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Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study

1
Department of Chemistry and Materials Engineering, Wenzhou Business College, Wenzhou 325000, China
2
Department of Mathematics, Aberystwyth University, Penglais Hill, Aberystwyth SY23 3BZ, UK
*
Authors to whom correspondence should be addressed.
Symmetry 2020, 12(7), 1086; https://doi.org/10.3390/sym12071086
Received: 9 April 2020 / Revised: 28 April 2020 / Accepted: 29 June 2020 / Published: 1 July 2020
(This article belongs to the Special Issue Liquid-Solid Interfacial Phenomena on Complex Surfaces)
Simultaneous utilization of surfactant and preformed particle gel (henceforth; PPG) flooding on the oil recovery enhancement has been widely investigated as a preferable enhanced oil recovery technique after the polymer flooding. In this paper, a numerical model is developed to simulate the profound impact of hybrid chemical enhanced oil recovery methods (PPG/polymer/surfactant) in sandstone reservoirs. Moreover, the gel particle conformance control is considered in the developed model after polymer flooding performances on the oil recovery enhancement. To validate the developed model, two sets of experimental field data from Daqing oil field (PPG conformance control after polymer flooding) and Shengli oil field (PPG-surfactant flooding after polymer flooding) are used to check the reliability of the model. Combination of preformed gel particles, polymers and surfactants due to the deformation, swelling, and physicochemical properties of gel particles can mobilize the trapped oil through the porous media to enhance oil recovery factor by blocking the high permeable channels. As a result, PPG conformance control plays an essential role in oil recovery enhancement. Furthermore, experimental data of PPG/polymer/surfactant flooding in the Shengli field and its comparison with the proposed model indicated that the model and experimental field data are in a good agreement. Consequently, the coupled model of surfactant and PPG flooding after polymer flooding performances has led to more recovery factor rather than the basic chemical recovery techniques. View Full-Text
Keywords: chemical flooding; preformed particle gel (ppg); conformance control; polymer flooding; oil recovery factor chemical flooding; preformed particle gel (ppg); conformance control; polymer flooding; oil recovery factor
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Zhou, H.; Davarpanah, A. Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study. Symmetry 2020, 12, 1086.

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