Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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10/08/1985 | US4545702 Boring-injection device, method for improving ground by means of the device and method for investigating ground state by means of the device |
10/08/1985 | US4545433 Reinforcing element and demand sensitive pressure intensifier for sealing a well casing |
10/08/1985 | US4545431 Wireline set/tubing retrieve packer type bridge plug |
10/08/1985 | CA1194788A1 Well tool |
10/08/1985 | CA1194787A1 Annular blowout preventer |
10/08/1985 | CA1194780A1 Accelerated downhole pressure testing |
10/01/1985 | US4544165 Inflatable packer |
10/01/1985 | CA1194411A1 Combined metal and elastomer seal |
10/01/1985 | CA1194410A1 Subsea caissons |
10/01/1985 | CA1194407A1 Flow diverter |
09/25/1985 | EP0155413A2 High temperature well packer |
09/25/1985 | EP0155412A2 High temperature well packer |
09/24/1985 | US4542787 Well fluid collector |
09/17/1985 | US4541639 Ram-type blowout preventer with improved ram front packer |
09/17/1985 | US4541606 Ram-type blowout preventer |
09/17/1985 | US4541490 Adapter for a wellhead |
09/17/1985 | US4541484 Combination gravel packing device and method |
09/17/1985 | CA1193543A1 Annular blowout preventer |
09/17/1985 | CA1193542A1 Packer flowmeter with bypass |
09/17/1985 | CA1193473A1 Well testing apparatus and method |
09/11/1985 | EP0154365A1 Cement mixing process and apparatus |
09/10/1985 | US4540053 For completing an underwater well having a weak formation |
09/10/1985 | US4540047 Flow controlling apparatus |
09/10/1985 | US4540046 Shear ram apparatus |
09/03/1985 | USRE31978 Well tool having knitted wire mesh seal means and method of use thereof |
09/03/1985 | US4538685 Locking annulus safety valve |
09/03/1985 | US4538683 Multiple point groundwater sampler |
08/27/1985 | US4537543 Security locking bolt |
08/27/1985 | US4537257 Method for isolating a well casing |
08/27/1985 | US4537251 Arrangement to prevent premature expansion of expandable seal means |
08/27/1985 | US4537250 Shearing type blowout preventer |
08/27/1985 | CA1192488A1 Tie-back connection apparatus and method |
08/21/1985 | EP0152263A2 Wellhead structure and method of producing same |
08/21/1985 | EP0151677A2 Tension hanger embodying fire resistant sealing means |
08/20/1985 | US4535843 Method and apparatus for obtaining selected samples of formation fluids |
08/20/1985 | CA1192131A1 Casing hanger collet |
08/13/1985 | US4534583 Mudline casing hanger assembly |
08/13/1985 | US4534426 Packer weighted and pressure differential method and apparatus for Big Hole drilling |
08/13/1985 | US4534413 Method and apparatus for water flow stimulation in a well |
08/13/1985 | CA1191783A1 Tieback connection method and apparatus |
08/13/1985 | CA1191782A1 Variable bore ram |
08/13/1985 | CA1191781A1 Flow diverter |
08/13/1985 | CA1191780A1 Flow diverter |
08/06/1985 | US4532989 Valved plug for packer |
08/06/1985 | US4532987 Geothermal expansion spool piston |
08/06/1985 | US4532986 Bitumen production and substrate stimulation with flow diverter means |
07/30/1985 | US4531749 Circular seal with integral backup rings |
07/30/1985 | US4531664 Method of manufacturing a pitless adapter |
07/30/1985 | US4531591 Drilling head method and apparatus |
07/30/1985 | US4531585 Safety shear apparatus and method for production wells |
07/30/1985 | US4531583 Cement placement methods |
07/30/1985 | US4531581 Piston actuated high temperature well packer |
07/30/1985 | US4531580 Rotating blowout preventers |
07/30/1985 | CA1191173A1 Frangible pipe coupling |
07/23/1985 | US4530402 Low density spacer fluid |
07/23/1985 | US4530398 For setting in a casing |
07/23/1985 | US4530397 Oil saving apparatus for use with well pump polish rod |
07/23/1985 | US4530238 High pressure seal assembly |
07/18/1985 | WO1985003105A1 Multiple piezometer and application of such a piezometer |
07/16/1985 | US4529210 Drilling media injection for rotating blowout preventors |
07/16/1985 | US4528738 Method of suspending an upright inner pipe from an outer pipe |
07/09/1985 | US4528041 Method for pigging hydrocarbon product flowlines |
07/09/1985 | US4527625 Packer valve arrangement |
07/09/1985 | CA1190146A1 Device for appplying plugging mix to well walls |
07/09/1985 | CA1190141A1 Well blowout preventer, and packing element |
07/09/1985 | CA1190140A1 Sealing system for a well bore in which a hot fluid is circulated |
07/09/1985 | CA1190138A1 Ball dropping assembly |
07/02/1985 | USRE31933 High temperature well packer |
07/02/1985 | US4526406 Wellhead connector |
07/02/1985 | US4526339 Blowout preventer |
07/02/1985 | US4526243 Drilling head |
07/02/1985 | US4526232 Method of replacing a corroded well conductor in an offshore platform |
07/02/1985 | US4526229 For a well casing |
07/01/1985 | EP0078261A4 Hydraulic control of subsea well equipment. |
07/01/1985 | EP0060840A4 Method and apparatus for running and cementing pipe. |
06/26/1985 | EP0146324A2 Method and apparatus for measuring in situ earthen stresses and properties using a borehole probe |
06/26/1985 | EP0146171A1 Process and composition for cementing wells passing through salt formations |
06/25/1985 | US4524998 Tubular connecting device |
06/25/1985 | US4524981 Annular seal with V-cut |
06/25/1985 | US4524832 Diverter/BOP system and method for a bottom supported offshore drilling rig |
06/25/1985 | US4524825 Well packer |
06/25/1985 | CA1189447A1 Wiper device for stripping fluid from well pipe |
06/25/1985 | CA1189446A1 Lockdown mechanism for wellhead connector |
06/25/1985 | CA1189445A1 Wellhead connector |
06/19/1985 | EP0145456A2 Shearing type blowout preventer |
06/18/1985 | US4523639 Ram type blowout preventers |
06/18/1985 | CA1188982A1 Submerged tool rework connector |
06/11/1985 | US4522368 For a well head |
06/11/1985 | US4522264 Apparatus and method for treating wells |
06/11/1985 | US4522258 Unitized well testing apparatus for use in hostile environments |
06/11/1985 | CA1188610A1 Vertical fracture growth control |
06/05/1985 | EP0143572A2 Well packer device |
06/04/1985 | US4521040 Combined metal and elastomer seal |
06/04/1985 | US4520837 Cover retainer |
06/04/1985 | CA1188217A1 Retrievable well packer |
05/28/1985 | US4519727 Offshore well head protector and method of installation |
05/28/1985 | US4519636 Seal for an underwater connector |
05/28/1985 | US4519633 Subsea well casing tieback connector |
05/28/1985 | US4519577 Flow controlling apparatus |
05/28/1985 | US4519571 Blowout preventer |