Halliburton Energy Services, Inc.

Thomas Platt Wilson

James B Terry

James W Estep

Albert C Odell, Ii

Jay Milton Eppink

William F Trainor

Haoshi Song

Tommie Austin Freeman

Albert C Odell

E Alan Coats

A steering assembly includes upper and lower tubular housings connected by a universal joint. An angle cam is disposed on the end of the lower housing and projects into the upper housing. A plurality of wedge members extend axially from the upper housing and into engagement with the angle cam. Drive trains are connected to the wedge members to move the wedge members toward and away from the angle cam so as to pivot the lower housing at the universal joint and change the angle and azimuth of the lower housing with respect to the upper housing. The lower housing is connected to a bearing pack supporting a drill bit such that upon changing the angle and azimuth of the lower housing, the direction of the drilling of the drill bit is also changed. The steering assembly being connected to composite tubing having conductors in the wall thereof for conducting data and commands between the steering assembly and a processor at the surface and for providing power to the steering assembly. Data on the position of the bit is transmitted to a processor which determines the direction of drilling and selectively transmits commands to the steering assembly to change the bend angle and direction of the drilling of the bit.

Three dimensional steering system and method for steering bit to drill borehole

The drilling system includes a work string supporting a bottom hole assembly. The work string including lengths of pipe having a non-metallic portion. The work string preferably includes a composite coiled tubing having a fluid impermeable liner, multiple load carrying layers, and a wear layer. Multiple electrical conductors and data transmission conductors may be embedded in the load carrying layers for carrying current or transmitting data between the bottom hole assembly and the surface. The bottom hole assembly includes a bit, a gamma ray and inclinometer instrument package, a steerable assembly, an electronics section, a transmission, and a power section for rotating the bit. It may or may not include a propulsion system. The drilling system may be a gravity based drilling system that does include a propulsion system. Various motive means may be provided, such as gravity, to apply weight on the bit.

Well system

The drilling system includes a work string supporting a bottom hole assembly. The work string including lengths of pipe having a non-metallic portion. The work string preferably includes a composite coiled tubing having a fluid impermeable liner, multiple load carrying layers, and a wear layer. Multiple electrical conductors and data transmission conductors may be embedded in the load carrying layers for carrying current or transmitting data between the bottom hole assembly and the surface. The bottom hole assembly includes a bit, a gamma ray and inclinometer instrument package, a steerable assembly, an electronics section, a transmission, and a power section for rotating the bit. It may or may not include a propulsion system. The drilling system may be a gravity based drilling system that does include a propulsion system. Various motive means may be provided such as gravity, to apply weight on the bit.

A drilling system includes a work string supporting a bottom hole assembly. The work string including lengths of pipe having a non-metallic portion. The work string preferably includes a composite umbilical having a fluid impermeable liner, multiple load carrying layers, and a wear layer. Multiple electrical conductors and data transmission conductors are embedded in the load carrying layers for carrying current or transmitting data between the bottom hole assembly and the surface. The bottom hole assembly includes a bit, a gamma ray and inclinometer instrument package, a propulsion system with resistivity antenna and steerable assembly, an electronics section, a transmission, and a power section for rotating the bit. The electrical conductors in the composite umbilical provide power to the electronics section and may provide power to the power section. The data transmission conduits in the composite umbilical transmit the data from the downhole sensors to the surface where the data is processed. The propulsion system includes two or more traction modules connected by rams disposed in cylinders for walking the bottom hole assembly up and down the borehole. The propulsion system includes a steerable assembly, controlled from the surface, for changing the trajectory of the borehole.

Three dimensional steerable system and method for steering bit to drill borehole

A coiled tubing connector includes a male and female housing. A rotating ring having threads is disposed on the male housing. When the male housing is joined to the female housing, the threads of the rotating ring threadingly engage threads disposed on the internal circumference of the female housing. The male housing also includes splines which align with grooves on the female housing. Situated on both the male and female housing are electrical contacts which themselves engage when the housings are joined. The electrical contacts are connected to wires embedded in the composite tubing so that electrical power or data signals from one length of composite tubing can pass through the connector to another length of coiled tubing. The ends of the composite tubing are affixed to both the male and female housings through a compression fitting.

Coiled tubing connector

Three dimensional steerable system

A winding tool operating in conjunction with a level wind spools coiled tubing in a helical pattern onto a reel. In one embodiment, the winding tool includes a plurality of rollers that are urged against the winds of coiled tubing with a biasing member. A driver provides controlled oscillatory translational movement for the rollers.

Coil tubing winding tool

Apparatus and methods for completing a wellbore are disclosed. Certain ones of the apparatus and methods use a first packing assembly, a second packing assembly, and a pressurization assembly disposed between the first and second packing assemblies to plastically deform a liner in a radially outward direction via hydraulic pressure. Another method uses a liner having a first section and a second section, and a packing assembly. The first section is deformable in a radially outward direction at a lower pressure than the second section. The packing assembly is used to plastically deform the first section of the liner in a radially outward direction via hydraulic pressure.

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Houston, TX, United States of America

Thomas Platt Wilson