Experimental study on low temperature performance of polymer drilling mud agents |
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| Authors: | ZHAN Jiajia XU Huiwen CAI Hongliang |
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| Institution: | 1. College of Construction Engineering, Jilin University, Changchun 130026, China
2. China Water Northeastern Investigation Design and Research Co. Ltd, Changchun 130061, China |
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| Abstract: | Drilling fluid additives has a major impact on rheology behavior and other performances of the drilling fluid. The key to low temperature drilling fluids is choosing antifreeze and polymer agent which have a strong ability in resisting low temperature. On the basis of determining glycol as antifreeze agent, the low-temperature-performance and capacities of anti-collapse of regular validity mud agents have been studied, the mechanism of anti-caving of the partially hydrolyzed polyacrylamide (PHPA), polypropylene potassium (KPA) and PAC-141 polymer additives have been also analyzed. A pilot study of compatibility between ethylene glycol and the polymers has educed that the polymers, ethylene glycol and inorganic salt are compatible, and they can significantly reduce the freezing point of drilling fluid. Anti-collapse ability of the drilling mud is the results of synergistic action among the agents. |
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| Keywords: | polymer low temperature performance antifreeze agent mechanism of anti-caving synergistic action |
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