Solution properties of water soluble macromolecules for enhanced oil recovery applications

Thesis/Dissertation · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5516484

Lindner, J S

Static and dynamic light scattering, dilute solution viscometry and membrane osmometry were used to determine the solution properties of two different series of copolymers. A series of dextran polysaccharides and poly(acrylamides) differing in molar mass were evaluated. Dextrans were observed to obey the relationships Dz = 8.45 x 10/sup -5/ M/sup x/ and eta = 0.366 M/sup y/ where x = -0.5, y = 0.39, Dz is the translational z-average diffusion coefficient, eta the intrinsic viscosity, and M the molecular weight. The exponents of both power laws indicate that dextrans were branched polymers and that water was a marginal solvent. Poly(acrylamides) were described by Dz = 1.25 x 10/sup -4/ M/sup x/ and eta = 6.36 x 10/sup -3/ M/sup y/ where x = -0.54 and y = 0.79. The exponents indicated that poly(acrylamides) exhibit extensive excluded volumes and extended configurations in water. Dextran-g-acrylamide copolymers with small numbers of branches tended to associate while samples with high branching densities exhibited polyelectrolyte behavior. Addition of 0.1 N KCl to aqueous solutions of the graft copolymers resulted in normal solution behavior. Associates species were disrupted by the action of the salt on hydrogen bonds. Unshielded ionizable groups were neutralized. Derived solution parameters did not depend on previously reported structural characteristics. In brine, linear copolymers of acrylamide with Na-2-acryamido-2 methylpropane/sulfonate (AMPS) exhibited large excluded volumes. Consideration of the solution properties of the two different copolymer series indicated that linear copolymers of acrylamide with AMPS may be useful in enhanced oil recovery application. Dextran-g-acrylamide copolymers offer no distinct advantages.

• Research Organization: Mississippi State Univ., State College (USA)
• OSTI ID: 5516484
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
COPOLYMERS
SOLVENT PROPERTIES
DISPLACEMENT FLUIDS
ACRYLAMIDE
DEXTRAN
ENHANCED RECOVERY
LIGHT SCATTERING
MOLECULAR WEIGHT
OSMOSIS
PETROLEUM
POLYAMIDES
POLYSACCHARIDES
VISCOSIMETERS
VISCOSITY
AMIDES
BLOOD SUBSTITUTES
CARBOHYDRATES
DIFFUSION
DRUGS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HEMATOLOGIC AGENTS
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
RECOVERY
SACCHARIDES
SCATTERING
020300* - Petroleum- Drilling & Production