Schlumberger Technology Corporation

Denis Li

Geoffrey Charles Downton

Scott Richard Woolston

Kjell Haugvaldstad

Riadh Boualleg

Ling Li

Stuart Alan Kolbe

Jeremy Cochain

Robert Sedgeman

Prashant Saxena

Kien Hoe Tang

Ebenezer Sola Oluwadare

Sarah Slavens

Andreas Michaelides

A flexible downhole component includes an upper connection for connecting the flexible downhole component to a first downhole tool and a lower connection for connecting the flexible downhole component to a second downhole tool. The flexible downhole component includes a flexible body disposed between the upper connection and the lower connection. The flexible downhole component includes an upper damping component and a lower damping component each configured to damp torsional oscillations.

Torsional damping and flexible components in downhole systems and methods

A method for evaluating a subterranean wellbore includes rotating a drill string in the subterranean wellbore. The drill string includes a rotary steerable tool, a steerable drill bit, or other rotary steering tool with at least one pad configured to extend radially outward from a tool body and engage a wall of the wellbore. Radial displacements of the pad are measured while rotating and processed to compute a curvature of the wellbore.

Estimating wellbore curvature using pad displacement measurements

A directional drilling assembly includes a downhole piston and an uphole piston. A downhole piston diameter of the downhole piston is smaller than an uphole piston diameter of the uphole piston diameter. This may allow the downhole piston and/or the uphole piston to be located closer to the bit, thereby improving the maximum DLS of the system.

Directional drilling systems

A method for drilling a subterranean wellbore includes rotating a drill string in the subterranean wellbore to drill the wellbore. The drill string includes a rotary steerable tool or a steerable drill bit including at least first and second axially spaced pads configured to extend radially outward from a tool body and engage a wall of the wellbore. Radial displacements of each of the first and second axially spaced pads are measured while drilling. The measured radial displacements are processed to compute a rate of penetration of drilling.

Estimating rate of penetration using pad displacement measurements

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Houston, TX, United States of America

Denis Li