| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 09/29/1987 | CA1227511A1 Tubular joint |
| 09/29/1987 | CA1227422A1 Connection between a submarine well head and a surface support |
| 09/23/1987 | EP0237662A1 Downhole tool |
| 09/22/1987 | US4695840 Remote switch position determination using duty cycle modulation |
| 09/22/1987 | US4695190 Pressure-balanced stab connection |
| 09/22/1987 | US4694910 Packing tube assembly for pumping wells |
| 09/22/1987 | US4694900 Dry pellet dispensing device for wells |
| 09/22/1987 | US4694859 Undersea hydraulic coupling and metal seal |
| 09/15/1987 | US4693534 Electric fed-thru connector assembly |
| 09/15/1987 | US4693497 Collet connector |
| 09/15/1987 | US4693309 Wireline set/tubing retrievable bridge plug |
| 09/09/1987 | EP0235365A2 Subsea electrical connector and method |
| 09/08/1987 | US4691781 Well drilling and completion apparatus |
| 09/08/1987 | US4691780 Subsea wellhead structure |
| 09/08/1987 | US4691770 Well casing packer |
| 09/08/1987 | CA1226518A1 Inflatable packer |
| 09/08/1987 | CA1226517A1 Apparatus and method for inserting coiled tubing |
| 09/01/1987 | US4690411 Bonded mechanically inner connected seal arrangement for a blowout preventer |
| 09/01/1987 | US4690221 Well tubing hanger method and apparatus for use in well control |
| 09/01/1987 | US4690220 Tubular member anchoring arrangement and method |
| 09/01/1987 | US4690213 For stripping fluid from the external surface of tubulat articles |
| 09/01/1987 | CA1226208A1 Jacquard fluid controller for a fluid sampler and tester |
| 09/01/1987 | CA1226144A1 Foundation level and construction of a subsea production platform and a method of using said tool |
| 08/26/1987 | EP0233223A1 Equipment for installation of modules on fixed underwater bases, specially for undersea petroleum wells |
| 08/25/1987 | US4688642 Rotatable liner with multiple simultaneously set liner hanger arrangement and method |
| 08/25/1987 | US4688641 Well packer with releasable head and method of releasing |
| 08/25/1987 | US4688640 Abandoning offshore well |
| 08/25/1987 | US4688634 Running and setting tool for well packers |
| 08/25/1987 | US4688633 Wellhead connecting apparatus |
| 08/25/1987 | US4688632 Quick connect wellhead adapter |
| 08/20/1987 | DE3701189A1 Method and device for fitting seismic sensors in an oil production well |
| 08/19/1987 | EP0233068A2 Setting device for zone gravel packing system |
| 08/19/1987 | EP0232576A1 Well tool for testing or treating a well |
| 08/19/1987 | EP0232285A1 A valve actuator system for controlling of valves. |
| 08/19/1987 | EP0107707B1 High-pressure fire-resistant metal seal |
| 08/18/1987 | US4687063 Well cementing method and apparatus |
| 08/18/1987 | US4687060 Production and grout liner for methane drainage in subterranean boreholes and method |
| 08/18/1987 | US4687056 In a well casing |
| 08/18/1987 | US4687014 Method and apparatus for reducing the response time of remotely controlled, hydraulic control systems |
| 08/12/1987 | EP0232183A2 Retrievable gravel packer |
| 08/11/1987 | US4685833 Offshore structure for deepsea production |
| 08/11/1987 | US4685523 Removable side pocket mandrel |
| 08/11/1987 | US4685521 Well apparatus |
| 08/04/1987 | CA1225021A1 Wireline apparatus |
| 08/04/1987 | CA1224937A1 Well plug quality testing |
| 07/29/1987 | CN87100310A Process and device for installing seismic sensors inside petroleum production well |
| 07/28/1987 | US4682913 Hydraulic stab connector |
| 07/28/1987 | US4682657 Method and apparatus for the running and pulling of wire-line tools and the like in an oil or gas well |
| 07/28/1987 | US4682656 Completion apparatus and method for gas lift production |
| 07/28/1987 | CA1224715A1 Apparatus and method for connecting subsea production equipment to a floating facility |
| 07/22/1987 | EP0229434A1 Process for the improvement of the conditioning of gasification agents utilized in an underground coal-gasification process |
| 07/22/1987 | EP0229425A2 Forming a coating on a borehole wall |
| 07/22/1987 | EP0139724B1 Annular packing unit and insert |
| 07/21/1987 | US4681168 Method and apparatus for running long tools into and out of a pressurized enclosure |
| 07/21/1987 | US4681166 For securing a conduit into a subsea wellhead |
| 07/21/1987 | US4681162 Borehole drill pipe continuous side entry or exit apparatus and method |
| 07/21/1987 | CA1224413A1 Method and apparatus for sealing a well casing |
| 07/21/1987 | CA1224412A1 Reinforcing element and demand sensitive pressure intensifier for sealing a well casing |
| 07/21/1987 | CA1224411A2 Ram assembly seal for reciprocating ram-type blowout preventer |
| 07/21/1987 | CA1224410A1 Subsea wellhead connector |
| 07/14/1987 | US4679964 Offshore well support miniplatform |
| 07/14/1987 | US4679824 Fluid-tight coupling for two sections of a fluid line |
| 07/14/1987 | US4679624 Hydraulic setting tool |
| 07/08/1987 | EP0228196A2 Composition and method for temporarily reducing the permeability of subterranean formations |
| 07/07/1987 | US4678209 Casing hanger |
| 07/07/1987 | US4678031 Rotatable reciprocating collar for borehole casing |
| 07/07/1987 | CA1223810A2 Topping and tamping plug |
| 07/07/1987 | CA1223809A1 Subsea wellhead protector |
| 06/30/1987 | US4676310 Apparatus for transporting measuring and/or logging equipment in a borehole |
| 06/30/1987 | CA1223525A1 Casing structures having core members under radial compressive force |
| 06/30/1987 | CA1223524A1 Closure device |
| 06/23/1987 | US4674576 Casing hanger running tool |
| 06/23/1987 | US4674573 Method and apparatus for placing cement plugs in wells |
| 06/23/1987 | US4674572 Corrosion and erosion-resistant wellhousing |
| 06/23/1987 | US4674570 Sleeve expanded by chemicals reacting to form a closed-cell f oam |
| 06/23/1987 | US4674569 Stage cementing tool |
| 06/23/1987 | US4674328 Method and apparatus for determining subsurface conditions using a tubing packoff tool |
| 06/23/1987 | CA1223293A1 Safety joint |
| 06/16/1987 | USRE32438 Well packer valve arrangement |
| 06/16/1987 | US4673890 Well bore measurement tool |
| 06/16/1987 | US4673313 Marine production riser and method for installing same |
| 06/16/1987 | US4673041 Connector for well servicing system |
| 06/16/1987 | US4673034 Cased water wells having flexible pad |
| 06/16/1987 | CA1222944A1 Blowout preventer, shear ram, shear blade and seal therefor |
| 06/10/1987 | EP0225145A2 Plug for use in wellbore operations |
| 06/10/1987 | EP0224942A1 Stage cementing apparatus |
| 06/10/1987 | CN86105338A Underground blowout preventer |
| 06/09/1987 | US4671361 Method and apparatus for hydraulically releasing from a gravel screen |
| 06/09/1987 | US4671358 Wiper plug cementing system and method of use thereof |
| 06/09/1987 | US4671357 Method of cementing a casing in a borehole |
| 06/09/1987 | US4671356 Through tubing bridge plug and method of installation |
| 06/09/1987 | US4671355 Wash tool for stimulating oil wells |
| 06/09/1987 | US4671354 Well packer |
| 06/09/1987 | US4671353 Apparatus for releasing a cementing plug |
| 06/09/1987 | US4671352 Apparatus for selectively injecting treating fluids into earth formations |
| 06/04/1987 | DE3541826A1 Annulus valve, in particular for natural-gas and oil wells |
| 06/02/1987 | US4669541 Stage cementing apparatus |
| 06/02/1987 | US4669540 Topping and tamping plug |
| 06/02/1987 | US4669539 Lock for downhole apparatus |
| 06/02/1987 | US4669538 Double-grip thermal expansion screen hanger and running tool |