Отправлено: 02.10.12 01:54. Заголовок: Подвернулась давняя статья Tenchov (Гоце Тенчова)

Electrochemical activity of shaly sands
G.G. Tenchov
Department of Meteorology and Geophysics, Physical Faculty, Sofia University, A. Ivanov Bid. 5, Sofia 1126, Bulgaria
(Received May 10, 1990; accepted after revision October 18, 1990)
ABSTRACT
Journal of Petroleum Science and Engineering, 6 ( 1991 ) 81-89
Elsevier Science Publishers B.V., Amsterdam

Tenchov, G.G., 1991. Electrochemical activity of shaly sands. J. Pet. Sci. Eng., 6: 81-89.
The electrochemical activity of shaly sandstone is principally confined to the bound water volume per unit pore volume
at standard conditions. On the basis of the dual water model and sample data, the electrochemical activity is shown to be
related to the cation exchange capacity. The advantage of the electrochemical activity, with respect to the cation exchange
capacity, is that the former can be obtained by nondestructive techniques of core samples by measuring their electrical
conductivities. A relationship between water permeability, formation factor, pore radius and shaly sandstone electro-
chemical activity is theoretically obtained using the fluid flow and the electrical conductivity analogy in shaly sands. It is
compared to the sample data. A statistical relationship between mean pore channel radius and electrochemical activity of
shaly sandstone is stated.
Both the upper limit of cation exchange concentration per unit pore volume and the probable radii of the pore channels
in ideal shale are stated.
The results yield the possibility that the electrochemical activity can be used instead of the cation exchange capacity as
a parameter relating reservoir and structural parameters of shaly sandstones.

В ней он, в частности, ссылается на синию книжку Элланского (включающую и мои разделы)