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Petroleum Science >2021,??lssue 3:??- DOI: https://doi.org/10.1007/s12182-020-00543-w

Synergistic inhibition of polyethylene glycol and potassium chloride in water-based drilling fluids Open?Access

文章信息

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作者：Dan-Chao Huang, Gang Xie, Ni-Yuan Peng, Jian-Guo Zou, Yao Xu, Ming-Yi Deng, Wei-Chao Du, Yu-Rong Xiao, Jin-Jun Huang & Ping-Ya Luo
作者單位：

  1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, 610500, Sichuan, China

    Dan-Chao Huang, Gang Xie, Ming-Yi Deng, Wei-Chao Du, Yu-Rong Xiao, Jin-Jun Huang & Ping-Ya Luo

  2. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, Sichuan, China

    Dan-Chao Huang, Ni-Yuan Peng, Jian-Guo Zou & Yao Xu

  3. College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an, 710056, Shanxi, China

    Wei-Chao Du

Corresponding authors

Correspondence to Gang Xie or Ping-Ya Luo.


投稿時(shí)間：2021-2-15
引用方式：Huang, DC., Xie, G., Peng, NY. et al. Synergistic inhibition of polyethylene glycol and potassium chloride in water-based drilling fluids. Pet. Sci. (2021). https://doi.org/10.1007/s12182-020-00543-w

文章摘要

Mud shale hydration and swelling are major challenges in the development of water-based drilling fluids (WBDFs). In this work, the inhibition performance and inhibition mechanism of polyethylene glycol (PEG) and potassium chloride (KCl) were investigated by hot rolling recovery tests, linear swell tests, Fourier transform infrared spectroscopy, X-ray diffraction, atomic absorption spectrophotometry and X-ray photoelectron spectroscopy. The experimental results show that the combination of PEG and KCl achieved higher recovery and lower linear swelling rate than those obtained by individual PEG or KCl. Compared to the d-spacing of Na-montmorillonite (Na-Mt) with PEG or KCl, the d-spacing of Na-Mt with PEG+KCl was lower, which indicates that KCl and PEG have synergistic inhibition effect. This synergistic effect can replace sodium ions and water molecules from the interlayer space of Na-Mt and decrease the d-spacing of Na-Mt. Based on the above experimental results and analysis, a method for optimizing PEG and KCl concentrations was proposed and further verified by rheological and hot rolling recovery tests of WBDFs. Hence, the results of this work can provide valuable theoretical guidance for developing other synergistic inhibitors.

關(guān)鍵詞

    Clay hydration Inhibitor ；Synergistic inhibition ；Polyethylene glycol ；Water-based drilling fluids