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Novel Acrylamide/2-Acrylamide-2-methylpropanesulfonic Acid/4-Vinylpyridine Terpolymer as an Anti-calcium Contamination Fluid-Loss Additive for Water-Based Drilling Fluids

A novel terpolymer of acrylamide (AM), 4-vinylpyridine (VP), and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) was synthesized through free radical polymerization and characterized by proton nuclear magnetic resonance, Fourier transform infrared spectroscopy, elemental analysis, and static light scattering measurement. The monomer ratio was shown to be the predominant factor to the fluid-loss control performance of this polymer in drilling fluids. The terpolymer under optimal polymerization conditions (PAAV) was prepared, and the dipolymer of AM and AMPS (PAA) was synthesized as a contrast sample. In an American Petroleum Institute (API) filtration test of bentonite-based mud with 10% CaCl2 contamination after a 16 h aging at 150 °C, mud with 1% PAAV maintained an API filtrate volume (FLAPI) of 4.8 mL, whereas mud with 1% PAA reached a FLAPI of 96.0 mL. The fluid-loss control mechanism of PAAV was investigated through adsorption experiments, ζ potential measurements, and particle size distribution anal...

Authors:   Jie Cao; Lingwei Meng; Yuping Yang; Yuejun Zhu; Xiaoqiang Wang; Chengyan Yao; Mingbo Sun; Hanyi Zhong
Journal:   Energy & Fuels
Year:   2017
DOI:   10.1021/acs.energyfuels.7b02354
Publication date:   27-Oct-2017
Facts, background information, dossiers
  • bentonite
  • American Petroleum…
  • adsorption
More about American Chemical Society Publications
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