Details

Autor(en) / Beteiligte

• Dutta, Partha P.
• Li, Tao
• Gianchandani, Yogesh B.

Titel

A Sensing Microsystem for High Resolution Pressure Gradient Measurement in Core-Flood Experiments

Ist Teil von

• 2019 IEEE SENSORS, 2019, p.1-4

Ort / Verlag

IEEE

Erscheinungsjahr

2019

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• Investigating the permeability and porosity of geological samples is a routine element of geological studies, and of particular interest to the oil and gas industry. Core-flood experiments are commonly performed on rock samples to measure transport characteristics in the laboratory. This paper reports the design and implementation of a high resolution distributed pressure measurement system for core-flood experiments. A series of microfabricated pressure sensors are embedded in bolts housed within the pressurized polymer sheath that encases the rock core. A feedthrough technology has been developed to provide lead transfer between the sensors and system electronics across a 230-bar pressure difference. The system has been successfully benchtop tested with fluids such as synthetic oil and/or gas. Pressure measurements were recorded over a dynamic range of 20 bar with a resolution as small as 0.3 mbar.