E21B 33 - Sealing or packing boreholes or wells

Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
11/2007
11/22/2007	WO2006078883A3 Double swivel apparatus and method
11/22/2007	WO2002079659A3 Method for preventing critical annular pressure buildup
11/22/2007	US20070267201 Annular Isolators for Expandable Tubulars in Wellbores
11/22/2007	CA2856637A1 Weighted zero solids loss circulation, fluid loss and insulating annular space fluid systems
11/22/2007	CA2589600A1 Methods and apparatus for drilling with casing
11/21/2007	EP1856372A1 An apparatus and a method for deployment of a well intervention tool string into a subsea well
11/21/2007	EP1856371A1 Centralization and running tool and method
11/21/2007	CN200978650Y Mechanical type sand-proof control leather bowl
11/21/2007	CN200978649Y Packer for side drilling well
11/21/2007	CN200978648Y Combined type oil line plugging device
11/21/2007	CN200978647Y High temperature gas injection well blowout prevention device
11/21/2007	CN200978646Y Permanent-magnet anti-theft multifunctional well mouth device
11/21/2007	CN200978645Y Self-control blow-out preventing box
11/21/2007	CN200978644Y Oil field water injection well port device
11/21/2007	CN101076652A Wellbore system extending through a salt layer
11/21/2007	CN101073798A Pulse vibration generator and generation
11/20/2007	US7297663 Method of decreasing lost circulation during well operations and additive therefor
11/20/2007	US7297208 Cement compositions comprising strength-enhancing lost circulation materials and methods of cementing in subterranean formations
11/20/2007	US7297207 Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations
11/20/2007	US7296631 System and method for low-pressure well completion
11/20/2007	US7296629 Subsea completion system, and methods of using same
11/20/2007	US7296626 Mixing a cement with water and an aqueous suspension of zeolite and a chromate reducing agent; cementing in a subterranean zone
11/20/2007	US7296625 Methods of forming packs in a plurality of perforations in a casing of a wellbore
11/20/2007	US7296623 Methods and apparatus for applying torque and rotation to connections
11/20/2007	CA2489235C Plug concealment and diversion tool
11/20/2007	CA2419231C Underwater tool with sealing device
11/20/2007	CA2363857C Concentric casing jack
11/15/2007	WO2007107015B1 Drilling fluid and method for reducing lost circulation
11/15/2007	US20070262582 Spring-biased pin connection system
11/15/2007	US20070261863 Sealing system
11/15/2007	US20070261862 Frac System without Intervention
11/15/2007	US20070261850 Stage cementing methods used in casing while drilling
11/15/2007	US20070261849 Servicing a wellbore with an aqueous based fluid comprising a clay inhibitor
11/15/2007	US20070261848 Weighted zero solids loss circulation, fluid loss and insulating annular space fluid systems
11/15/2007	US20070261847 Sealing Device for Plugging a Pipe or a Well
11/14/2007	EP1855080A2 Method and device for measuring a distance travelled
11/14/2007	EP1853791A1 System and method for well intervention
11/14/2007	CN200975232Y Automatically mud grouting controlling valve for casing
11/14/2007	CN200975231Y Rotation preventing cementing plug
11/14/2007	CN200975230Y Waterpower pulse vibration cementing guide shoe
11/14/2007	CN200975229Y Incline well centralizing type packer
11/14/2007	CN200975228Y Anti-blocking sprayer for test borehole testing
11/14/2007	CN200975227Y Oil pipe blowout prevention blocking equipment of oil gas well
11/14/2007	CN200975226Y Oil well casing tube oil leaking stopper and mounting tools thereof
11/14/2007	CN101070754A In-advance sand-preventing device for open horizontal well
11/14/2007	CN101070753A Anti-theft oil-production tree
11/13/2007	US7294194 For sealing a subterranean zone penetrated by a wellbore
11/13/2007	US7293941 Water, brines, seawater or saturated salt solutions and a disulfonate salt of 2,4-pentanedione; nontoxic
11/13/2007	US7293609 Treatment fluids comprising vitrified shale and methods of using such fluids in subterranean formations
11/13/2007	US7293437 Gasket and washing machine using the same
11/13/2007	CA2461233C Hybrid wellhead system and method of use
11/13/2007	CA2403881C Tubing hanger system with gate valve
11/13/2007	CA2401075C Wellbore circulation system
11/13/2007	CA2357376C Tubing string anchoring tool
11/10/2007	CA2588297A1 Method and apparatus for stimulating production from oil and gas wells by freeze-thaw cycling
11/08/2007	US20070257441 Sealing of a Wellbore Device in a Tubular Element
11/08/2007	US20070257405 Method and a Device for Expanding a Body Under Overpressure
11/08/2007	US20070256829 Apparatus for wellbore communication
11/08/2007	CA2649843A1 Method and chemical agent for reduction of water production from oil and gas containing wells
11/07/2007	EP1852718A2 Downhole NMR processing
11/07/2007	CN200971780Y Measuring instrument for packer of water injection well
11/07/2007	CN200971772Y Relay plunger gas-life oil or gas production device
11/07/2007	CN200971766Y Flushing packer
11/07/2007	CN200971765Y Conjuncted umbrella type packer
11/07/2007	CN200971764Y Tube plug for concentric profile control well
11/07/2007	CN200971763Y High pressure closed telescopic joint for snubbing service
11/07/2007	CN200971762Y Guide sealing device
11/07/2007	CN200971761Y Cap fixator for packing box of pumping well
11/07/2007	CN101067366A Air-filling well-drilling sealing device
11/07/2007	CN100347400C Open eccentric packing box
11/06/2007	US7290617 Running a completion assembly without killing a well
11/06/2007	US7290613 Cement compositions comprising aromatic sulfonated polymers and methods of using the same
11/06/2007	US7290612 Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore
11/06/2007	US7290611 Methods and systems for cementing wells that lack surface casing
11/06/2007	US7290609 Subterranean well secondary plugging tool for repair of a first plug
11/06/2007	US7290603 Downhole plug
11/06/2007	CA2283015C Permeability or fluid mobility reduction treatment for a hydrocarbon-bearing formation using a dual molecular weight polymer gel
11/04/2007	CA2587761A1 Stuffing box with wear indicator
11/01/2007	WO2007122365A1 Apparatus and method for severing a wellbore tubular
11/01/2007	WO2007101444A3 System for injecting a substance into the space surrounding a well tubular
11/01/2007	US20070251702 Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
11/01/2007	CA2649412A1 Aqueous gels for well bore strengthening
10/2007
10/31/2007	EP1540131B1 "top drive swivel apparatus and method"
10/31/2007	EP1373681B1 A method for pressure- and flow-preventive fixing of pipes in a well
10/31/2007	CN200968198Y Telescopic compression sealing grouting device
10/31/2007	CN200968197Y Well cementing apparatus
10/31/2007	CN200968196Y Non sieve tube weighing drill stem plug capturing blowout preventer
10/31/2007	CN200968195Y Permanent type sealing anchoring packer
10/31/2007	CN200968194Y Hoisting-hanging oil layer switch
10/31/2007	CN200968193Y Rotating blowout preventer holddown
10/31/2007	CN200968192Y Coal bed gas well head arrangement
10/31/2007	CN200968191Y Environment-friendly type password anti-theft well mouth cap
10/31/2007	CN100346053C Automatic boosting oil production and liquid discharge gas producing device and method for underwell gas
10/30/2007	US7287599 Casing packoff system
10/30/2007	US7287598 Apparatus for, and method of, landing items at a well location
10/30/2007	US7287595 Electric-hydraulic power unit
10/30/2007	US7287591 Primary electro-mechanical initiating dump bailer device and method of use
10/30/2007	US7287586 introducing a sealing agent and a water-swellable agent into the subterranean formation; sealing agent is a monomer; hydrocarbon wells
10/28/2007	CA2722327A1 Quick-change wear sleeve for a high-pressure fluid conduit and method of refubishing same
10/25/2007	WO2007121350A1 Packer sealing element with shape memory material

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