摘要：Deep drilling often faces high-temperature and high-salt environments. Bentonite/water-based drilling fluids (BT/WBDFs) suffer serious fluid loss. Polyhedral oligomeric silsesquioxane (POSS) is introduced to synthesize a hybrid fluid loss additive (PAAD) through emulsion polymerization with acrylamide and 2-acrylamido-2-methylpropane sulfonic acid, and dimethyl diallyl ammonium chloride. The hybrid polymer exhibits improved filtration control performance in BT-WBDFs under conditions with a coexisting high Na+ concentration and high temperature. BT-WBDFs added with 2.0% PAAD exhibit satisfactory performance for reducing fluid loss under contamination of 20% NaCl, even at a high temperature of up to 220 degrees C. Microstructure analysis demonstrates that forming "polymer-clay" gel through intermolecular forces and promoting clay particle dispersion efficiently stabilizes BT-WBDFs. PAAD shields against the adverse effects of Na+ and promotes the hydration and dispersion of BT, finally forming a thin and compact filter cake. This study can provide a basis for applying POSS in the design of efficient additives for drilling fluids.

ISSN号：0887-0624

卷、期、页：卷38期11: 10019-10031

发表日期：2024-05-08

影响因子：0.000000

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：ENERGY & FUELS

参与作者：邵跃海

通讯作者：李新亮,杜明亮

第一作者：贺垠博

论文类型：期刊论文

论文概要：贺垠博,李新亮,邵跃海,杜明亮，Application of Hybrid Polymer Containing POSS as High-Temperature- and High-Salt-Resistant Fluid Loss Additive in Water-Based Drilling Fluids，ENERGY & FUELS，2024，卷38期11: 10019-10031

论文题目：Application of Hybrid Polymer Containing POSS as High-Temperature- and High-Salt-Resistant Fluid Loss Additive in Water-Based Drilling Fluids