Halliburton Energy Services, Inc.

Doug N Derr

Andrew John Cuthbert

Joe Eli Hess

Sean A Roach

An electromagnetic ranging source includes: a tubular body having a circumference; a ferromagnetic core conforming to the tubular body and extending at least halfway around the circumference to define a gap with circumferentially-spaced poles; one or more current-carrying windings around the core to induce a magnetic field between the poles; and a downhole power source that drives the one or more current-carrying windings. A related method includes: equipping a first drill string with such an electromagnetic ranging source; extending a first borehole with the first drill string; assembling a second drill string with sensors; and drilling a second borehole while using said sensors to guide the second drill string relative to the first borehole.

Electromagnetic ranging source suitable for use in a drill string

A capping stack having a first capping stack component and a second capping stack component, and a method for transporting the same are disclosed. The capping stack components are mounted onto standard skids and loaded onto an aircraft. Upon arrival at a location, the skids are mated, and the capping stack components are aligned and coupled. A clamp assembly may be used to create pressure integrity between two capping stack components.

Growing community of inventors

The Woodlands, TX, United States of America

Doug N Derr