EHR News
HTC Purenergy is our founding partner and global leader in
CO2 capture, management and EOR.
Polymer Flooding
Polymer is a non-toxic polyacrylamide powder when mixed with water turns into a gel material that is used to increase viscosity thereby improving vertical and aerial sweep efficiencies by reducing viscous fingering to further improve results of an existing water flood. The reservoir oil is typically ten or more times viscous than the injected water for an existing waterflood, causing significant fingering of water between the injector and producing well. With the addition of polymer, EHR can viscosify the water causing the push from the injector to the producer to become more piston-like. A small addition of polymer (0.1% – 1% of polymer) can increase the viscosity of the injected fluid by 10 to 100 fold. Meaning that a 0.1 percent of a polymer, you have 99.9 percent of the water still left, yet you are able to increase viscosity by a factor of 10, resulting in a significant impact in oil recovery. Polymer flooding requires additional capital expenditure for polymer hydration skids, water source wells and expansion of current water handling facilities increasing estimated expenditures by $10.00 - $13.00 / bbl over primary production capital estimations. Polymer flooding also incurs additional operating costs, approximately $3.00 - $4.00 / bbl over typical operating costs of primary production; however, the additional recoveries significantly outweigh the additional cost estimates.
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