文献类型：期刊文献

英文题名：Laboratory investigation on inhibition of polyvinyl alcohol used for wireline coring drilling

作者：Huang, Yuming[1,2];Zheng, Wenlong[3];Zhang, Guoqi[4];Chen, Yong[4];Qin, Jiashuo[1]

第一作者：Huang, Yuming

通讯作者：Zheng, WL[1]

机构：[1]Henan Univ Econ & Law, Sch Engn Management & Real Estate, Zhengzhou 450001, Henan, Peoples R China;[2]Henan Univ, Postdoctoral Stn, Zhengzhou 450046, Henan, Peoples R China;[3]North China Univ Water Resources & Elect Power, Zhengzhou 450001, Henan, Peoples R China;[4]China First Highway Engn Co Ltd, Beijing 100024, Peoples R China

第一机构：河南财经政法大学工程管理与房地产学院

通讯机构：[1]corresponding author), North China Univ Water Resources & Elect Power, Zhengzhou 450001, Henan, Peoples R China.

年份：2024

外文期刊名：JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY

收录：;EI(收录号：20242116130692);Scopus(收录号：2-s2.0-85193634015);WOS:【SCI-EXPANDED(收录号:WOS:001226907700001)】；

基金：This work was supported by School-level research projects of Henan University of Economics and Law (No. 22HNCDXJ17).

语种：英文

外文关键词：Diamond wireline core drilling; Solids-free drilling fluid; Inhibition; Polyvinyl alcohol; Hydrogen bond

摘要：To address the problems of wall collapse, cuttings slurrying, and scaling on the inner wall of the drill pipe, which often occur in small-diameter diamond wireline core drilling, the inhibition properties of polyvinyl alcohol (PVA) was investigated, and the formulation of solids-free drilling fluid with PVA as the inhibitor were completed. PVA has the advantages of fast adsorption and easy regulation of rheological properties Firstly the inhibition effect of PVA was compared with that of common inorganic salts (sodium chloride, NaCl, potassium chloride, KCl) by bentonite dispersion test, linear swelling test, shale rolling recovery test and mud ball immersion test in this study. Then, the inhibition mechanism of PVA was analyzed with potentiometric particle size tests, Fourier transform infrared (FT-IR) and X-ray Diffraction (XRD) measurements. Based on the outstanding inhibition performance of PVA, tackifiers and filtration reducers were preferred through the compatibility test. And finally, the effects of various contaminants on the comprehensive performance of the formulated solids-free drilling fluids were evaluated. The results showed that PVA exhibited better inhibition of clay hydration and dispersion in shale recovery and linear swelling compared to NaCl and KCl, which was particularly evident in the mud ball immersion test. FT-IR and XRD tests revealed that the inorganic salts were used to replace the cations with larger radius and high degree of hydration in the clay layer by ion exchange ti achieve the effect of clay de-watering by reducing the spacing of the clay interlayer and the electrostatic repulsion between the particles. However, PVA is strongly adsorbed on the clay surface in the form of hydrogen bonds due to its unique multi-hydroxyl chain structure, forming a hydrophobic barrier to prevent water molecules from entering the clay layer, thus inhibiting the hydration and swelling of the clay. Using PVA as an inhibitor, compounded with xanthan gum, sulfonated lignite resin and sulfonated gilsonite (FT-1), the solids-free drilling fluid is promising for use in diamond wireline core drilling in complex formations.