Free and Bound Water Content in Tight Rocks of Bazhenov Formation

Abstract

The paper presents data on water content separated into free, physically and chemically bound types for a collection of core samples from the Bazhenov formation. The rock samples came from 3 wells of Nizhnevartovsk arch, Western Siberia, Russian Federation. Each rock sample was a part of whole core with the maximum preserved natural water content. A suite of modern laboratory techniques includes evaporation method, derivatographic, and hygrometric studies. The results show that the content of chemically bound water (0÷6.4 wt.%) exceeds that of free (0÷1.87 wt.%) and physically bound (0÷1.0 wt.%). For the first time, we present the water content of mono-, poly-, and capillary condensation water obtained from the interpretation of adsorption isotherm. These data made it possible to draw a meaningful conclusion on mixed wettability of Bazhenov formation rocks.

Investigation of Source Rock Heating and Structural Changes in the Electromagnetic Fields Using Experimental and Mathematical Modeling

“…The third factor has to do with differences of water amount in the rocks. According to Kazak et al [31,32], Bazhenov Formation rocks contain an order of magnitude which contain more water than Domanik Formation rocks (1-8 wt% and 0.1-0.5 wt%, respectively).…”