Synthesis and properties of high temperature resistant and salt tolerant filtrate reducer N,N-dimethylacrylamide 2-acrylamido-2-methyl-1-propyl dimethyl diallyl ammonium chloride N-vinylpyrrolidone quadripolymer
-
Zhengguo Zhao
,
Xiaolin Pu
Abstract
N,N-dimethylacrylamide (DMAA), 2-acrylamido-2-methyl-1-propyl (AMPS), dimethyl diallyl ammonium chloride (DMDAAC) and N-vinylpyrrolidone (NVP) monomers were copolymerized to synthesize a zwitterionic copolymer filtrate reducer. The results of Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) indicated that the molecular structure and chemical compositions of the quadripolymer matched with the design, and the result of the differential scanning calorimetry (DSC)-thermogravimetric analysis (TGA) showed that the polymer had good thermal stability. The effects of the quadripolymer on the properties and salt tolerance of drilling fluids were investigated. The environmental scanning electron microscope (ESEM) was used to observe the microstructure of the DMAA/AMPS/DMDAAC/NVP quadripolymer-bentonite system and filter cake of the drilling fluid added the copolymer. Results showed that a one space grid structure was formed by the molecular film with a hydrophobic association effect and electrostatic interaction between the groups in the positive and negative charges of the quadripolymer. It adsorbed and coated clay particles, and kept the particles distributing multilevels which contributed to forming a compact filter cake to reduce fluid loss. The spatial structure of the quadripolymer in drilling fluid could be destroyed partly by high temperatures, sodium and calcium, but the polymer still had a good effect on reducing fluid filtration.
Acknowledgments
We gratefully acknowledge the financial support of the Open Fund (PLN1310) of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) and the National Natural Science Foundation of China (no. 51304169).
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Articles in the same Issue
- Frontmatter
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- Original articles
- Synthesis and properties of high temperature resistant and salt tolerant filtrate reducer N,N-dimethylacrylamide 2-acrylamido-2-methyl-1-propyl dimethyl diallyl ammonium chloride N-vinylpyrrolidone quadripolymer
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Articles in the same Issue
- Frontmatter
- Review
- Aided manufacturing techniques and applications in optics and manipulation for ionic polymer-metal composites as soft sensors and actuators
- Original articles
- Synthesis and properties of high temperature resistant and salt tolerant filtrate reducer N,N-dimethylacrylamide 2-acrylamido-2-methyl-1-propyl dimethyl diallyl ammonium chloride N-vinylpyrrolidone quadripolymer
- Preparation and characterization of non-isocyanate polyurethanes based on 2-hydroxy-6-naphthalenesulfonic acid as a monomer of the rigid phase
- Preparation of poly(aspartic acid) superabsorbent hydrogels by solvent-free processes
- Effect of carbon fiber surface modification on the flexural mechanical properties of carbon fiber reinforced polyetheretherketone biocomposites
- Analysis of the tensile properties of natural fiber and particulate reinforced polymer composites using a statistical approach
- Study on the deformation behavior of polyamide under the backward extrusion process
- High photoelectric PPV/PVA/Ag composite nanofibers by co-electrospinning
- Enhanced delivery of diclofenac diethylamine loaded Eudragit RL 100® transdermal system against inflammation
- Fabrication of hollow fiber microfiltration membrane from PVDF/DBP/DBS system via thermally induced phase separation process
