| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 05/19/2009 | CA2564190C Hydraulically set concentric packer with multiple umbilical bypass through the piston |
| 05/19/2009 | CA2400991C Foundation for suction in installation of conductor casing |
| 05/19/2009 | CA2337122C Method of controlling particulate flowback in subterranean wells and introducing treatment chemicals |
| 05/14/2009 | WO2009061826A1 Apparatus and method to grip and/or handle tubulars |
| 05/14/2009 | WO2009061768A2 Self-energizing annular seal |
| 05/14/2009 | WO2009060170A1 Methods of integrating analysis, auto-sealing, and swellable- packer elements for a reliable annular seal |
| 05/14/2009 | WO2008128066A3 Cement plug launch system |
| 05/14/2009 | US20090120648 Casing head slip lock connection for high temperature service |
| 05/14/2009 | US20090120647 Flow restriction apparatus and methods |
| 05/14/2009 | US20090120644 Reduced Carbon Footprint Settable Compositions for Use in Subterranean Formations |
| 05/14/2009 | US20090120643 Method of blocking water-out zone in a gas well by dumping cement and injecting pressurizing gas |
| 05/14/2009 | US20090120641 Well Flow Control Systems and Methods |
| 05/14/2009 | US20090120640 Methods of Integrating Analysis, Auto-Sealing, and Swellable-Packer Elements for a Reliable Annular Seal |
| 05/14/2009 | CA2704629A1 Riser system comprising pressure control means |
| 05/13/2009 | CN201236667Y Well cementing assisted tool of cement paste expansion sealing tube external packer |
| 05/13/2009 | CN201236666Y Minor-diameter horizontal well packer |
| 05/13/2009 | CN201236665Y Fast polished rod sealing device |
| 05/13/2009 | CN201236664Y Special shaft mouth apparatus of thick oil thermal production well |
| 05/13/2009 | CN201236663Y 21-35MPa clamp connection oil extraction and water injection shaft mouth apparatus |
| 05/13/2009 | CN201236662Y Oil pumping machine polished rod mechanical seal device capable of continuously adding stuffing under pressure |
| 05/13/2009 | CN201236661Y Combined shaft mouth lubricator |
| 05/13/2009 | CN201236660Y Blowout preventer for steam-filling shaft mouth |
| 05/13/2009 | CN201236659Y Polished rod lubricator of oil pumping well |
| 05/13/2009 | CN201236658Y Adjustable polished rod sealer |
| 05/13/2009 | CN201236654Y Oil field shaft mouth clamping seat |
| 05/13/2009 | CN201236649Y Closed flushing apparatus |
| 05/13/2009 | CN101429859A Anti-spraying packing kit |
| 05/13/2009 | CN101429858A Oil field shaft mouth clamping seat |
| 05/13/2009 | CA2643800A1 Casing head slip lock connection for high temperature service |
| 05/12/2009 | US7531483 Energized fluids and methods of use thereof |
| 05/12/2009 | US7530408 Method of consolidating an underground formation |
| 05/12/2009 | US7530401 Tool trap assembly and method |
| 05/12/2009 | US7530396 Self repairing cement compositions and methods of using same |
| 05/12/2009 | US7530395 Allowing a mixture of a calcium aluminate cement and a gelation inhibitor to set; inhibitors include terpolymers of methallyloxybenzenesulfonic acid or salts, methacrylic acid esters, and an acrylic amides |
| 05/12/2009 | US7530394 Cement compositions for low temperature applications |
| 05/12/2009 | CA2476360C Seal arrangement |
| 05/12/2009 | CA2447306C Packer fluid |
| 05/09/2009 | CA2643505A1 Apparatus and method for deliquifying a well |
| 05/07/2009 | WO2009056845A2 Connecting assembly |
| 05/07/2009 | WO2009056842A2 Object manoeuvring apparatus |
| 05/07/2009 | WO2009056840A2 Subsea assembly |
| 05/07/2009 | WO2009056839A2 Tool storage assembly |
| 05/07/2009 | WO2009009343A3 Methods and compositions for preventing high density well completion fluid loss |
| 05/07/2009 | WO2009007379A3 Method of lining a well or a pipe using an inflatable bladder |
| 05/07/2009 | US20090114450 Controlled Variable Density Fluid for Wellbore Operations |
| 05/07/2009 | US20090114401 Plug |
| 05/07/2009 | US20090114397 Hybrid wellhead system and method of use |
| 05/07/2009 | CA2704477A1 Object manoeuvring apparatus |
| 05/07/2009 | CA2704476A1 Subsea assembly |
| 05/07/2009 | CA2704306A1 Connecting assembly |
| 05/07/2009 | CA2704303A1 Tool storage assembly |
| 05/06/2009 | EP2055891A2 Method and apparatus for determining flow characteristics of a geological formation |
| 05/06/2009 | CN201232535Y Eccentric wellhead double pulley blowout prevention blowout preventer |
| 05/06/2009 | CN201232534Y Wellhead rapid spraying device |
| 05/06/2009 | CN201232533Y Adjustable wellhead strengthening blockage |
| 05/06/2009 | CN101427004A Sulfur barrier for use with in situ processes for treating formations |
| 05/06/2009 | CN101427003A Apparatus and method for severing a wellbore tubular |
| 05/06/2009 | CN101424173A Piston type thermal extraction casing head |
| 05/06/2009 | CN101424172A Installation and guide device for underwater basal disc for blowout preventer |
| 05/06/2009 | CN101424171A Wellhead sealing body |
| 05/06/2009 | CN100485159C Air well single-way closing agent and its formulating method |
| 05/05/2009 | US7527104 Selectively activated float equipment |
| 05/05/2009 | US7527099 System for sealing a space in a wellbore |
| 05/05/2009 | US7527098 Cementing wellbore using formulation containing water, a metal oxide or hydroxide compound, a phosphate compound, a borate compound, and a sugar; thickening time is sufficient to allow the cement to be placed in its desired location in the wellbore before setting |
| 05/05/2009 | US7527095 Method of creating a zonal isolation in an underground wellbore |
| 05/05/2009 | CA2629278C Stuffing box for progressing cavity pump drive |
| 05/05/2009 | CA2571149C Downhole fluid communication apparatus and method |
| 04/30/2009 | WO2009055164A2 Seal system and method |
| 04/30/2009 | WO2009053264A1 Running tool |
| 04/30/2009 | WO2009053263A1 Rotation mechanism |
| 04/30/2009 | WO2009052791A2 Device and method for activating or cleaning wells |
| 04/30/2009 | WO2009029143A4 Stripper rubber pot mounting structure and well drilling equipment comprising same |
| 04/30/2009 | WO2009023195A8 Control module for subsea equipment |
| 04/30/2009 | WO2009006326A3 Gravel-packing carrier fluid with internal breaker |
| 04/30/2009 | WO2008151314A8 Interventionless composite packer |
| 04/30/2009 | WO2008033120A3 Method and apparatus for perforating and isolating perforations in a wellbore |
| 04/30/2009 | WO2007061816A3 Controlling the pressure within an annular volume of a wellbore |
| 04/30/2009 | US20090107685 Wellhead Completion Assembly Capable of Versatile Arrangements |
| 04/30/2009 | US20090107677 Sealant Composition |
| 04/30/2009 | US20090107676 Methods of Cementing in Subterranean Formations |
| 04/30/2009 | US20090107665 Methods and Apparatus for Injecting Fluids at a Subterranean Location in a Well |
| 04/30/2009 | US20090107664 Hydraulic packer constructed in glass-fiber reinforced epoxi and stainless steel |
| 04/29/2009 | EP2053197A2 Rotating blow out preventer |
| 04/29/2009 | EP2053196A1 System and method for controlling the pressure in a wellbore |
| 04/29/2009 | EP2053195A1 Rotation Mechanism |
| 04/29/2009 | EP2053194A1 Running tool |
| 04/29/2009 | EP2052448A1 A subsea arrangement |
| 04/29/2009 | EP2052447A1 A subsea switchgear apparatus |
| 04/29/2009 | CN201228545Y Compensating mechanism for connection of thermal wellhead and ground pipeline |
| 04/29/2009 | CN201228536Y Double glue cylinders packer |
| 04/29/2009 | CN201228535Y Mechanism for removing seal for packer |
| 04/29/2009 | CN201228534Y High-strength sealing and steam injecting packer |
| 04/29/2009 | CN201228533Y Acidizing packer |
| 04/29/2009 | CN201228532Y Interlocking blowout prevention and anti-theft equipment for well head |
| 04/29/2009 | CN201228524Y Integral downhole process pipe column for separate layer testing and water shut off for pumping well |
| 04/29/2009 | CN101421486A Wellbore method and apparatus for sand and inflow control during well operations |
| 04/29/2009 | CN101418678A Striker structure for wellhead connector and method for making same |
| 04/28/2009 | US7524369 adding to the cement a base fluid, a density-reducing additive comprising fly ash sparticles and agglomerating cement such as portland; pozzolana; gypsum cement; high alumina content cement; silica cement; high alkalinity cement; placing the cement to a location needs to be cemented, allowing to be set |
| 04/28/2009 | US7523784 Method of using humic acid grafted fluid loss control additives in cementing operations |
| 04/28/2009 | CA2587916C Shear/seal ram assembly for a ram-type blowout prevention system |