| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/05/2006 | US20060000993 Cement flow control tool |
| 01/05/2006 | US20060000992 Blowout preventer and movable bonnet support |
| 01/05/2006 | US20060000620 Isolation tool |
| 01/05/2006 | US20060000617 Coupling and sealing tubulars in a bore |
| 01/05/2006 | US20060000616 Hydraulic downhole oil recovery system |
| 01/05/2006 | US20060000612 Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 01/05/2006 | US20060000611 use of hydraulic cement compositions comprising water, cement, and non-amorphous metallic fibers having a mean aspect ratio of about 1.25 to about 400 |
| 01/05/2006 | US20060000610 Methods of fracturing sensitive formations |
| 01/05/2006 | US20060000599 Connecting mechanism |
| 01/05/2006 | CA2472903A1 Convertible snubber |
| 01/04/2006 | EP1611313A2 Restricting fluid passage and novel materials therefor |
| 01/04/2006 | EP1611311A1 System and method for treating drilling mud in oil and gas well drilling applications |
| 01/04/2006 | CN2750037Y 酸化封隔器 Acidification packer |
| 01/04/2006 | CN2750036Y Rod or shaft sealing device capable of regulating deflection abrasion |
| 01/04/2006 | CN1715613A Marmen oil field pumping pipe blocking device |
| 01/04/2006 | CN1715319A Hydrogenized nitrile butadiene rubber and para aromatic polyamide fibre composite material and its preparing method |
| 01/03/2006 | US6982000 Cement compositions including silane treated amorphous silica |
| 01/03/2006 | US6981552 Well treatment fluid and methods with oxidized polysaccharide-based polymers |
| 01/03/2006 | CA2392333C Tubing string rotator |
| 01/02/2006 | CA2510951A1 Reactive sealing compositions for sealing hydrocarbon containing subterranean formations and methods |
| 12/29/2005 | US20050288190 Methods and compositions for reducing subterranean formation permeabilities |
| 12/29/2005 | US20050286990 Tightening system for secure connection of at least two elements with one another |
| 12/29/2005 | US20050284666 Geosynthetic composite for borehole strengthening |
| 12/29/2005 | US20050284641 Controlled variable density fluid for wellbore operations |
| 12/29/2005 | US20050284640 Nested velocity string tubing hanger |
| 12/29/2005 | US20050284639 Pressure-compensated flow shut-off sleeve for wellhead and subsea well assembly including same |
| 12/29/2005 | US20050284637 Methods of treating subterranean formations using low-molecular-weight fluids |
| 12/29/2005 | US20050284636 Resistive down hole heating tool |
| 12/28/2005 | EP1610007A1 Tightening system for secure connection of at least two element with one another |
| 12/28/2005 | EP1608842A1 Reverse circulation cementing system and method |
| 12/28/2005 | EP1608839A2 Method and apparatus to complete a well having tubing inserted through a valve |
| 12/28/2005 | EP1290311B1 Sequential hydraulic control system for use in subterranean well |
| 12/28/2005 | EP1175549B1 Rotating blowout preventer |
| 12/28/2005 | EP1012442B1 A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
| 12/28/2005 | CN2748631Y Quickly connecting and self-falling disassembled indicator cementing-head |
| 12/28/2005 | CN2748630Y Multifunctional anti-theft plug |
| 12/28/2005 | CN1714226A Well treating process and system |
| 12/28/2005 | CN1712747A Tightening system for secure connection of at least two elements with one another |
| 12/27/2005 | US6978844 Filling and circulating apparatus for subsurface exploration |
| 12/27/2005 | US6978839 Internal connection of tree to wellhead housing |
| 12/27/2005 | US6978835 Methods of cementing in subterranean formations |
| 12/27/2005 | CA2403876C Internal gate valve for flow completion systems |
| 12/27/2005 | CA2403866C Tubing hanger with annulus bore |
| 12/27/2005 | CA2316038C Composition and method for cementing a well |
| 12/27/2005 | CA2309218C Plug for use in wellbore operations and apparatus for launching said plug |
| 12/27/2005 | CA2303091C A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
| 12/27/2005 | CA2241223C Stuffing box gland |
| 12/22/2005 | WO2005122313A2 Method and apparatus for performing chemical treatments of exposed geological formations |
| 12/22/2005 | WO2005121499A1 Methods, cement compositions and suspending agents therefor |
| 12/22/2005 | WO2005121498A1 Sealing system |
| 12/22/2005 | WO2005121497A1 Drilled well end section |
| 12/22/2005 | WO2005059297A3 Method of using a multipurpose unit with multipurpose tower and a surface blow out preventer |
| 12/22/2005 | US20050279510 Method and System to Deploy Control Lines |
| 12/22/2005 | US20050279504 Intervention spool for subsea use |
| 12/22/2005 | US20050279503 Slickline power control interface |
| 12/22/2005 | US20050279502 Cement compositions with improved fluid loss characteristics and methods of cementing using such cement compositions |
| 12/22/2005 | US20050279499 Downhole sampling tool and method for using same |
| 12/22/2005 | US20050279494 Logging Plug with High Integrity Internal Seal |
| 12/22/2005 | CA2568593A1 Method and apparatus for performing chemical treatments of exposed geological formations |
| 12/22/2005 | CA2567092A1 Geosynthetic composite for borehole strengthening |
| 12/22/2005 | CA2565171A1 Aqueous tackifier and methods of controlling particulates |
| 12/21/2005 | EP1606526A2 Method for preventing critical annular pressure buildup |
| 12/21/2005 | CN2747353Y Well head device for electric pump well |
| 12/21/2005 | CN1711407A A method and apparatus for creating a cemented lateral junction system |
| 12/20/2005 | US6977499 Formation-based interpretation of NMR data for carbonate reservoirs |
| 12/20/2005 | US6977367 Providing a light cell in a wellbore |
| 12/20/2005 | US6976541 Liner hanger with sliding sleeve valve |
| 12/20/2005 | US6976539 Tubing anchor |
| 12/20/2005 | US6976537 pumping a gellable composition of an acidic aqueous liquid and a superabsorbent polymer into a wellbore; raising the pH to form a gel, filling lost circulation zones |
| 12/20/2005 | US6976534 Slip element for use with a downhole tool and a method of manufacturing same |
| 12/20/2005 | CA2440086C Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use |
| 12/20/2005 | CA2196352C Activation of downhole tools |
| 12/18/2005 | CA2510212A1 Method and system to deploy control lines |
| 12/15/2005 | WO2005095534A3 Fluid loss additives for cement slurries |
| 12/15/2005 | WO2005028804A3 Compact mid-grip fastener |
| 12/15/2005 | US20050274528 Valve Within a Control Line |
| 12/15/2005 | US20050274526 Casing hanger with integral load ring |
| 12/15/2005 | US20050274525 Floating plate back pressure valve assembly |
| 12/15/2005 | US20050274521 Cement heating tool for oil and gas well completion |
| 12/15/2005 | US20050274519 Methods, cement compositions and suspending agents therefor |
| 12/15/2005 | US20050274509 System for reducing adhesion and cohesion between non metallic bailers and side wall of wells |
| 12/15/2005 | US20050274291 Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations |
| 12/15/2005 | DE10210331B4 Verfahren zur Verhinderung des Entstehens eines zündfähigen Gemisches bei einer in gasführende Hohlräume von abgeworfenen Abbaubereichen des Steinkohlenbergbaus reichende Tiefbohrung A method for preventing the development of an ignitable mixture in a gas-leading cavities of discarded mining areas of the coal industry reaching deep drilling |
| 12/14/2005 | EP1604093A2 Method and apparatus for drilling a borehole with a borehole liner |
| 12/14/2005 | EP1604092A2 Method for drilling and completing wells |
| 12/14/2005 | EP1478825A4 Tubing hanger with ball valve in the annulus bore |
| 12/14/2005 | EP1173655B1 Ribbed sealing element and method of use |
| 12/14/2005 | EP1169544B1 Method of manufacturing a wall thickness program into an elastomeric tubular component for incorporation into a packing device for use in a subterranean well |
| 12/14/2005 | CN2746118Y Reducing flashboard for well drilling |
| 12/14/2005 | CN2746117Y Simple reducing flashboard for well drilling |
| 12/14/2005 | CN2746116Y Polish rod anti-blowout sealing device |
| 12/14/2005 | CN1708631A Annular isolators for expandable tubulars in wellbores |
| 12/14/2005 | CN1708630A Once-through well completion |
| 12/14/2005 | CN1231653C Method of regulating water sucking section of deep oil layer |
| 12/13/2005 | US6974341 Subsea well electrical connector |
| 12/13/2005 | US6974135 Variable bore ram |
| 12/13/2005 | US6973969 Apparatus and methods for preventing or limiting rotation of cementing plugs |
| 12/13/2005 | US6973966 Compressible darts and methods for using these darts in subterranean wells |
| 12/13/2005 | US6973936 Fluid injection system |
| 12/08/2005 | WO2005116396A2 Subterranean fluids and methods of cementing in subterranean formations |