Нефтегазовые нанотехнологии для разработки и эксплуатации месторождений. Часть 3. Евдокимов И.Н - 26 стр.

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The 3rd World Congress on Emulsion (CME 2002)

Lyon, France 2002

PECULIARITIES OF RHEOLOGY OF CRUDE OIL

AND BITUMEN EMULSIONS AT INDUSTRIALLY

IMPORTANT TEMPERATURES

Evdokimov I.N., Eliseev D.Yu., Eliseev N.Yu.

Dept. of Physics, Gubkin Russian State University of Oil and Gas,

1. Introduction

The factors contributing to the rheological parameters and to the

colloid structure of petroleum emulsions is a problem of great con-

cern and economic importance to the oil companies in the produc-

tion of oil from underground reservoirs. Crude oils are mostly in-

variably accompanied by water. Water-in-crude oil emulsions are

usually produced by the shear action and the pressure gradient

drop in the well-head chokes and valves and in the production

pipelines. Bitumen emulsions are injected into oil reservoirs to in-

crease recovery efficiency. There is a high industrial demand for

viscosity data for petroleum emulsions, particularly for those with

very heavy oil components, rich in resins and asphaltenes. Still,

only a limited number of results are available as detailed functions

of such external parameter as temperature. The determination of

the inner structure of emulsions via the majority of structure-

sensitive measurements is only possible when the fluid is at rest.

In contrast, rheometrical measurements offer an indirect means to