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Book Chapter

Some Definitions

Published:
January 01, 1987

Abstract

The abbreviation TDS means total dissolved solids, best expressed in units of grams per liter, g/L, or milligrams per liter, mg/L. SALINITY, as used here, is synonomous with TDS. A much more formal and precise definition exists for seawater salinity, but is not required here.

The fluids which are the subject of this course are variously called: formation waters, subsurface sedimentary brines, basinal brines, oil field brines, pore waters, and connate brines. The term connate brine, as we will discuss in the next section, carries with it a specific genetic connotation. The other terms are better generic descriptors.

Many reserve the term BRINE for pore fluids having salinities in excess of 100,000 mg/L. Carpenter's (1978) classification is the best formal scheme for those who would like to use one:

I will use the term BRINE here in a much looser sense, without strict observance of the 100,000 mg/L lower limit. I have used 'brine' in the title of this short course and book to get the idea across that they deal with deep, basinal waters, not shallow, potable water systems.

The term GROUND WATER is usually reserved for shallow, fresh pore waters. The term METEORIC WATER will be used here to describe waters derived from rain or snow and having the isotopic composition of normal precipitation.

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Contents

SEPM Short Course Notes

Origin and Migration of Subsurface Sedimentary Brines

Jeffrey S. Hanor
Jeffrey S. Hanor
Department of Geology and Geophysics Louisiana State University Baton Rouge, LA 70803
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SEPM Society for Sedimentary Geology
Volume
21
ISBN electronic:
9781565760998
Publication date:
January 01, 1987

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