Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
02/1992
02/19/1992CN1058798A Foam for improving sweep efficiency in subterranean oil-bearing formations
02/18/1992US5088559 Method and apparatus for running wireline and reeled tubing into a wellbore and stuffing box used in connection therewith
02/18/1992US5088558 Undersea package and installation system
02/18/1992US5088556 Subsea well guide base running tool
02/11/1992WO1992002708A1 Foam for improving sweep efficiency in subterranean oil-bearing formations
02/11/1992US5086850 Well bore drilling direction changing method
02/11/1992US5086839 Well packer
02/11/1992US5086802 Safety check valve
02/11/1992CA1295548C Well packer with internally adjustable shear release mechanism
02/06/1992WO1992001840A1 Apparatus for injecting soil conditioning fluid
02/06/1992DE3625393C1 Hole plug
02/05/1992EP0469140A1 Device for protecting wells from corrosion or deposits caused by the nature of the fluid produced or located therein.
02/04/1992US5085277 Sub-sea well injection system
02/04/1992US5085273 Casing lined oil or gas well
02/01/1992CA2046566A1 Stripper rubbers for drilling heads
01/1992
01/29/1992EP0468668A2 Rotary locking system with metal seals
01/28/1992CA2040013A1 Blowout preventer
01/28/1992CA1294869C Permanent anchor for use with through tubing bridge plug
01/26/1992CA2046805A1 Rotary locking system with metal seals
01/22/1992EP0467573A2 Subsurface pressure actuated well apparatus
01/21/1992US5082577 Method and composition for selectively reducing permeability to water in hydrocarbon reservoirs which are hot and saline
01/21/1992US5082062 Horizontal inflatable tool
01/21/1992US5082061 Rotary locking system with metal seals
01/21/1992US5082060 Subsea well hanger
01/21/1992US5082020 Valve body for oilfield applications
01/21/1992US5081909 Releasable latch mechanism for attaching an actuator to a valve
01/21/1992CA1294540C2 Adjustable cement head manifold
01/21/1992CA1294539C2 Adjustable cement head manifold
01/15/1992EP0465623A1 Method and apparatus for sealing pipe perforations
01/14/1992US5080400 Double lobe tubular connector clamp
01/14/1992US5080174 Hydraulic packoff and casing hanger installation tool
01/14/1992US5080173 Tieback wellhead system with sidetrack facilities
01/14/1992CA1294212C Cementing plug container with remote control system and method of injecting cementing plugs
01/14/1992CA1294198C Method and apparatus for repairing casings and the like
01/14/1992CA1294112C Insitu hazardous waste treating apparatus and method of using same
01/13/1992CA2046714A1 Accelerating set of retarded cement
01/10/1992CA2046470A1 Method and apparatus for actuating a downhole tool
01/09/1992WO1992000438A1 Subsea pump system
01/08/1992EP0464340A2 Apparatus and method for inserting a pump within a conduit
01/08/1992CN2092598U Heating-powered bridging plugs of dredge-up type
01/07/1992US5078212 Emplacement of filter packs and seals for groundwater monitoring
01/07/1992US5078211 Plastic packer
01/02/1992EP0463664A1 Treating an underground formation
01/02/1992EP0463661A1 Anti-rotation device for cementing plugs with deformable peripheral "fins" or "lips"
12/1991
12/31/1991US5076356 Wellhead equipment
12/26/1991WO1991019926A1 Improved quick disconnect coupling
12/26/1991WO1991019883A1 Tools for wells
12/26/1991WO1991019882A1 Tools for wells
12/25/1991CN2091349U Expansion glue tube
12/24/1991US5074518 Proportional annular B.O.P. controller
12/24/1991CA1293374C Casing slip gague
12/17/1991US5072755 Quick disconnect coupling
12/12/1991WO1991018686A1 Automated scraping unit
12/11/1991EP0460993A2 Multiple cup bridge plug for sealing a well casing
12/11/1991EP0460902A2 Drill pipe bridge plug and method of use
12/11/1991CN2090415U Safety blowout hookup for wireline test
12/10/1991US5070950 Remote controlled actuation device
12/10/1991US5070942 Well tubing hanger sealing assembly
12/10/1991US5070904 BOP control system and methods for using same
12/05/1991CA2119387A1 Method of stopping flow of fluid up through a pipe bore of a pipe string in a wall
12/05/1991CA2119386A1 Retrievable bridge plug apparatus for sealing a pipe bore in a pipe string
12/04/1991EP0459649A1 Inflatable buoyant near surface riser disconnect system
12/03/1991US5069288 Single trip casing hanger/packoff running tool
12/03/1991US5069287 Retrievable guide base for subsea well
12/03/1991US5069281 Process for enhanced delayed in situ gelation of chromium polyacrylamide gels
12/03/1991US5069280 Gravel packer and service tool
12/03/1991US5069278 Leakage control device
12/03/1991CA1292676C Well casing packers
12/03/1991CA1292675C Wellhead isolation tool
12/01/1991CA2038191A1 Inflatable buoyant near surface riser disconnect system
11/1991
11/28/1991DE4017013A1 Equipment for cleaning well shafts - involves staged frame moving along shaft walls with horizontal dividers forming sealed chambers
11/27/1991CN2089521U Blocking device for oil field
11/26/1991US5067734 Metal seal with grooved inlays
11/26/1991US5067564 Selective placement of a permeability-reducing material to inhibit fluid communication between a near well bore interval and an underlying aquifer
11/26/1991US5067563 Spillproof oil well seal
11/21/1991EP0457653A1 Safety sleeve and device for wells, particularly for a subterranean reservoir of fluid under pressure
11/21/1991EP0457563A2 Slant rig cementing apparatus
11/20/1991CN2089067U Check valve for drill pipe
11/19/1991WO1991018180A1 Preform device and processes for coating and/or lining a cylindrical volume
11/19/1991US5066048 Weight set connecting mechanism for subsea tubular members
11/16/1991CA2042557A1 Lift through plug container for slant rig
11/13/1991EP0456397A1 Sequential remote control plug release system for wells
11/13/1991CN2088593U Electric submersible pump cable well top sealing device
11/12/1991WO1991018182A1 Production systems for underwater wells
11/12/1991US5064164 Bop seal with improved metal inserts
11/12/1991US5063996 Apparatus for protecting an environmental monitoring well head
11/12/1991CA2082652A1 Production systems for underwater wells
11/12/1991CA2042256A1 Safety sleeve for a borehole communicating with an underground reserve of fluid under pressure, and associated safety system, and an associated borehole operating method
11/12/1991CA1291947C Packing-seal for boreholes
11/12/1991CA1291945C Modular near-surface completion system
11/12/1991CA1291923C Hydraulic power system
11/06/1991EP0455328A1 Subterranean well welding habitat
11/05/1991US5062667 Connection seal
11/05/1991US5062479 Stripper rubbers for drilling heads
11/05/1991US5062450 Valve body for oilfield applications
11/05/1991CA1291705C Wellhead hanger and seal
11/03/1991WO1991017340A1 Anti-rotation device for use in wellbores
11/03/1991CA2081780A1 Anti-rotation device for use in wellbores
10/1991
10/31/1991WO1991016523A1 A system for the control and monitoring of surface or subsea hydrocarbon production
10/30/1991EP0454466A2 Drillable well bore packing apparatus