Preparation and Performance Evaluation of Polymeric Microspheres Used for Profile Control of Low-Permeability Reservoirs
Joint Authors
Zhao, Fajun
Zhang, Hongbao
Wu, Yanping
Wang, Dawei
Zhang, Yufei
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-09
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
To improve in-depth profile control in a low-permeability reservoir, polymeric microspheres were used.
A distillation–precipitation polymerization method was adopted to prepare nanometer-sized polymeric microspheres, whose structure, apparent pattern, thermal endurance, particle size, hydration, and swelling capacity were tested and analyzed by a series of techniques, including infrared spectroscopy, scanning electron microscopy, thermogravimetry, high-pressure and high-temperature rheometry, and dynamic light scattering.
The prepared polymeric microspheres were copolymerization products of acrylamide, acrylic acid, and methyl methacrylate that were uniformly round with a centralized size distribution.
The nanometer-sized microspheres had satisfactory hydration/swelling performance, indicating that they could act as oil displacement profile control agents.
With the increase of shear rate, the apparent viscosity of the polymeric microspheres was significantly reduced, and the fluid possessed a pseudoplastic behavior.
When the shear rate was 100–1000 s−1, the fluid demonstrated a Newtonian fluid behavior.
After the polymeric microspheres were hydrated, the particle size distribution curve shows a normal distribution, reaching a maximum swelling size of 21.3 times that of the original microspheres.
The plugging performance and deformability of the polymeric microspheres gradually enhanced with swelling time, which makes the microspheres effective pore channel plugging agents for delivering a better in-depth profile control effect in rock cores with lower permeability.
The core flooding test showed that, for the heterogeneous core with a permeability of 10 μm2, polymer microspheres have good plugging effect.
American Psychological Association (APA)
Zhao, Fajun& Zhang, Hongbao& Wu, Yanping& Wang, Dawei& Zhang, Yufei. 2020. Preparation and Performance Evaluation of Polymeric Microspheres Used for Profile Control of Low-Permeability Reservoirs. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1181863
Modern Language Association (MLA)
Zhao, Fajun…[et al.]. Preparation and Performance Evaluation of Polymeric Microspheres Used for Profile Control of Low-Permeability Reservoirs. Journal of Chemistry No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1181863
American Medical Association (AMA)
Zhao, Fajun& Zhang, Hongbao& Wu, Yanping& Wang, Dawei& Zhang, Yufei. Preparation and Performance Evaluation of Polymeric Microspheres Used for Profile Control of Low-Permeability Reservoirs. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1181863
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181863