Research Article | OPEN ACCESS
Study on Synthesis of Polyacrylamide Microspheres and its Sealing Characteristics of Drilling Fluid
1Mingming Cheng, 2Guanglun Lei, 3Jianwu Zhen and 4Jianbo Gao
1, 2Department, China University of Petroleum, Institute of Petroleum Engineering
3Department, Drilling Engineering Institute of Zhongyuan Oil Field
4Department, China University of Petroleum, Institute of Petroleum Engineering
Research Journal of Applied Sciences, Engineering and Technology 2014 6:1217-1222
Received: March 28, 2013 | Accepted: April 22, 2013 | Published: February 15, 2014
Abstract
For the purpose of reducing the invasion depth of solid phase and liquid phase of drilling fluid and improving the quality of drilling mud cake, polyacrylamide microspheres were successfully composed via reversed phrase emulsion method. The physical and chemical structures of the samples as well as the grain-size variation were investigated by Transmission Electron Microscopy (TEM) and Laser Particle Size Analysis method (LPSA).The plugging performance of the samples were investigated by core plugging experiment and sand bed filtration experiment. TEM images show that acrylamide has been polymerized, the products consist of a lot of monodisperse microspheres with a size of about 1-6 μm. LPSA images indicate that the particle size of polyacrylamide microspheres vary with time and temperature regularly. The experiment that simulates rock strata with different permeability shows those polyacrylamide microspheres can produce effectively blocked to the core and sand bed and then it establishes the foundation for the next field test.
Keywords:
Drilling fluid, microspheres, polyacrylamide, sealing characteristics, synthesis,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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