| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/15/2004 | CN2641278Y Automatic grouting, reverse flow limiting type float coupling, float shoe |
| 09/15/2004 | CN2641277Y Fishing-able and drilling-able bridge plug |
| 09/15/2004 | CN2641276Y Self sealing examining, fishing-free and water injecting type packer |
| 09/15/2004 | CN2641275Y Small diameter and expansion type fracture packer |
| 09/15/2004 | CN2641274Y Blowout preventer when pumping well polish rod being broken and falling-off |
| 09/15/2004 | CN2641273Y Automatic device for rectifying deviation and sealing for pumping well polish rod |
| 09/15/2004 | CN1529035A Water-injection clay plug process and apparatus |
| 09/14/2004 | USRE38578 Method and apparatus for cementing a well |
| 09/14/2004 | US6789619 Apparatus and method for detecting the launch of a device in oilfield applications |
| 09/14/2004 | CA2341139C Wellhead production pumping tree |
| 09/10/2004 | WO2004076812A1 Methods for passing a swelling agent into a reservoir to block undesirable flow paths during oil production |
| 09/10/2004 | WO2004076810A1 A method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation |
| 09/10/2004 | WO2004076797A2 Method and apparatus to complete a well having tubing inserted through a valve |
| 09/10/2004 | CA2641567A1 Method and apparatus to complete a well having tubing inserted through a valve |
| 09/09/2004 | US20040173363 Packer with integrated sensors |
| 09/09/2004 | US20040173361 Method of expanding a tubular element in a wellbore |
| 09/09/2004 | US20040173353 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 09/09/2004 | US20040173348 Casing adapter tool for well servicing |
| 09/09/2004 | US20040173347 Apparatus for controlling a tool having a mandrel that must be strocked into or out of a well |
| 09/08/2004 | EP1455052A2 Improved packer with integrated sensors |
| 09/08/2004 | EP1454032A1 Method and device for injecting a fluid into a formation |
| 09/08/2004 | EP1453932A1 Method of stabilising clay or shale |
| 09/08/2004 | CN2639518Y Self-seal throwless flushing packer |
| 09/08/2004 | CN2639517Y Seating type casinghead |
| 09/08/2004 | CN2639516Y Small-diameter pipe self-seal sealer for well repairing with pressure |
| 09/08/2004 | CN2639504Y Multifunction oil well anti-pollution tubular column |
| 09/07/2004 | US6787758 Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/07/2004 | US6786629 Automated cement mixing system |
| 09/07/2004 | CA2421348A1 Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well |
| 09/04/2004 | CA2458495A1 Improved packer with integrated sensors |
| 09/02/2004 | WO2004074621A2 System and method for maintaining zonal isolation in a wellbore |
| 09/02/2004 | WO2004042188A3 Down hole induction heating tool and method of operating and manufacturing same |
| 09/02/2004 | WO2004027202A3 Inner riser adjustable hanger and seal assembly |
| 09/02/2004 | WO2003087523B1 Split carrier annulus seal assembly for wellhead systems |
| 09/02/2004 | US20040168810 Tensioning arrangement for a subsea wellhead assembly |
| 09/02/2004 | US20040168804 Method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation |
| 09/02/2004 | US20040168798 Methods for passing a swelling agent into a reservoir to block undesirable flow paths during oil production |
| 09/02/2004 | US20040168795 Well cap systems |
| 09/01/2004 | EP1451442A1 Methods and compositions for sealing an expandable tubular in a wellbore |
| 09/01/2004 | EP1451441A1 Resilient cement |
| 09/01/2004 | EP1451440A1 Mechanical joints for subsea equipment |
| 09/01/2004 | EP1169548B1 Method for annular sealing |
| 09/01/2004 | EP1159509B1 Single valve for a casing filling and circulating apparatus |
| 09/01/2004 | CN2637716Y Hydraulic compression type washable well hydraulic sealing release packer |
| 09/01/2004 | CN2637715Y Well washing packer |
| 09/01/2004 | CN2637714Y Motor pumped well sealing devcie used for raising motor pumped well water outlet and output speed |
| 09/01/2004 | CN2637713Y Double surface dual purpose flash board blowout preventer |
| 09/01/2004 | CN2637712Y Oil well eccentric antitheft thread block |
| 09/01/2004 | CN1525038A Well killing method using solid water particles as kill fluid |
| 08/31/2004 | US6782954 Open hole straddle tool |
| 08/31/2004 | US6782949 Choke valve with pressure transmitters |
| 08/31/2004 | US6782946 Method and apparatus for injecting one or more fluids into a borehole |
| 08/31/2004 | CA2371373C Coiled tubing hanger assembly |
| 08/31/2004 | CA2287625C Method of patching downhole casing |
| 08/31/2004 | CA2205761C Retractable coupler |
| 08/31/2004 | CA2128543C Straight bore metal-to-metal wellborne seal apparatus and method of sealing in a wellbore |
| 08/26/2004 | WO2004072439A1 A device and a method for optional closing of a section of a well |
| 08/26/2004 | WO2004072438A1 Arrangement of test plug |
| 08/26/2004 | WO2004072436A1 Shoe for expandable liner system |
| 08/26/2004 | WO2004072434A2 Methods and apparatus for wellbore construction and completion |
| 08/26/2004 | US20040167248 Methods of sealing expandable pipe in well bores and sealing compositions |
| 08/26/2004 | US20040164494 BOP assembly with metal inserts |
| 08/26/2004 | US20040163821 Clamping well casings |
| 08/26/2004 | US20040163818 Plug installation system for deep water subsea wells |
| 08/26/2004 | US20040163816 Sub mudline abandonment connector |
| 08/26/2004 | US20040163811 Fracturing tool having tubing isolation system and method |
| 08/26/2004 | US20040163807 Instrumented packer |
| 08/26/2004 | US20040163805 Method and apparatus to complete a well having tubing inserted through a valve |
| 08/26/2004 | US20040163802 Multi-channel high pressure swivel |
| 08/25/2004 | EP1448866A1 Method and device for boring holes |
| 08/25/2004 | EP1280976A4 Instrumented cementing plug and system |
| 08/25/2004 | EP1261563B1 Multifunctional additive to cement slurries |
| 08/25/2004 | EP1252440A4 Controlling activation of devices |
| 08/25/2004 | EP1075582B1 Subsea mud pump |
| 08/25/2004 | CN2635903Y Recovering bridging plug |
| 08/25/2004 | CN2635902Y Pressure difference holing type double-stage cementing device |
| 08/25/2004 | CN2635901Y Difference hydraulic drilling liner hanger |
| 08/25/2004 | CN2635900Y Top driving inner blowout preventer controller |
| 08/25/2004 | CN2635899Y Packing device for sealing-box of hole head of oil suction well |
| 08/25/2004 | CN2635898Y Self-sealing packer |
| 08/25/2004 | CN1524158A Quick release blowout preventer bonnet |
| 08/25/2004 | CN1524157A Rotational mounts for blowout preventer bonnets |
| 08/25/2004 | CN1523202A Integrated water blocking, profile control and sand prevention construction method for high-viscosity oil wells |
| 08/25/2004 | CN1523201A Well pumping unit pit-top abrasion-proof, corrosion-resisting apparatus |
| 08/24/2004 | US6779602 Seal |
| 08/24/2004 | US6779601 Inflatable packing element |
| 08/24/2004 | US6779600 Labyrinth lock seal for hydrostatically set packer |
| 08/24/2004 | CA2278080C Formation pressure measurement with remote sensors in cased hole |
| 08/24/2004 | CA2191410C Thru tubing bridge plug and method |
| 08/19/2004 | WO2004070163A1 Composite inflatable downhole packer or bridge plug |
| 08/19/2004 | WO2004070162A1 Tubular deployment tool and method of use |
| 08/19/2004 | WO2004070159A2 Apparatus and methods for drilling a wellbore using casing |
| 08/19/2004 | WO2004055950A8 Feedthrough of an electrical conductor |
| 08/19/2004 | US20040159467 Continuous circulation drilling method |
| 08/19/2004 | US20040159465 Drilling method |
| 08/19/2004 | US20040159447 By-pass valve mechanism and method of use hereof |
| 08/19/2004 | US20040159445 Apparatus and method |
| 08/19/2004 | US20040159441 Method of and apparatus for dual packing of capillary tubing in a wellhead |
| 08/19/2004 | US20040159440 Method of and apparatus for securing capillary tubing in a wellhead |
| 08/19/2004 | US20040159439 Non-orienting tubing hanger system with a flow cage |