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