Biopolymer with Polymer Concentration and Rock Properties in Berea Sandstone

An experimental program was carried out to determine the mobility of Flocon 4800 biopolymer in Berea sandstone cores. Experimental work [Pg.101]

Polymers are used for mobility control in chemical flooding processes such as micellar-polymer and caustic-polymer flooding and in polymer augmented waterflooding. Selection of a polymer for mobility control is a complex process because it is not possible to predict the behavior of a polymer in porous rock from rheological measurements such as viscosity/ shear rate curves. Polymers used for mobility control are non-Newtonian fluids. Flow characteristics are controlled by the shear field to which the polymer is subjected. Properties of polymers can be measured under steady shear in rheometers. However, in porous rock, it is difficult to define the shear environment a polymer experiences as it flows through tortuous pores. [Pg.101]

This paper describes an experimental program to characterize the flow properties of biopolymers in porous rock. An objective of the program was to develop a correlation between polymer flow in porous media and properties of the porous rock. Experimental data were obtained for the flow of biopolymer in fired Berea core material over a wide range of permeabilities. [Pg.101]

Polymers used for mobility control in oil reservoirs are non-Newtonian [Pg.102]

In the shear-thinning region, the viscosity is closely approximated by the power-law model given by Equation 1. Power-law parameters, K and n can be determined readily from analysis of data from standard rheometers. Typical values of n range between 0.2 and 0.9 for shear thinning fluids. [Pg.102]

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