Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Riser tube for use in great sea depth and method for drilling at such depths










Image Number 3 for United States Patent #6454022.

A drilling riser for use at great sea depths for drilling of wells in the seabed using a drill string, with the drilling riser arranged to be connected between a wellhead at the seabed and a vessel, and arranged for use with a drilling fluid with sufficiently high density to balance the fluid pressure from the geological formations, with a sensor arranged to detect the level of the drilling fluid's level in the drilling riser, and a return riser pipe with an adjustable return riser pump. The return riser pipe extends up to the vessel, from an outlet on the riser, from a depth which is substantially below the sea surface, and at the same time at a height substantially above the seabed. The riser mud return pump is arranged by the outlet and arranged to adjust the drilling fluid level to a predetermined level by or above the outlet and substantially deeper than the sea surface, and that the drilling fluid has considerably higher density than what would be sufficient to balance the same fluid pressure from the geological formations by using a drilling fluid column entirely up to the surface, or to the vessel.








 
 
  Recently Added Patents
Badge or pin
Gemstone
Remote ignition system for a vehicle and method for securing a remote ignition function
Bull stationery tab
Self-assembled, micropatterned, and radio frequency (RF) shielded biocontainers and their uses for remote spatially controlled chemical delivery
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
Nanowire structured photodiode with a surrounding epitaxially grown P or N layer
  Randomly Featured Patents
Compositions for improving fertility
Self-cleaning mechanism for error recovery
Gaming system incorporating non deterministic jackpot
In-line wire drawing machine with overhead turntable
Hydraulic motor with a separate spool valve
Layered product
Shake correction apparatus and control method thereof
Variable ratio bypass gas turbine engine with flow diverter
Toiletry organizer
Bump printing apparatus