| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 08/30/1977 | US4044826 Retrievable well packers |
| 08/23/1977 | US4043830 Water glass and gelling agent |
| 08/23/1977 | US4043394 Plugging of abandoned dry wells |
| 08/23/1977 | US4043391 Sleeve detent latch means for well apparatus |
| 08/23/1977 | US4043389 Ram-shear and slip device for well pipe |
| 08/23/1977 | US4043192 Apparatus for providing directional permeability measurements in subterranean earth formations |
| 08/16/1977 | US4042032 Methods of consolidating incompetent subterranean formations using aqueous treating solutions |
| 08/16/1977 | US4042021 Connection between water tubes |
| 08/16/1977 | US4042020 Positive seal pitless well adapter |
| 08/16/1977 | US4042014 Multiple stage cementing of well casing in subsea wells |
| 08/09/1977 | US4040649 Oil well tool with packing means |
| 08/09/1977 | US4040485 Method of simultaneously setting a packer device and actuating a vent assembly |
| 08/02/1977 | US4039208 Device for locking and unlocking two concentric pipes |
| 08/02/1977 | US4039025 Apparatus for anchoring an offshore structure |
| 07/26/1977 | US4037662 Automated bailing apparatus in flexible combination for bailing shallow wells |
| 07/26/1977 | US4037654 Pitless well adapter apparatus |
| 07/26/1977 | US4037424 Offshore drilling structure |
| 07/19/1977 | US4036247 Multi-pressure, single line supply system |
| 07/12/1977 | US4034811 Furfuryl alcohol, acid catalyst |
| 07/05/1977 | US4033414 Method and apparatus for releasing a drill string held by differential pressure |
| 06/28/1977 | US4031957 Method and apparatus for testing and treating well formations |
| 06/28/1977 | US4031955 Down hole inhibitor injector |
| 06/21/1977 | US4030546 Swivel assembly |
| 06/21/1977 | US4030545 Apparatus for cleansing well liner and adjacent formations |
| 06/21/1977 | US4030544 Wellhead seal apparatus and pulling tool for releasing and retrieving such apparatus |
| 06/21/1977 | US4030354 Testing of ram and annular blowout preventers |
| 06/14/1977 | US4029147 Gripping member for well packer |
| 06/07/1977 | US4027732 Tool for washing perforations in cased well bore |
| 05/31/1977 | US4027286 Multiplexed data monitoring system |
| 05/31/1977 | US4026354 Apparatus for shutting off and controlling well blowouts |
| 05/24/1977 | US4024917 Calcium and magnesium hydroxide plugging process |
| 05/24/1977 | US4024916 Borehole sealing method and apparatus |
| 05/24/1977 | US4024913 Well installations employing non-metallic lines, tubing casing and machinery |
| 05/24/1977 | US4024718 Subsea cable apparatus and method of handling same |
| 05/17/1977 | US4023814 Tree saver packer cup |
| 05/10/1977 | US4022281 Method and apparatus for orienting equipment in a well |
| 05/10/1977 | US4022274 Multiple string well packer |
| 05/10/1977 | US4022273 Bottom hole flow control apparatus |
| 04/26/1977 | US4019580 Apparatus and method for running, setting and testing a compression-type well packoff |
| 04/26/1977 | US4019579 Apparatus for running, setting and testing a compression-type well packoff |
| 04/19/1977 | US4018471 Rotating head |
| 04/19/1977 | US4018276 Blowout preventer testing apparatus |
| 04/19/1977 | US4018275 Anchoring device for well tools |
| 04/19/1977 | US4018274 Well packer |
| 04/19/1977 | US4018273 Mandrel locking sleeve |
| 04/19/1977 | US4018272 Well packer apparatus |
| 04/12/1977 | US4017214 Packing gland leak retriever device |
| 04/05/1977 | US4015864 Well apparatus |
| 03/22/1977 | US4013124 Method for obtaining information from a well by use of a gas operated hydraulically actuated wire line packer |
| 03/22/1977 | US4013123 Hydraulically actuated wire line apparatus |
| 03/15/1977 | US4012059 Pipe connector |
| 03/08/1977 | US4010804 Distributed load liner hanger and method of use thereof |
| 03/08/1977 | US4010798 Method and apparatus for completing underwater well heads |
| 03/08/1977 | US4010633 Annular seal |
| 03/01/1977 | US4009581 Grout line protected pressure lines for setting sleeve packers |
| 02/22/1977 | US4008898 Well apparatus |
| 02/22/1977 | US4008759 Oil well tool with packing means |
| 02/15/1977 | US4008096 Oil in water emulsion, subterranean |
| 02/15/1977 | US4007921 Apparatus for mixing dry particles with a liquid |
| 02/15/1977 | US4007905 Retrievable blow-out preventer ram seals |
| 02/15/1977 | US4007904 Annular blowout preventer |
| 02/15/1977 | US4007783 Well plug with anchor means |
| 02/15/1977 | US4007782 Parking device for blowout preventer |
| 01/18/1977 | US4003441 Method of opening carbon-bearing beds with production wells for underground gasification |
| 01/18/1977 | US4003434 Method and apparatus for running, operating, and retrieving subsea well equipment |
| 01/18/1977 | US4003430 Apparatus for the replacement of seals in a well ram type blow out preventer |
| 01/18/1977 | US4003428 Apparatus and method for underwater pump installation |
| 12/28/1976 | US3999610 Pipe snubbing method and apparatus |
| 12/07/1976 | US3995694 Inflatable well seal and method of use thereof |
| 11/30/1976 | US3994517 Pipe anchor for wellhead assemblies |
| 11/30/1976 | US3994472 Annular type blowout preventer |
| 11/23/1976 | US3993100 Hydraulic control system for controlling a plurality of underwater devices |
| 11/16/1976 | US3991826 Retrievable well packer and anchor with latch release |
| 11/16/1976 | US3991824 Offshore well drilling, completion and production |
| 11/09/1976 | US3990510 Releasable well anchor tool |
| 10/26/1976 | US3987854 Gravel packing apparatus and method |
| 10/26/1976 | US3987847 Composite multiple zone test tool |
| 10/26/1976 | US3987846 Wellhead shut-off valve |
| 10/26/1976 | US3987638 Subsea structure and method for installing the structure and recovering the structure from the sea floor |
| 10/19/1976 | US3986729 Connecting apparatus |
| 10/12/1976 | US3984991 Anchor and method of setting anchor |
| 10/12/1976 | US3984988 Obturating device, especially for injection tubes |
| 10/05/1976 | US3983941 Well completion technique for sand control |
| 10/05/1976 | US3983906 Impression packer sleeve |
| 09/28/1976 | US3982590 Well bore cleaning device |
| 09/28/1976 | US3982324 Method of determining actual size of flow openings in a tubular member located in a well |
| 09/21/1976 | US3981835 Method of making a set water-in-oil emulsion including a continuous resin phase |
| 09/21/1976 | US3981626 Down hole pump and method of deep well pumping |
| 09/14/1976 | US3980134 Well packer with frangible closure |
| 08/24/1976 | US3976139 Anchoring for tensioning casing in thermal wells |
| 08/24/1976 | US3976134 Mandrel locking sleeve |
| 08/24/1976 | US3976133 Retrievable well packer |
| 08/24/1976 | US3976132 Tubing spreader mechanism |
| 08/24/1976 | US3976131 Pitless adapter with pressurized seal |
| 08/24/1976 | US3976130 Packing means for a wellhead assembly |
| 08/17/1976 | US3974875 Underwater well completion method and apparatus |
| 08/10/1976 | US3973635 Method and apparatus for offshore drilling operations |
| 08/03/1976 | US3972546 Locking assembly and a seal assembly for a well |
| 07/27/1976 | US3971576 Underwater well completion method and apparatus |
| 07/27/1976 | US3971441 Well completion in permafrost |