Halliburton Energy Services, Inc.

Other

Patrick Emmett Laursen

John C Gano

Michael L Connell

Henry Louis Restarick

Nicida L Maerefat

Rickey Lynn Morgan

James B Terry

James W Estep

Martin Dale Paulk

John Christian Hartley Mungall

E Alan Coats

Carey John Naquin

Ron James Crook

An offshore riserless drilling system drills a subsea borehole from a platform and through a cased borehole. The system comprises a lightweight drill string suspending a bottomhole assembly and extending from the platform downwardly through a depth of water into the cased borehole; a first limiter limiting the range of motion of the drill string adjacent the platform; and a second limiter limiting the range of motion of the drill string adjacent the cased borehole. The preferred methods include lowering a bottomhole assembly suspended on a lightweight drill string from a platform through a depth of water; limiting the bend radius of the drill string adjacent the platform; guiding the bottomhole assembly into a cased borehole; limiting the bend radius of the drill string adjacent the cased borehole; maintaining the bottomhole assembly in the cased borehole, and drilling the subsea borehole.

Method and apparatus for riserless drilling

An apparatus and method for removing cuttings in a deviated borehole using drilling fluids. The apparatus includes a pipe string and a bottom hole assembly having a down hole motor and bit for drilling the borehole. The pipe string has one end attached to the bottom hole assembly and does not rotate during drilling. The apparatus and methods raise at least a portion of the pipe string in the deviated borehole to remove cuttings from underneath the pipe string portion.

Method and apparatus for removing cuttings

A well tool assembly interconnection method is provided. In a described embodiment, a continuous tubing string has connectors positioned corresponding to desired locations for tool assemblies in a well. The tubing string is wrapped on a reel and transported to a well. As the tubing string is deployed from the reel into the well, the tool assemblies are interconnected between the connectors.

Apparatus for interconnecting continuous tubing strings having sidewall-embedded lines therein

Methods and apparatus for interconnecting well tool assemblies in continuous tubing strings

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Sugar Land, TX, United States of America

Patrick Emmett Laursen