Abstract:
A method of increasing the collapse resistance of a tubular comprises locating a tool having at least one, and typically three, bearing members within a tubular. The bearing members are positioned in engagement with a wall of the tubular to apply a radial force to a discrete zone of the wall. This radial force is then applied to further discrete zones of the wall, the level of radial force being selected such that the collapse resistance of the tubular is increased.
Abstract:
A method of lining a drilled bore comprises running an expandable first tubular (18) into a bore and locating part portion of the first tubular in an unlined section of the bore and another portion of the first tubular (14) overlapping a portion of an existing second tubular. The first tubular is secured (24) relative to the second tubular while retaining the provision of fluid outlets to permit displacement of fluid from an annulus between the first tubular and the bore wall. An expansion device (23) is then run through the first tubular to expand the first tubular to a larger diameter. Cement is then circulated into the annulus between the expanded first tubular and the bore wall. The fluid outlets are then closed.
Abstract:
The present invention relates to a managed pressure and/or temperature drilling system and method. In one embodiment, a method for drilling a wellbore into a gas hydrates formation is disclosed. The method includes drilling the wellbore into the gas hydrates formation; returning gas hydrates cuttings to a surface of the wellbore and/or a drilling rig while controlling a temperature and/or a pressure of the cuttings to prevent or control disassociation of the hydrates cuttings.
Abstract:
A detector 60 and method of use thereof, for use in cementing a tubular string in a wellbore comprising a tubular mandrel 62, an electronics package 64 fastened to an outer surface of the mandrel, a first transducer 67t fastened to the mandrel outer surface and in communication with the electronics package, operable to generate ultrasonic pulses, a second transducer 67r fastened to the mandrel outer surface, in communication with the electronics package, and operable to receive the ultrasonic pulses, and an antenna 66 fastened to the mandrel outer surface and in communication with the electronics package. The detector may furthermore be located in a cementing head 7 (fig 3A), which may include a launcher operable to hold a plug 59 (fig 3A) retained therein, wherein the ultrasonic transducer detectors monitor launching of the plug from the cementing head by fluid flow.
Abstract:
A method and apparatus for a wellbore assembly. The wellbore assembly may comprise a conveyance member including at least one of a continuous spooled rod, a wireline, and a slickline; an accumulator system connected to the conveyance member; and a setting tool connected to the accumulator system. The accumulator system may be configured to supply a fluid pressure to actuate the setting tool. A method of operating a wellbore tool may comprise lowering a wellbore assembly into a wellbore using a conveyance member including at least one of a continuous spooled rod, a wireline, and a slickline, wherein the wellbore assembly includes an accumulator system and a setting tool. The method may comprise actuating the accumulator system to provide a fluid pressure to the setting tool. The method may comprise actuating the setting tool using the fluid pressure.
Abstract:
Det beskrives fremgangsmåter og apparater for ekspandering av rør nede i borehull. I én utførelse beskrives en fremgangsmåte for ekspandering av nedihullsrør, slik som et forlengningsrør (10), hvilken fremgangsmåte omfatter trinnene å plassere forlengningsrøret (10) i et borehull (12), å ekspandere et parti (16) av forlengningsrøret (10) i borehullet (12), å plassere en ekspansjonsanordning, slik som en ekspanderbar konus (18), i nevnte ekspanderte parti (16) av forlengningsrøret (10) og å forskyve konusen (18) i forhold til forlengningsrøret (10) for å ekspandere et ytterligere parti (20) av forlengningsrøret (10).
Abstract:
En fremgangsmåte for foring av en boret borehull omfatter innkjøring av et rør (40) i en boret boring (42) og deretter korrugering av røret i boringen. Røret kan også ekspanderes i boringen. Ifølge andre aspekter ved oppfinnelsen blir røret korrugert før innkjøring i borehullet og kan roteres når det kjøres inn i boringen.
Abstract:
A system compensates for heave induced pressure fluctuations on a floating rig when a drill string or tubular is lifted off bottom and suspended on the rig, such as when tubular connections are made during MPD, tripping, or when a kick is circulated out during conventional drilling. In one embodiment, a liquid and a gas interface moves along a flow line between a riser and a gas accumulator as the tubular moves up and down. In another embodiment, a pressure relief valve or adjustable choke allows the movement of fluid from the riser when the tubular moves down, and a pump with a pressure regulator moves fluid to the riser when the tubular moves up. In other embodiments, a piston connected with the rig or the riser telescoping joint moves in a fluid container thereby communicating a required amount of the fluid either into or out of the riser annulus. The system also compensates for heave induced pressure fluctuations on a floating rig when a riser telescoping joint located below a RCD is moving while drilling.