Schlumberger Technology Corporation

Malcolm Philip Atkinson

Douglas W Grant

Laurent Alteirac

James G Filas

Sebastien Ives

Marius Smarandache

Adeel Khan

Susanna Fragoso

John Stevens

A sampling tool includes a tubular member and a sampling piston positioned within the tubular member. The sampling piston has a bore formed axially-therethrough. A secondary piston is positioned within the bore of the sampling piston. A check valve assembly is positioned at least partially within the tubular member. The secondary piston and the check valve assembly move together with respect to the tubular member.

Downhole sampling tool with check valve piston

A method for capturing a sample from a wellbore, comprising the steps of introducing a first message and a second message into a tubing positioned within the wellbore. The first message is directed to a first modem connected to a first sampler device to cause the first sampler device to collect a first sample. The second message is directed to a second modem connected to a second sampler device to cause the second sampler device to collect a second sample.

Accoustic triggering devices for multiple fluid samplers and methods of making and using same

Growing community of inventors

Missouri City, TX, United States of America

Malcolm Philip Atkinson