Correlative multiple porosimetries for reservoir sandstones with adoption of a new reference-sample-guided computed-tomographic method

Abstract

One of the main interests in petroleum geology and reservoir engineering is to quantify the porosity of reservoir beds as accurately as possible. A variety of direct measurements, including methods of mercury intrusion, helium injection and petrographic image analysis, have been developed; however, their application frequently yields equivocal results because these methods are different in theoretical bases, means of measurement, and causes of measurement errors. Here, we present a set of porosities measured in Berea Sandstone samples by the multiple methods, in particular with adoption of a new method using computed tomography and reference samples. The multiple porosimetric data show a marked correlativeness among different methods, suggesting that these methods are compatible with each other. The new method of reference-sample-guided computed tomography is more effective than the previous methods when the accompanied merits such as experimental conveniences are taken into account.

Design and Application of a Rock Porosity Measurement Apparatus under High Isostatic Pressure

“…To better calibrate the logging analysis or investigate rock porosity more precisely, laboratory techniques for measuring porosity have been developed. The relevant methods are divided into two categories, one is the direct observation method, including X-ray computed tomography (CT) [12,13], core porosity measurement using gamma rays [14], and thin sections analysis [15]. The other is the experimental method, including mercury intrusion porosimetry (MIP) [16], the pressure/mass method [17], and the gas expansion method [18][19][20].…”