| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/12/2004 | US6802372 Apparatus for releasing a ball into a wellbore |
| 10/12/2004 | US6802371 Template and system of templates for drilling and completing offset well bores |
| 10/12/2004 | CA2379497C Slip spool and method of using same |
| 10/07/2004 | WO2004085790A2 Apparatus for radially expanding and plastically deforming a tubular member |
| 10/07/2004 | WO2004063520A3 Emergency deflate mechanism for inflatable packer assemblies |
| 10/07/2004 | US20040196038 Downhole NMR processing |
| 10/07/2004 | US20040194972 Tubular expansion fluid production assembly and method |
| 10/07/2004 | US20040194971 Device and method to seal boreholes |
| 10/07/2004 | US20040194970 Expandable seal member with shape memory alloy |
| 10/07/2004 | US20040194969 Method and device related to a retrievable well plug |
| 10/07/2004 | US20040194962 System for retrieving a tubular element from a well |
| 10/07/2004 | US20040194961 Reducing production and preventing migration of loose particulates; applying aqueous liquid and surfactant preflush solution, integrated consolidation fluid and afterflush fluid; noncatalytic |
| 10/07/2004 | US20040194959 Downhole polymer plug and liner and methods employing same |
| 10/07/2004 | US20040194957 Controlling addition level using coloring agent in water soluble bag as indicator; pumping water based separating fluid containing visual marker followed by cementing slurry through casing to hole bottom to displace drilling mud until color can be seen; stopping and hardening |
| 10/07/2004 | US20040194953 Downhole apparatus |
| 10/07/2004 | US20040194914 Bottom member and heat loops |
| 10/06/2004 | EP1464788A1 Cementing head |
| 10/06/2004 | EP1339944B1 High temperature and pressure packer |
| 10/06/2004 | EP0802302B1 Riser that is to be detached near the water surface |
| 10/06/2004 | CN2646374Y Novel hydraulic righting packer |
| 10/06/2004 | CN2646373Y Balanced type sealing segment |
| 10/06/2004 | CN1169905C High temp. temporary plugging agent and its prepn. method |
| 10/05/2004 | US6799638 Method, apparatus and system for selective release of cementing plugs |
| 10/05/2004 | US6799635 Method of cementing a tubular string in a wellbore |
| 10/05/2004 | CA2288103C Downhole surge pressure reduction system and method of use |
| 09/30/2004 | WO2004083598A1 Tubing hanger orientation device |
| 09/30/2004 | WO2004083596A1 System and method for treating drilling mud in oil and gas well drilling applications |
| 09/30/2004 | WO2004083595A2 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 09/30/2004 | WO2004083593A2 Radial expansion and milling of expandable tubulars |
| 09/30/2004 | WO2004083590A2 Method and apparatus for drilling a borehole with a borehole liner |
| 09/30/2004 | WO2004083589A2 Restricting fluid passage and novel materials therefor |
| 09/30/2004 | WO2004057147A3 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production. |
| 09/30/2004 | WO2004027200B1 Bottom plug for forming a mono diameter wellbore casing |
| 09/30/2004 | US20040188954 Method and apparatus for ECP element inflation utilizing solid laden fluid mixture |
| 09/30/2004 | US20040188949 Seal assembly for reciprocating shaft |
| 09/30/2004 | US20040188101 Enclosed radial wire-line cable conveying method and apparatus |
| 09/30/2004 | US20040188099 Method of creating a casing in a borehole |
| 09/30/2004 | US20040188095 Cuttings injection and annulus remediation systems for wellheads |
| 09/30/2004 | US20040188091 Zeolite-containing settable spotting fluids |
| 09/30/2004 | US20040188087 Adjustable hanger system and method |
| 09/30/2004 | US20040188083 Flow completion system |
| 09/30/2004 | CA2519738A1 Restricting fluid passage and novel materials therefor |
| 09/29/2004 | EP1276956B1 Coiled tubing line deployment system |
| 09/29/2004 | EP0938621B1 Communication conduit in a well tool |
| 09/29/2004 | CN2644664Y Compression packer |
| 09/29/2004 | CN2644663Y Leak-preventing device for rod-pumped well |
| 09/29/2004 | CN1533465A Wellbore system with annular seal member |
| 09/29/2004 | CN1168889C Packer for high-temp thermal production |
| 09/28/2004 | US6796381 Apparatus for extraction of oil via underground drilling and production location |
| 09/28/2004 | US6796377 Anti-rotation apparatus for limiting rotation of cementing plugs |
| 09/28/2004 | US6796376 Composite bridge plug system |
| 09/28/2004 | CA2423645A1 Manifold device and method of use for accessing a casing annulus of a well |
| 09/28/2004 | CA2277563C Multi-port cementing head |
| 09/28/2004 | CA2212743C Open hole straddle system and method for setting such a system |
| 09/28/2004 | CA2123533C Electrical connection |
| 09/23/2004 | WO2004081339A1 Methods and compositions for sealing oil containing subterranean zones |
| 09/23/2004 | WO2004081338A1 Reverse circulation cementing system and method |
| 09/23/2004 | WO2004063519A3 Blow out preventer handling system |
| 09/23/2004 | WO2004018825B1 Riser connector |
| 09/23/2004 | WO2003106130A3 Collapsible expansion cone |
| 09/23/2004 | WO2003095873A3 Metal end cap seal with pressure trap |
| 09/23/2004 | US20040186420 Hydraulic coupler |
| 09/23/2004 | US20040182583 Expandable packer with anchoring feature |
| 09/23/2004 | US20040182582 Method of sealing an annulus |
| 09/23/2004 | US20040182576 Well treatment fluid and methods with oxidized polysaccharide-based polymers |
| 09/23/2004 | US20040182575 Well treatment fluid and methods with oxidized polysaccharide-based polymers |
| 09/23/2004 | US20040182569 Apparatus for expanding a tubular member |
| 09/22/2004 | EP1356188B1 Fluid mixing system |
| 09/22/2004 | EP1169545B1 Downhole tool with thermal compensation |
| 09/22/2004 | EP1165934B1 Apparatus for maintaining uniform pressure within an expandable well tool |
| 09/22/2004 | EP1027396B1 Drilling and cementing through shallow waterflows |
| 09/22/2004 | CN2642987Y Casing well cementing cementing-head |
| 09/22/2004 | CN2642986Y Filling mechanism |
| 09/22/2004 | CN2642985Y Hydraulic pressure sealing device for well mouth |
| 09/22/2004 | CN2642984Y Polish-rod sealing device |
| 09/21/2004 | US6793730 Methods of cementing |
| 09/21/2004 | US6793022 Spring wire composite corrosion resistant anchoring device |
| 09/21/2004 | US6793017 Method and apparatus for transferring material in a wellbore |
| 09/21/2004 | CA2224668C Method and apparatus for hybrid element casing packer for cased-hole applications |
| 09/21/2004 | CA2121636C Hydraulic port collar |
| 09/16/2004 | WO2004079159A1 Methods and compositions for consolidating proppant in fractures |
| 09/16/2004 | WO2004079156A1 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 09/16/2004 | WO2004079155A2 Methods and apparatus for handling and drilling with tubulars or casing |
| 09/16/2004 | WO2004079145A2 Method for drilling and completing wells |
| 09/16/2004 | WO2004067905A3 Well packer inflation system and method of inflating same |
| 09/16/2004 | WO2004065757A3 Autonomous well intervention system |
| 09/16/2004 | WO2004029487B1 Metal seal with corrosion resistant alloy overlay |
| 09/16/2004 | WO2004022902B1 Tie-back connection for subsea well |
| 09/16/2004 | US20040180794 Methods and compositions for sealing oil containing subterranean zones |
| 09/16/2004 | US20040180793 Method and system for cement lining a wellbore |
| 09/16/2004 | US20040178001 Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling |
| 09/16/2004 | US20040177969 Flowhead and method |
| 09/16/2004 | US20040177967 Packer with integral cleaning device |
| 09/16/2004 | US20040177962 Reverse circulation cementing system and method |
| 09/16/2004 | US20040177952 Resin impregnated continuous fiber plug with non-metallic element system |
| 09/15/2004 | EP1456501A2 Method and apparatus for replacing bop with gate valve |
| 09/15/2004 | EP1278933B1 Internal gate valve for flow completion systems |
| 09/15/2004 | EP1268361B1 Cementing compositions and application of these compositions to cementing oil wells or the like |
| 09/15/2004 | EP1204616B1 A low-density and low-porosity cementing slurry for oil wells or the like |
| 09/15/2004 | EP1133617B1 Wellbore system including a conduit and an expandable device |