Equipment for drilling a well set for submarine; drilling; method paracontrolar pressure of a drilling fluid; the method for recovering drilling fluid; head of perfurau00e7u00e3The rotating and method paravedar one annular

摘要

Invention patent: "equipment for drilling full submarine; assembly for drilling.Well; the method to control the pressure of umfluido drilling; drilling method for recuperarfluido; head of perfurau00e7u00e3orotativo and method for sealing a void ".Su00e3oprovidos an equipment and a method for controlling the pressu00e3ohidrostu00e1tica of drilling fluid in a well sub.Umabomba main force to the drilling fluid down the pipe deperfurau00e7u00e3o, out at the end of the drill pipe and paracima in a ring around the tube.A deperfurau00e7u00e3o rotary head is connected to a head assembly pou00e7ono bottom of the sea.The rotary head has a corpointerno alternately ported in a outer body seated mums orifice housing, or housing.A claw which can serenergizada into a body orifice internal grab a superfu00edcieexterna of drill pipe.The rotary head diverts ofluido drilling to the interior of a lateral passage naparede side of the housing.An auxiliary pump forces water to break through a venturi to the inside of a conduit.Criandouma low pressure to pull the drilling fluid to the interiordo conduit to be taken back to the vessel on the surface.Measurements of pressure and flow are sent to a system decontrole that modulates the speed of each pump to control apressu00e3o hydrostatic.