Schlumberger Technology Corporation

Dustin Cavin

Julien Toniolo

Ralph Michael D'Angelo

Kenneth William Winkler

Carl Robbins

Firas Al Shaikh Hasan

A method of obtain formation evaluation data that includes deploying an evaluation tool string into a drill string located in a wellbore. The method can also include landing the evaluation tool string in a portion of the drill string that is configured to optimize formation evaluation using the evaluation tool located therein.

Conveyance apparatus, systems, and methods

An acoustic array includes an acoustic transmitter and acoustic receivers radially or longitudinally offset from the acoustic transmitter. The acoustic array is disposed in a wellbore penetrating a subsurface formation. An acoustic signal is broadcast using the transmitter and a portion of the emitted signal is reflected by a reflector and received by the receivers. The presence or absence of fractures in the subsurface formation is inferred based on the received acoustic signal. Inferences are based on travel times and/or coherency of the received signals. Images can be made and fracture orientations determined. Frequencies in the sonic or ultrasonic range may be used. Measurements may be made while-drilling or while performing post-drilling operations. Processing may be done in real-time or post-processing may be performed on recorded data.

Growing community of inventors

Katy, TX, United States of America

Dustin Cavin