Behavior of partially hydrolyzed polyacrlamide solutions in porous media

Journal Article · Sat Jan 31 23:00:00 EST 1970 · J. Pet. Technol.; (United States)

DOI:https://doi.org/10.2118/2422-PA· OSTI ID:7215937

Smith, F W

Laboratory studies using silica powder, calcium carbonate powder, and crushed Berea sandstone examine the effects on partially hydrolyzed polyacrylamide by such parameters as solution salinity, flow rate, rock pore size, polymer molecular weight, mobility reduction, permeability by polymer solution, adsorption, and temperature. Three different polyacrylamides with varying molecular weights and degrees of hydrolysis were used in the study. The following conclusions were obtained: (1) calcium carbonate appears to have a greater affinity for polymer than does silica; (2) polymer adsorption increases with salt concentration; (3) polymer effectiveness in reducing mobility is greatest at lowest salinity and with highest average molecular weight; (4) as pores become smaller, polymer solutions are more effective in reducing mobility and permeability; (5) polymer solution mobility decreases markedly as the flow rate increases; (6) mechanical degradation begins to occur at very high fluid velocities and is especially pronounced in calcium containing solutions; and (7) increasing temperature seems to have little effect on mobility reduction by polymer within its range of thermal stability.

• OSTI ID: 7215937
• Journal Information: J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 22; ISSN JPTJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADSORPTION
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
FLUID INJECTION
HYDROLYSIS
LYSIS
MOBILITY
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
POLYAMIDES
POLYMERS
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SILICON COMPOUNDS
SILICON OXIDES
SOLVOLYSIS
SORPTION
WATERFLOODING
WELLS