Baker Hughes Corporation

Gigi Zhang

Songhua Chen

Daniel T Georgi

Matthias Meister

Francisco Galvan-Sanchez

Olufemi A Adegbola

Chris J Morgan

An apparatus for estimating a property of an earth formation includes a carrier configured to be conveyed through a borehole penetrating the formation and a single probe configured to be extended from the carrier and to seal with a wall of the borehole. The apparatus further includes a fluid analysis sensor disposed at the carrier and configured to sense a property of a formation fluid sample extracted from the formation by the probe. A coring device is disposed at the carrier and configured to extend into the probe, to drill into the wall of the borehole, and to extract a core sample. A core sample analysis sensor is disposed at the carrier and configured to sense a property of the core sample. A processor is configured to receive data from the fluid analysis sensor and the core sample analysis sensor and to estimate the property using the data.

LWD in-situ sidewall rotary coring and analysis tool

Spin echo signals measured with a multifrequency NMR logging tool are analyzed to determine if one or more of the regions of examination associated with each of the frequencies has signal contamination from borehole fluids. A variety of different methods can be used for analysis. Corrected spin echo signals can be obtained and processed to give improved estimates of formation parameters.

Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data

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Cypress, TX, United States of America

Gigi Zhang