A method and apparatus for determining the wettability of an earth formation wherein a fluid sample from the wall of a borehole penetrating said formation is extracted then reinjected into the wall of the formation. A pressure versus time curve is generated throughout the test from which the wettability...http://www.google.de/patents/US5148705?utm_source=gb-gplus-sharePatent US5148705 - Method and apparatus for determining the wettability of an earth formation
