Quantitative characterization of polyacrylamide–shale interaction under various saline conditions
投稿时间:2016-09-15  
英文关键词:Anionic and cationic polyacrylamides, Chattanooga shale, Pride Mountain shale, Zeta potential, Slurry rheology
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作者单位
Samyukta Koteeswaran School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA 
Jack C. Pashin Boone Pickens School of Geology, Oklahoma State University, Stillwater, OK 74078, USA 
Josh D. Ramsey School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA 
Peter E. Clark School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA 
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英文摘要:
      Interaction of polymer-containing injected fluids with shale is a widely studied phenomenon, but much is still unknown about the interaction of charged polyacrylamides such as anionic and cationic polyacrylamides with shale. The nature of interaction of charged polyacrylamides with shale is not well understood, especially from the perspective of assessing the potential for polyacrylamides to cause formation damage. Zeta potential and rheological measurements were made for Chattanooga and Pride Mountain shales suspended in polyacrylamide solutions with and without inorganic salts and tetramethyl ammonium chloride (TMAC). The change in zeta potential and viscosity with time was recorded. The magnitude of decrease in the absolute value of zeta potential with time is indicative of adsorption of polymer on the surface of shale and serves as a measure of the extent of polymer interaction with shale. The salts that were used in this study are potassium chloride (KCl), sodium chloride (NaCl). This study quantified the interaction of anionic and cationic polyacrylamide with different North American shales. From the experimental results, it was determined that the polyacrylamides can interact strongly with shale, particularly the cationic polyacrylamide. The objective of this study was to determine the extent of interaction of anionic and cationic polyacrylamide with each shale sample in the presence of additives such as salts.
Samyukta Koteeswaran,Jack C. Pashin,Josh D. Ramsey,Peter E. Clark,2017.Quantitative characterization of polyacrylamide–shale interaction under various saline conditions.Petroleum Science,(3):586~596.
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