Experimental Study on the Displacement Performance of Heat-Resistant Polymer

Abstract:

The displacement performance of heat-resistant polymer is evaluated with the artificial cores and natural cores under 95°C. The best concentration of BH heat-resistant polymer is 1500 mg/L, and the best slug is 0.6 PV on the condition of the average permeability is 600×10^-3μm² of the homogeneous core and the oil viscosity is 2.3mPa • s. Under the best concentration and the PV size, BH heat-resistant polymer solution has better displacement effect for the artificial double core whose permeability ratio is less than 4. When permeability ratio exceed 4, the displacement affect no longer increase. When the mobility ratio increase from 0.05 to 0.2, for the artificial cores, the recovery of polymer flooding reduce by 3.17%, and for the natural cores, the recovery of polymer flooding reduce by 2.26%. The recovery of BH polymer that is aged for 90 days after vacuumed is 32.29%. Comparing with the fresh BH polymer, it is lower by 6.56%. That is to say that the aged BH polymer still has good oil displacement efficiency.

• Periodical: Applied Mechanics and Materials (Volumes 675-677)
• Pages: 1495-1499
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.675-677.1495
• Online since: October 2014
• Authors: Tao Ping Chen, Biao Qiu
• Keywords: Displacement Performance, Heat-Resistant Polymer, Polymer Flooding, Polymer Flooding of High Temperature Reservoir

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