Increased Oil Recovery from Mature Oil Fields Using Gelled Polymer Treatments

Willhite, G.P. ; Green, D.W. ; McCool, S.

National Petroleum Technology Program (U.S.)

关键词: Formation Damage;    Sample Preparation;    02 Petroleum;    Oil Fields;    Polymers;   

DOI  :  10.2172/776495
RP-ID  :  DOE/BC/15209-3
RP-ID  :  AC26-99BC15209
RP-ID  :  776495

美国|英语

来源: UNT Digital Library

【 摘 要 】

Gelled polymer treatments were applied to oil reservoirs to increase oil production and to reduce water production by altering the fluid movement within the reservoir. This report is aimed at reducing barriers to the widespread use of these treatments by developing methods to predict gel behavior during placement in matrix rock and fractures, determining the persistence of permeability reduction after gel placement, and by developing methods to design production well treatments to control water production. Procedures were developed to determine the weight-average molecular weight and average size of polyacrylamide samples in aqueous solutions. Sample preparation techniques were key to achieving reproducible results.