Doctoral Dissertations


Jiaming Geng

Keywords and Phrases

Adsorption; Emulsion; EOR; Nanogel; Transport


“Nanomaterials have been developed and applied for enhanced oil recovery (EOR) in oil industry. Among the developed nanomaterials, nano-sized crosslinked polymeric gel particles (nanogels) have shown the potential in improving both the macro- and micro-displacing efficiency. This dissertation focuses on the synthesis and the potential EOR mechanisms of nanogels. Nanogels with positive, negative, and neutral charges were synthesized through suspension polymerization. The morphology, size distribution, and zeta potential of nanogels were elucidated by corresponding technologies, such as scanning electron microscopy and dynamic light scattering. The ability of nanogels in oil-water interfacial tension (IFT) reduction and oil-in-water (o/w) emulsion stabilization was studied at various nanogel concentrations, temperatures, and salinities. Moreover, nanogels showed an electro-interaction controlled adsorption on the rock surface, which could modify the wettability of rock surface and reduce the permeability of porous medium. The core flooding results demonstrate that nanogels with proper charges can easily transport through the porous medium and reduce the water permeability by forming multilayer adsorption on the rock surface. The residual oil was produced in o/w emulsion state during the nanogel flooding and in isolated oil drops during the post water flooding, which indicated the abilities of nanogels in increase the displacing efficiency and sweeping efficiency, respectively”--Abstract, page iv.


Bai, Baojun

Committee Member(s)

Schuman, Thomas P.
Flori, Ralph E.
Dunn-Norman, Shari
Wronkiewicz, David J.


Geosciences and Geological and Petroleum Engineering

Degree Name

Ph. D. in Petroleum Engineering


The authors would like to express their grateful acknowledgement to the financial support from DOE under the contract of DE-FE0024558.


Missouri University of Science and Technology

Publication Date

Fall 2018

Journal article titles appearing in thesis/dissertation

  • Surface charge effect of nanogel on emulsification of oil in water for fossil energy recovery
  • Transportation and potential enhanced oil recovery mechanisms of nanogels in sandstone
  • Experimental study on charged nanogels for interfacial tension reduction and emulsion stabilization at various salinities and oil types
  • pH-responsive Pickering emulsion stabilized by polyacrylamide nanogels for crude oil recovery


xvii, 190 pages

Note about bibliography

Includes bibliographic references.


© 2018 Jiaming Geng, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 12012

Electronic OCLC #