| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 08/19/2004 | US20040159438 Control pod latchdown mechanism |
| 08/19/2004 | US20040159431 fluid loss control polymer additive from an unsaturated sulfonic acid, unsaturated carboxy acid or anhydride, vinyl amide, hydrocarbylenebis- acrylate or acrylamide, and optionally an unsaturated ether or allyl alcohol |
| 08/19/2004 | US20040159430 System for use in controlling a hydrocarbon production well |
| 08/19/2004 | CA2808302A1 Apparatus and methods for drilling a wellbore using casing |
| 08/19/2004 | CA2725717A1 Apparatus and methods for drilling a wellbore using casing |
| 08/18/2004 | EP1446367A2 Method of hardening a fluid mass |
| 08/18/2004 | CN2634105Y Oil pipe anti-spray box |
| 08/18/2004 | CN2634104Y Adjustable oil pipe hanging device |
| 08/18/2004 | CN2634103Y Polished rod seal device |
| 08/18/2004 | CN1162506C Composite sandproof material for oil and water well and its prepn |
| 08/17/2004 | US6776239 Tubing conveyed fracturing tool and method |
| 08/17/2004 | US6776230 Coiled tubing line deployment system |
| 08/17/2004 | US6776228 Ball dropping assembly |
| 08/17/2004 | CA2239417C Method for isolating hydrocarbon-containing formations intersected by a well drilled for the purpose of producing hydrocarbons therethrough |
| 08/17/2004 | CA2206806C Formation evaluation tool and method for use of the same |
| 08/17/2004 | CA2120114C Horizontal inflation tool |
| 08/12/2004 | WO2004067906A1 Alternative method to cementing casing and liners |
| 08/12/2004 | WO2004067905A2 Well packer inflation system and method of inflating same |
| 08/12/2004 | WO2004067899A1 Method and apparatus for raise bore drilling and lining a bore hole |
| 08/12/2004 | WO2004067883A2 Control pod latchdown mechanism |
| 08/12/2004 | WO2004067594A2 Polyether polyesters having anionic functionality |
| 08/12/2004 | WO2004022902A3 Tie-back connection for subsea well |
| 08/12/2004 | WO2004018825A3 Riser connector |
| 08/12/2004 | WO2003095874A3 Metal end cap seal with annular protrusions |
| 08/12/2004 | WO2003060281A3 Stacked borehole packer modules |
| 08/12/2004 | US20040154835 Tong for wellbore operations |
| 08/12/2004 | US20040154810 Method and system for increasing tubing resistance to pressure |
| 08/12/2004 | US20040154809 Method and apparatus for operations in underground/subsea oil and gas wells |
| 08/12/2004 | US20040154804 Fully recoverable drilling control pod |
| 08/12/2004 | US20040154800 Well servicing apparatus and method |
| 08/12/2004 | US20040154799 Combined scale inhibitor and water control treatments |
| 08/12/2004 | US20040154798 Zero drill completion and production system |
| 08/12/2004 | US20040154797 Shoe for expandable liner system |
| 08/12/2004 | US20040154795 Apparatus and method for completing a well |
| 08/12/2004 | US20040154790 Y-body Christmas tree for use with coil tubing |
| 08/11/2004 | EP1444415A1 Single well development system |
| 08/11/2004 | EP1264075A4 Method and apparatus for stimulation of multiple formation intervals |
| 08/11/2004 | CN2632307Y Internal-pipe well cementing sealer |
| 08/11/2004 | CN2632306Y Double cylinder cleaning hole packer |
| 08/11/2004 | CN2632305Y Downhole separated filling and combined recovering packer for thickened oil recovery by heating |
| 08/11/2004 | CN2632304Y Diameter variable drivepipe hanging mechanical plugger |
| 08/11/2004 | CN2632303Y Rotary blowout preventer during drilling assembled sealed self-adjusting apparatus |
| 08/11/2004 | CN2632302Y Automatic stuffing box |
| 08/11/2004 | CN2632301Y Oil leakage proofing device of oil well stuffing box |
| 08/11/2004 | CN2632300Y Full direction multifunctional polish rod sealer |
| 08/11/2004 | CN2632299Y Self-sealing well testing blow-out preventing controller |
| 08/11/2004 | CN1520490A Drilled hole closure |
| 08/10/2004 | US6772844 High pressure sealing apparatus and method |
| 08/10/2004 | US6772843 Sea-floor pressure head assembly |
| 08/10/2004 | US6772835 Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring |
| 08/10/2004 | CA2232034C Single bore riser system |
| 08/10/2004 | CA2228439C Method and apparatus for testing and sampling open-hole oil and gas wells |
| 08/05/2004 | WO2004065758A1 Well treatment system |
| 08/05/2004 | WO2004065757A2 Autonomous well intervention system |
| 08/05/2004 | WO2004053935A3 High power umbilicals for electric flowline immersion heating of produced hydrocarbons |
| 08/05/2004 | WO2004044366A3 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 08/05/2004 | WO2004042186A8 High-pressure packer with endurance |
| 08/05/2004 | WO2004016899A3 Horizontal spool tree wellhead system and method |
| 08/05/2004 | WO2003067020A3 Flowline jumper for subsea well |
| 08/05/2004 | WO2003046424A3 High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and method |
| 08/05/2004 | WO2003042489A3 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/05/2004 | US20040152602 Injecting at high pressure into the formation a fracturing fluid comprising an aqueous acid, a synthetic polymer, a metal crosslinking agent and lactic acid or a salt; crosslinking the synthetic polymer and metal crosslinking agent |
| 08/05/2004 | US20040149454 Downhole sealing |
| 08/05/2004 | US20040149449 Vent screen pressure deployment tool and method of use |
| 08/05/2004 | US20040149446 Power connection to and/or control of wellhead trees |
| 08/05/2004 | US20040149443 Resistive down hole heating tool |
| 08/05/2004 | US20040149440 Method and apparatus for downhole tubular expansion |
| 08/05/2004 | US20040149431 Method and apparatus for a monodiameter wellbore, monodiameter casing and monobore |
| 08/05/2004 | US20040149429 High expansion plug with stacked cups |
| 08/05/2004 | US20040149418 In-situ casting of well equipment |
| 08/04/2004 | EP1264066A4 Template and system of templates for drilling and completing offsite well bores |
| 08/04/2004 | EP1159510B1 Wellbore primary barrier and related systems |
| 08/04/2004 | CN2630485Y Release-free throuring-fishing-free flushing packer |
| 08/04/2004 | CN2630484Y Flushing anchornig packer |
| 08/04/2004 | CN2630483Y Multi-stage long-acting sealer |
| 08/04/2004 | CN2630482Y Blow-out preventer |
| 08/04/2004 | CN2630481Y Rotary blow-out preventer |
| 08/04/2004 | CN2630480Y Multi-purpose well shut-in device |
| 08/04/2004 | CN2630479Y Wellhead packing box follow-centring device |
| 08/04/2004 | CN2630475Y Anchored oil-discharging pipe anchor |
| 08/03/2004 | US6769491 Anchoring and sealing system for a downhole tool |
| 08/03/2004 | US6769489 Well stimulation tool and method of using same |
| 08/03/2004 | CA2118969C Method and apparatus for controlling steam breakthrough in a well |
| 07/29/2004 | WO2004063607A2 Actuator for well-head valve or other similar applications and system incorporating same |
| 07/29/2004 | WO2004063520A2 Emergency deflate mechanism for inflatable packer assemblies |
| 07/29/2004 | WO2004063519A2 Blow out preventer handling system |
| 07/29/2004 | WO2004027200A3 Bottom plug for forming a mono diameter wellbore casing |
| 07/29/2004 | WO2004011762A3 Stell tube flying lead jumper connector |
| 07/29/2004 | WO2003087523A3 Split carrier annulus seal assembly for wellhead systems |
| 07/29/2004 | US20040147407 Polyesterether copolymer, where in anionic diacid monomer or diester monomer selected from dimethyl 5-sulfoisophthalate, sulfosuccinic acid, 4-sulfophthalic acid, sulfonaphthalic acid, salts and anhydrides; applied to crude oil processes |
| 07/29/2004 | US20040144568 Drilling system with expandable sleeve |
| 07/29/2004 | US20040144566 Boring apparatus |
| 07/29/2004 | US20040144547 Methods and apparatus for applying torque and rotation to connections |
| 07/29/2004 | US20040144538 Alternative method to cementing casing and liners |
| 07/29/2004 | US20040144536 Anti-rotation method and apparatus for limiting rotation of cementing plugs |
| 07/29/2004 | US20040144532 Anti-rotation method and apparatus for limiting rotation of cementing plugs |
| 07/29/2004 | US20040144531 Anti-rotation method and apparatus for limiting rotation of cementing plugs |
| 07/29/2004 | US20040144530 Toroidal choke inductor for wireless communication and control |
| 07/28/2004 | EP1204808B1 Drilling and completion system for multilateral wells |
| 07/28/2004 | CN2628721Y Compressing packer |