and anticollision device for oil-dredging in casing
09/07/1999US5947205 Subterranean wellbore tool
09/07/1999US5947204 Production fluid control device and method for oil and/or gas wells
09/07/1999US5947201 One-trip window-milling method
09/02/1999WO1999043923A1 Compositions for use in well construction, repair and/or abandonment
09/02/1999WO1999043922A1 Safety seal for wells
09/02/1999WO1999027230A3 Method for locating placement of a guide stock in a multilateral well and apparatus therefor
09/02/1999WO1999023349A8 Device for connecting a manifold module and a structure on a seabed
09/01/1999EP0939194A2 Plug device for use in a subterranean well
09/01/1999EP0938622A1 Method for accelerating production - c-i-p ii
09/01/1999EP0938621A1 Communication conduit in a well tool
09/01/1999CN2336087Y Wedged thermal recovery packer
09/01/1999CN2336086Y Water packer
09/01/1999CN2336085Y Multipurpose blowout preventing lifting sub
09/01/1999CN2336084Y Multifunctional blowout hookup
08/1999
08/31/1999US5944446 Injection of mixtures into subterranean formations
08/31/1999US5944111 Internal riser tensioning system
08/31/1999US5944110 Variable bore ram packer for a ram type blowout preventer
08/31/1999US5944102 High temperature high pressure retrievable packer
08/31/1999US5944099 Infuser for composite spoolable pipe
08/31/1999CA2172097C Dual string assembly for gas wells
08/26/1999WO1999042700A1 Improvements in or relating to reducing water flow
08/25/1999EP0937861A2 Apparatus and methods for completing a wellbore
08/25/1999CN2334872Y Chemical temporary-blocking tap for water injection well of oil field
08/25/1999CN1226948A Subsea well
08/24/1999US5941574 Horizontal penetrator with multiple metal sealing pressure lines
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