An NMR Investigation of the Influence of Cation Content in Polymer Ion Retarder on Hydration of Oil Well Cement

Zhigang Qi (), Yang Chen, Haibo Yang, Hui Gao, Chenhui Hu and Qing You
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Zhigang Qi: Drilling Technology Research Institute, Sinopec Shengli Petroleum Engineering Co., Ltd., Dongying 257017, China
Yang Chen: Drilling Technology Research Institute, Sinopec Shengli Petroleum Engineering Co., Ltd., Dongying 257017, China
Haibo Yang: Drilling Technology Research Institute, Sinopec Shengli Petroleum Engineering Co., Ltd., Dongying 257017, China
Hui Gao: Drilling Technology Research Institute, Sinopec Shengli Petroleum Engineering Co., Ltd., Dongying 257017, China
Chenhui Hu: School of Energy Resources, China University of Geosciences, Beijing 100083, China
Qing You: School of Energy Resources, China University of Geosciences, Beijing 100083, China

Energies, 2022, vol. 15, issue 23, 1-10

Abstract: Low field pulse nuclear magnetic resonance (LF-NMR) was used to analyze the effects of a polymeric ion retarder and the amount of acryloxyethyl trimethylammonium chloride (DMC) in the retarder on the distribution of T 2 , thickening property, and strength of cement paste. The effect of pressure and temperature on the thickening curve was investigated, and the hydration products were analyzed using XRD. The result shows that the wrapped water of the precipitation is the main reaction aqueous phase of cement slurry in the hydration, with short T 2 time and a large relaxation peak area. The retarder weakens the van der Waals force and electrostatic adsorption force between the water and cement particles, reducing the hydration rate of cement particles. An appropriate increase in the cationic content of polymeric ion retarder can improve the early strength of cement slurry.

Keywords: NMR; oil well cement; hydration; retarder (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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