Baker Hughes Corporation

Angus J Simpson

Rocco DiFoggio

Michael Shammai

Marcelo Civarolo

Francisco Galvan-Sanchez

Jianghui Wu

Wade Bullock

Sefer B Coskun

Marvin L Raney

An apparatus made according to one embodiment may include a first chamber configured to receive fluid under pressure and to compress a gas in a second chamber in pressure communication with the first chamber, wherein the second chamber is configured to discharge the fluid out from the first chamber when pressure of the fluid in the first chamber is reduced.

Apparatus and method for formation testing

A method and apparatus is described for estimating terminal purity or terminal contamination for a fluid during the withdrawal of the fluid from a subsurface formation. The apparatus and method provide for measuring refractive index of the fluid over a time period, fitting a curve through the refractive index measurements or data values derived therefrom and estimating a terminal refractive index or terminal value for the data values from the fitted to curve to estimate the terminal contamination or purity for the fluid.

System and method for estimating filtrate contamination in formation fluid samples using refractive index

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Cypress, TX, United States of America

Angus J Simpson