3D Physical Simulation Experiment of Edge Water Reservoir by Polymer/Surfactant Binary Flooding

Abstract

To investigate the enhanced oil recovery (EOR) technology by chemical flooding in an edge water reservoir, a 3D physical simulation experimental device for the edge water reservoir was developed, and polymer/surfactant binary flooding experiments were carried out under different edge water energies. In addition, the effect and mechanism of binary flooding on EOR under different edge water energies were comprehensively analyzed. Experimental results show that edge water intrusion considerably affects EOR by binary flooding. The stronger the edge water energy, the worse the effect of EOR by binary flooding. Edge water possibly diluted the concentration of the chemical agent medium that is injected into the reservoir, and the degree of dilution varied in different regions. The dilution region was mainly distributed between the injection wells and edge water. The stronger the edge water energy, the higher the dilution multiple of chemical agent and the greater the recovery loss rate by binary flooding.

Study on Screening Criteria of Gel-Assisted Polymer and Surfactant Binary Combination Flooding after Water Flooding in Strong Edge Water Reservoirs: A Case of Jidong Oilfield

“…Additionally, all of these can support the experimental research on the law of water flooding and chemical flooding under the multidirectional edge water invasion condition. Through a 3D physical simulation experiment of gel-assisted polymer and surfactant binary combination flooding under three kinds of water energy, namely, no edge water, weak edge water, and strong edge water, the influence mechanism of edge water energy on the development effect of gel-assisted polymer and surfactant binary combination flooding was clarified [ 39 ].…”

Synthesis and Properties of a Dendrimer Amphiphilic Polymer as Enhanced Oil Recovery Chemical

“…In terms of reducing chromatographic separation, surfactants with low adsorption loss and good compatibility with polymers were mainly used for replacing polymersurfactant binary fooding technology [13][14][15]. However, the above-reported methods only focused on solving one of the low shear resistance and chromatographic separation problems in polymer-surfactant binary fooding system [16,17].…”