| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 06/02/1987 | US4669536 Groundwater monitoring system |
| 06/02/1987 | CA1222535A1 Apparatus in which an annular ring is carried within a groove about one member for slidably engaging the cylindrical surface of another member |
| 06/02/1987 | CA1222447A1 Deviation hole plug |
| 05/26/1987 | US4667986 Wellhead connector |
| 05/26/1987 | CA1222205A1 Emergency release for subsea tool |
| 05/26/1987 | CA1222204A1 Insertion drive system for tree savers |
| 05/19/1987 | US4665992 Method and apparatus for installing packers in a well |
| 05/19/1987 | US4665979 Metal casing hanger seal with expansion slots |
| 05/19/1987 | US4665978 High temperature packer for well conduits |
| 05/19/1987 | US4665977 Tension set seal bore packer |
| 05/19/1987 | US4665976 For use with an oil well pump |
| 05/19/1987 | CA1221908A1 Method of preparing an inflatable packer for running |
| 05/19/1987 | CA1221857A1 Method for determining true fracture pressure |
| 05/12/1987 | US4664192 Cementing apparatus and methods |
| 05/12/1987 | US4664188 Retrievable well packer |
| 05/12/1987 | US4664185 Freeze proof control center for submersible pumps |
| 05/12/1987 | CA1221624A1 Inflatable packer release device |
| 05/12/1987 | CA1221623A1 Shear ram assembly |
| 05/12/1987 | CA1221622A1 Tension hanger embodying fire resistant sealing means |
| 05/12/1987 | CA1221603A1 Vent line system |
| 05/05/1987 | US4662785 Apparatus and method for connecting subsea production equipment to a floating facility |
| 05/05/1987 | US4662453 Liner screen tieback packer apparatus and method |
| 05/05/1987 | US4662448 Well treatment method using sodium silicate to seal formation |
| 05/05/1987 | US4662442 Process and device for casing a borehole for the measurement of the interstitial pressure of a porous medium |
| 04/28/1987 | US4661016 Subsea flowline connector |
| 04/28/1987 | US4660863 Casing patch seal |
| 04/28/1987 | US4660644 Inflatable rubber blasting hole plug |
| 04/28/1987 | US4660637 For use in oil and gas wells |
| 04/28/1987 | CA1221027A1 Inflatable packer element |
| 04/23/1987 | WO1987002409A1 Turbulence cementing sub |
| 04/23/1987 | DE3537472A1 Cover |
| 04/21/1987 | US4659925 High pressure well radioisotope injection system |
| 04/21/1987 | US4659530 Pressurized molding, depressurizing, collapse and retrieval of mold and tool |
| 04/21/1987 | US4659115 Reducer coupling and positioner tool for the coupling |
| 04/21/1987 | US4658903 Method for handling wellhead assembly |
| 04/21/1987 | US4658894 Well head pipe stripper |
| 04/21/1987 | US4658860 Pressure set and retrievable vented anchor-seal for pipeline service |
| 04/14/1987 | US4657263 Annular packing unit and insert |
| 04/14/1987 | US4657084 Twin seal well packer |
| 04/14/1987 | US4657075 Well head isolation tool |
| 04/14/1987 | CA1220418A1 Apparatus and method for rotating coil tubing in a well |
| 04/14/1987 | CA1220417A1 Subsea well casing tieback connector |
| 04/14/1987 | CA1220416A1 Multi-drain drilling and petroleum production start- up device |
| 04/09/1987 | WO1987002092A1 Sealing packer |
| 04/07/1987 | US4656219 Rubber member having oil resistance and resistance to deterioration |
| 04/07/1987 | US4655431 Ram-type blowout preventer |
| 04/07/1987 | US4655292 Steam injection packer actuator and method |
| 04/07/1987 | US4655286 Method for cementing casing or liners in an oil well |
| 04/07/1987 | US4655284 Well head shut-off device |
| 04/07/1987 | CA1220176A1 High pressure well radioisotope injection system |
| 04/07/1987 | CA1220134A1 Topping and tamping plug |
| 04/07/1987 | CA1220133A1 Safety device for submerged wellhead |
| 04/07/1987 | CA1220132A1 Well head shut off device |
| 04/01/1987 | EP0216591A2 Temporary permeability reduction of subterranean formations |
| 04/01/1987 | EP0216527A2 Methods and apparatus for well completion operations |
| 04/01/1987 | EP0216417A2 Packer and service tool assembly |
| 04/01/1987 | CN86105839A Casing patch seal |
| 04/01/1987 | CN85101452A Microbiocidal anionic sequestrants with polyvalent metal cations for permeability correction process |
| 03/31/1987 | US4653778 Lockdown connector for mudline wellhead tieback adaptor |
| 03/31/1987 | US4653589 Mudline casing hanger tieback adaptor with adjustable load ring |
| 03/31/1987 | US4653588 Valve apparatus for controlling communication between the interior of a tubular member and an inflatable element in a well bore |
| 03/31/1987 | US4653587 Method and apparatus for the sonic cementing of wells in porous formations |
| 03/26/1987 | WO1987001757A1 Process for strengthening geological formations |
| 03/25/1987 | EP0215522A2 Reducer coupling and positioner tool for the coupling |
| 03/25/1987 | EP0214965A1 Method for suppressing oil well fires |
| 03/24/1987 | US4652174 Method of forming underground ducts, conduits and the like |
| 03/24/1987 | US4652022 Wellhead equipment support |
| 03/24/1987 | US4651836 Process for recovering methane gas from subterranean coalseams |
| 03/24/1987 | US4651831 Subsea tubing hanger with multiple vertical bores and concentric seals |
| 03/24/1987 | US4651830 Marine wellhead structure |
| 03/24/1987 | US4651824 Controlled placement of underground fluids |
| 03/24/1987 | US4651818 Metal seal tubing plug |
| 03/19/1987 | DE3532491A1 Borehole plug with sliding wedge |
| 03/18/1987 | EP0214851A2 Valve assembly for inflatable packer |
| 03/17/1987 | US4650226 For use in a wellhead |
| 03/17/1987 | US4650225 For use in a wellhead |
| 03/17/1987 | US4649999 Method for treating subterranean formations with temporarily thickening solutions |
| 03/17/1987 | US4649995 Well treating apparatus |
| 03/17/1987 | CA1219205A1 Progressively inflated packers |
| 03/12/1987 | WO1987001312A1 In situ hazardous waste treating apparatus and method of using same |
| 03/10/1987 | US4648748 Clamp assembly |
| 03/10/1987 | US4648629 Underwater connector |
| 03/10/1987 | US4648453 Casings in oil wells |
| 03/10/1987 | US4648448 Packer assembly |
| 03/10/1987 | US4648446 Wireline set/tubing retrieve packer type bridge plug |
| 03/10/1987 | CA1218928A1 Sequential inflatable packer |
| 03/10/1987 | CA1218927A2 Ram block carrier for reciprocating ram-type blowout preventer |
| 03/04/1987 | CN85105851A Method and equipment for blocking water currents with filled sacks |
| 03/03/1987 | US4647254 Marine riser structural core connector |
| 03/03/1987 | US4647050 Stuffing box for a sucker rod pump assembly |
| 03/03/1987 | US4647002 Ram blowout preventer apparatus |
| 03/03/1987 | US4646845 Metal seal for wellhead apparatus |
| 03/03/1987 | US4646844 Diverter/bop system and method for a bottom supported offshore drilling rig |
| 03/03/1987 | US4646834 Aqueous treatment fluid and method of use |
| 03/03/1987 | US4646829 Hydraulically set and released bridge plug |
| 03/03/1987 | US4646827 Tubing anchor assembly |
| 03/03/1987 | US4646825 Blowout preventer, shear ram, shear blade and seal therefor |
| 02/26/1987 | WO1987001156A1 Equipment for installation of modules on fixed underwater bases, specially for undersea petroleum wells |
| 02/24/1987 | US4645214 Wellhead sealing assembly |
| 02/24/1987 | CA1218298A1 Subsea casing hanger suspension system |