| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 12/24/2002 | US6497277 Internal gate valve for flow completion systems |
| 12/19/2002 | US20020189822 Drillable bridge plug |
| 12/19/2002 | US20020189821 Gravel inflated isolation packer |
| 12/19/2002 | US20020189820 Drillable bridge plug |
| 12/19/2002 | US20020189817 Power system for a well |
| 12/19/2002 | US20020189813 Flow completion system |
| 12/19/2002 | US20020189806 System and technique for monitoring and managing the deployment of subsea equipment |
| 12/18/2002 | EP0932790B1 Undersea hydraulic connector with equalization channel |
| 12/18/2002 | CN2526499Y Small chemical cavity heat expansion type packer with shear pin |
| 12/18/2002 | CN2526498Y Ground drive of screw pump for extracting oil |
| 12/18/2002 | CN2526497Y Multifunctional anti-theft device for oil well head |
| 12/18/2002 | CN2526496Y Packer box assembly for oil production well head |
| 12/18/2002 | CN1096537C Acid soluble leak stopping agent |
| 12/17/2002 | US6494269 Downhole apparatus for controlling fluid pressure |
| 12/17/2002 | US6494268 Transport and support frame for a bop assembly |
| 12/17/2002 | US6494267 Wellhead assembly for accessing an annulus in a well and a method for its use |
| 12/17/2002 | US6494266 Controls bridge for flow completion systems |
| 12/17/2002 | US6494257 Flow completion system |
| 12/13/2002 | CA2390443A1 Gravel inflated isolation packer |
| 12/12/2002 | WO2002099247A1 In-situ casting of well equipment |
| 12/12/2002 | WO2002099246A1 Compression set, large expansion packing element |
| 12/12/2002 | WO2002090709A3 Quick release blowout preventer bonnet |
| 12/12/2002 | WO2002084069B1 Nested stack-down casing hanger system for subsea wellheads for annulus pressure monitoring |
| 12/12/2002 | US20020185280 Internal gate valve for flow completion systems |
| 12/12/2002 | US20020185279 Debris cap |
| 12/12/2002 | US20020185276 Apparatus and method for inserting and retrieving a tool string through well surface equipment |
| 12/11/2002 | EP1264962A1 Open hole formation testing |
| 12/11/2002 | EP1264075A1 Method and apparatus for stimulation of multiple formation intervals |
| 12/11/2002 | EP1264074A1 Intervention device for a subsea well, and method and cable for use with the device |
| 12/11/2002 | EP1264073A1 Downhole surge pressure reduction and filtering apparatus |
| 12/11/2002 | EP1264069A2 Wellbore circulation system, kelly bushing, kelly and tong |
| 12/11/2002 | EP1264066A1 Template and system of templates for drilling and completing offsite well bores |
| 12/11/2002 | CN2525246Y Packing box |
| 12/10/2002 | US6491421 Fluid mixing system |
| 12/10/2002 | US6491116 Frac plug with caged ball |
| 12/10/2002 | US6491108 Drillable bridge plug |
| 12/10/2002 | US6491104 Open-hole test method and apparatus for subterranean wells |
| 12/10/2002 | US6491103 System for running tubular members |
| 12/07/2002 | CA2697133A1 Apparatus and method for inserting and retrieving a tool string through well surface equipment |
| 12/05/2002 | WO2002097234A1 Line hanger, running tool and method |
| 12/05/2002 | WO2002097008A2 Horizontal spool tree assembly |
| 12/05/2002 | US20020179300 Fluid catching and signaling stuffing box enclosure |
| 12/05/2002 | US20020178804 Open hole formation testing |
| 12/04/2002 | EP1262629A1 Slim hole stage cementer and method |
| 12/04/2002 | EP1261563A1 Multifunctional additive to cement slurries |
| 12/04/2002 | CN2523946Y Fully opened protecting boxes of hole top |
| 12/04/2002 | CN2523941Y Auxiliary tool for oil sucking pump against sand blocking |
| 12/04/2002 | CN1383468A Packer and method for fixation thereof in well |
| 12/03/2002 | US6488764 Cement composition with polymeric latexes prepared in the presence of amps seed |
| 12/03/2002 | US6488094 Method and apparatus for shutting off upward flow from a conduit |
| 12/03/2002 | US6488093 Deep water intervention system |
| 12/03/2002 | US6488089 Methods of plugging wells |
| 12/03/2002 | US6488087 Field development methods |
| 12/03/2002 | US6488084 Casing hanger seal positive stop |
| 12/03/2002 | US6488083 Tubing hanger system |
| 11/28/2002 | WO2002095185A1 Retaining apparatus for use in a wellhead assembly and method for using the same |
| 11/28/2002 | WO2002095184A1 Apparatus and method for connecting riser between a floating vessel and a subsea structure |
| 11/28/2002 | US20020176748 Apparatus and method for connecting riser between a floating vessel and a subsea structure |
| 11/28/2002 | US20020175474 Tubing seal |
| 11/28/2002 | US20020174991 One-trip wellhead installation systems and methods |
| 11/28/2002 | US20020174990 Dummy undersea hydraulic coupling member |
| 11/28/2002 | US20020174986 Slim hole stage cementer and method |
| 11/28/2002 | US20020174985 Positive indication system for well annulus cement displacement |
| 11/28/2002 | DE10201631A1 Technik zum Ausbilden expandierbarer Vorrichtungen aus Zellen, die zwischen einem kontrahierten Zustand und einem expandierten Zustand wechseln können Technique for forming expandable devices from cells that can switch between a contracted state and an expanded state |
| 11/27/2002 | EP1259709A1 Controllable production well packer |
| 11/27/2002 | EP1259706A2 Use of downhole high pressure gas in a gas-lift well |
| 11/27/2002 | CN2522615Y Scratch-proof anchoring well-washing packer |
| 11/27/2002 | CN2522614Y Blowout preventer shear flashboard |
| 11/27/2002 | CN2522613Y Dynamic rubber-filling packing box for pumping unit |
| 11/27/2002 | CN1095023C Cementing tool for plugging well underground |
| 11/26/2002 | US6484808 Stripper/packer |
| 11/26/2002 | US6484807 Wellhead assembly for injecting a fluid into a well and method of using the same |
| 11/26/2002 | US6484806 Methods and apparatus for hydraulic and electro-hydraulic control of subsea blowout preventor systems |
| 11/26/2002 | US6484805 Method and apparatus for injecting one or more fluids into a borehole |
| 11/26/2002 | US6484804 Pumpdown valve plug assembly for liner cementing system |
| 11/26/2002 | US6484382 Method of providing an internal circumferential shoulder in a cylindrical passageway |
| 11/26/2002 | CA2227642C Linear indexing apparatus with selective porting |
| 11/24/2002 | CA2387196A1 Slim hole stage cementer and method |
| 11/21/2002 | WO2002064942A3 Downhole packer |
| 11/21/2002 | US20020171560 Reservoir management system and method |
| 11/21/2002 | US20020170721 Retaining apparatus use in a wellhead assembly and method for using the same |
| 11/20/2002 | EP0907821B1 Christmas tree |
| 11/20/2002 | CN2521384Y Mechanical self-sealing steam injection packer |
| 11/20/2002 | CN2521383Y Oil well packer |
| 11/20/2002 | CN2521382Y Packer |
| 11/20/2002 | CN2521381Y Long term closed well downhole plug |
| 11/20/2002 | CN2521380Y Roller type blow-out preventing box for oil field |
| 11/20/2002 | CN2521379Y Red centering guide for changing sealing ring of pumping well |
| 11/20/2002 | CN2521378Y Well head sealing box cover support clamp |
| 11/19/2002 | US6481505 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 11/19/2002 | US6481502 Borehole closure plug |
| 11/19/2002 | US6481501 Method and apparatus for drilling and completing a well |
| 11/19/2002 | US6481497 High temperature high pressure retrievable packer with barrel slip |
| 11/19/2002 | US6481496 Well packer and method |
| 11/19/2002 | US6481329 System for remote control and operation |
| 11/19/2002 | CA2076641C Stabilized suspension and its use for the recovery of hydrocarbons |
| 11/19/2002 | CA2016750C Wellhead joint and sealing ring |
| 11/18/2002 | CA2385793A1 Well reference apparatus and method |
| 11/14/2002 | WO2002090711A2 Combined perforation and cement retainer tool for plugging a wellbore |
| 11/14/2002 | WO2002090710A2 Packer with lateral feed-through connection |