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Class Information
Number: 175/7
Name: Boring or penetrating the earth > Boring a submerged formation > Boring from floating support with submerged independent anchored guide base
Description: Subject matter, utilizing a base structure positioned on the underwater floor and completely covered by water when so positioned and a floating structure independent of the base structure, said floating structure and base structure cooperating to support and guide the drilling apparatus during the drilling operation.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
4109478 Unitized conductor guide and frame for offshore drilling and production Aug. 29, 1978
4105068 Apparatus for producing oil and gas offshore Aug. 8, 1978
4100754 Method and apparatus for installing pipes in off-shore locations Jul. 18, 1978
4099583 Gas lift system for marine drilling riser Jul. 11, 1978
4099582 Drilling fluid compensation device Jul. 11, 1978
4098333 Marine production riser system Jul. 4, 1978
4095649 Reentry system for subsea well apparatus Jun. 20, 1978
4091881 Artificial lift system for marine drilling riser May. 30, 1978
4086971 Riser pipe inserts May. 2, 1978
4086776 Lock means for a tension line May. 2, 1978
4085509 Apparatus for compensating for the heaving of a floating drilling platform for connection with apparatus for measuring the rate of penetration of pipe run into an offshore well Apr. 25, 1978
4081039 Connecting assembly and method Mar. 28, 1978
4078605 Riser pipe string Mar. 14, 1978
4075964 Ice melting system Feb. 28, 1978
4068487 Method and apparatus for conducting subaqueous operations in ice conditions Jan. 17, 1978
4063602 Drilling fluid diverter system Dec. 20, 1977
4060140 Method and apparatus for preventing debris build-up in underwater oil wells Nov. 29, 1977
4059148 Pressure-compensated dual marine riser Nov. 22, 1977
4053022 Device for guiding a drilling string during underwater drilling Oct. 11, 1977
4053023 Underwater well completion method and apparatus Oct. 11, 1977
4047579 Sea drilling jig Sep. 13, 1977
4044473 Tilt detector and system Aug. 30, 1977
4040264 Controlled buoyancy underwater riser system Aug. 9, 1977
4024718 Subsea cable apparatus and method of handling same May. 24, 1977
3999617 Self-supported drilling riser Dec. 28, 1976
3996754 Mobile marine drilling unit Dec. 14, 1976
3996755 Tension leg structure with riser stabilization Dec. 14, 1976
3992889 Flotation means for subsea well riser Nov. 23, 1976
3984991 Anchor and method of setting anchor Oct. 12, 1976
3984990 Support means for a well riser or the like Oct. 12, 1976
3983828 Vertically moored platform installation Oct. 5, 1976
3983706 Marine structure with hydraulic tensioner Oct. 5, 1976
3982401 Marine structure with detachable anchor Sep. 28, 1976
3981357 Marine riser Sep. 21, 1976
3976148 Method and apparatus for determining onboard a heaving vessel the flow rate of drilling fluid flowing out of a wellhole and into a telescoping marine riser connecting between the wellhouse and Aug. 24, 1976
3974875 Underwater well completion method and apparatus Aug. 17, 1976
3973635 Method and apparatus for offshore drilling operations Aug. 10, 1976
3971576 Underwater well completion method and apparatus Jul. 27, 1976
3968656 Marine structure with hydraulic tensioner Jul. 13, 1976
3955411 Method for measuring the vertical height and/or density of drilling fluid columns May. 11, 1976
3955621 Riser assembly May. 11, 1976
3954137 Sub-sea well re-entry guidance apparatus May. 4, 1976
3934658 Modular underwater well platform system Jan. 27, 1976
3933108 Buoyant riser system Jan. 20, 1976

1 2 3 4 5










 
 
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