| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 07/20/1994 | CN2172342Y Disposable sealing tool for repairing oil well |
| 07/20/1994 | CN1089683A Material for sealing borehole |
| 07/20/1994 | CA2111995A1 Turbine pump ring for drilling heads |
| 07/19/1994 | US5330201 Sealing assembly |
| 07/19/1994 | US5330007 Template and process for drilling and completing multiple wells |
| 07/19/1994 | US5330006 Oil mud displacement with blast furnace slag/surfactant |
| 07/19/1994 | US5330002 Hanger assembly |
| 07/19/1994 | US5330000 Squeeze packer latch |
| 07/19/1994 | US5329999 For a cased well |
| 07/12/1994 | US5327975 Tubing anchor catcher with rotating mandrel |
| 07/12/1994 | US5327972 Wellhead system |
| 07/12/1994 | US5327969 Method of preventing gas migration during primary well cementing |
| 07/12/1994 | US5327966 Wellhead equipment |
| 07/12/1994 | US5327965 Wellhead completion system |
| 07/12/1994 | US5327963 Tubular coupling device |
| 07/12/1994 | US5327962 Well packer |
| 07/12/1994 | US5327961 Drive head for downhole rotary pump |
| 07/12/1994 | CA2094884C Cementing apparatus |
| 07/07/1994 | WO1994015063A1 Plugs for use in wellbores |
| 07/07/1994 | WO1994015062A1 Anti-rotation devices for use with well tools |
| 07/06/1994 | CN2171005Y Well head sealing device |
| 07/05/1994 | US5325925 Sealing method and apparatus for wellheads |
| 06/28/1994 | US5324051 Fluid-assisted dust seal |
| 06/28/1994 | US5323860 Apparatus for connecting a diverter assembly to a blowout preventer stack |
| 06/28/1994 | US5323858 Case cementing method and system |
| 06/28/1994 | US5323854 Tubing hanger seal for water wells |
| 06/23/1994 | WO1994013929A1 Method and apparatus for cleaning wellbore perforations |
| 06/22/1994 | CN2169685Y Automatic diameter adjustable oil pumping rod self seal |
| 06/21/1994 | US5322392 Process for rock consolidation and/or cavity filling e.g. in tunnel construction and mining |
| 06/21/1994 | US5322137 Rotating head with elastomeric member rotating assembly |
| 06/21/1994 | US5322127 Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells |
| 06/21/1994 | CA2049880C Compact, retrievable packer |
| 06/21/1994 | CA2028555C Stuffing box |
| 06/21/1994 | CA2009810C Retrievable bridge plug and packer |
| 06/15/1994 | EP0601948A1 Plugging device for the injection and retention of a treatment product in a masonry wall |
| 06/15/1994 | EP0601687A1 Boring apparatus |
| 06/15/1994 | CN2168951Y Assembled shaft collar for sucking well |
| 06/15/1994 | CN1087968A Ring seal packer |
| 06/14/1994 | US5320325 Position instrumented blowout preventer |
| 06/14/1994 | US5320183 Locking apparatus for locking a packer setting apparatus and preventing the packer from setting until a predetermined annulus pressure is produced |
| 06/14/1994 | US5320182 Downhole pump |
| 06/14/1994 | US5320172 Method for improving cement placement in horizontal wells |
| 06/14/1994 | CA2021310C Inflatable straddle packer |
| 06/12/1994 | CA2095202A1 Ring seal packer |
| 06/08/1994 | EP0599964A1 Pack-off tool |
| 06/07/1994 | US5318132 Retrievable whipstock/packer assembly and method of use |
| 06/07/1994 | US5318131 Hydraulically actuated liner hanger arrangement and method |
| 06/07/1994 | US5318128 Method and apparatus for cleaning wellbore perforations |
| 06/07/1994 | US5318118 Cup type casing packer cementing shoe |
| 06/07/1994 | US5318117 Non-rotatable, straight pull shearable packer plug |
| 06/01/1994 | EP0599423A2 Slat retention for inflatable packer |
| 06/01/1994 | EP0599422A2 Inflatable packer inner bladder retention and seal |
| 06/01/1994 | EP0599420A2 Sealing element for inflatable packer |
| 06/01/1994 | EP0438455B1 Arrangement for protecting components in subsea systems |
| 06/01/1994 | EP0382760B1 Connector for fluid carrying conduits |
| 05/31/1994 | US5316089 Method and apparatus for drilling a subsea well |
| 05/31/1994 | US5316084 Well tool with sealing means |
| 05/31/1994 | US5316081 Flow and pressure control packer valve |
| 05/26/1994 | WO1994011610A1 Case cementing method and system |
| 05/26/1994 | CA2103096A1 Inflatable packer inner bladder retention and seal |
| 05/26/1994 | CA2103095A1 Sealing element for inflatable packer |
| 05/26/1994 | CA2103094A1 Slat retention for inflatable packer |
| 05/25/1994 | EP0598558A1 Sub-surface release plug apparatus |
| 05/25/1994 | EP0426773B1 Undersea package and installation system |
| 05/25/1994 | CN2166216Y Anti-theft simple christmas tree |
| 05/24/1994 | US5314024 Angular and radial self-aligning coupling |
| 05/24/1994 | US5314023 Method for selectively treating wells with a low viscosity epoxy resin-forming composition |
| 05/24/1994 | US5314022 Dilution of drilling fluid in forming cement slurries |
| 05/24/1994 | US5314019 Method for treating formations |
| 05/24/1994 | US5314015 For use in a well bore |
| 05/24/1994 | US5314014 Packer and valve assembly for temporary abandonment of wells |
| 05/18/1994 | EP0597306A1 Ram type blowout preventer with improved seal |
| 05/17/1994 | US5311947 Preselected casing tensioning system |
| 05/17/1994 | US5311940 Cementing plug |
| 05/17/1994 | US5311939 For engaging/sealing against the inside of a conduit |
| 05/17/1994 | US5311938 Retrievable packer for high temperature, high pressure service |
| 05/17/1994 | CA2061958C Wellhead housing seal assembly for damaged sealing surfaces |
| 05/11/1994 | WO1994010420A1 Retrievable whipstock/packer assembly and method of use |
| 05/11/1994 | EP0595907A1 Improved sub-sea test tree apparatus |
| 05/11/1994 | CN1086576A Method for drilling and cementing a well |
| 05/11/1994 | CN1086575A Drilling and cementing a well |
| 05/10/1994 | US5310286 Cased glory hole system |
| 05/10/1994 | US5310006 Satellite tree module and flow line structure for interconnection of a satellite well to a subsea production system |
| 05/10/1994 | US5309996 Methods of primary cementing of wells |
| 05/10/1994 | US5309995 Well treatment using ball sealers |
| 05/10/1994 | US5309993 Chevron seal for a well tool |
| 05/10/1994 | US5309991 Wellhead connector |
| 05/10/1994 | US5309989 Oil well fire extinguishing apparatus |
| 05/04/1994 | CN2163866Y Cement slurry underground magnetizer |
| 05/04/1994 | CN1024425C Process for selective blocking middle and high osmotic zone of under-ground oil gas area |
| 05/03/1994 | US5307886 Method for casing a hole drilled in a formation |
| 05/03/1994 | US5307879 Positive lockdown for metal seal |
| 05/03/1994 | US5307874 Method for treating formations with gelatin |
| 05/03/1994 | CA1328991C Flexible grout composition and method |
| 04/29/1994 | CA2081624A1 System for the control and monitoring of surface or subsea hydrocarbon production |
| 04/28/1994 | WO1994009252A1 Drilling and cementing a well |
| 04/28/1994 | WO1994009249A1 Method for drilling and cementing a well |
| 04/28/1994 | CA2147492A1 Drilling and cementing a well |
| 04/28/1994 | CA2147490A1 Method for drilling and cementing a well |
| 04/27/1994 | EP0594390A2 Stage cementing well tool |