摘要：The development of various nanoparticles and their successful application in oil and gas drilling engineering is an extremely interesting and crucial area of research, particularly in the field of drilling fluids. In this study, styrene, butyl acrylate, acrylamide, and 2-acrylamide-2-methylpropanesulfonic acid were used as the main raw materials to synthesize a polymer nanolatex (SBAA) employing a conventional emulsion polymerization approach (one-pot method). SEM, TEM, and PSD experiments demonstrated that SBAA is a nanoparticle with a particle size of around 150 nm and a distinct core-shell structure. The TGA analysis revealed that SBAA had a decomposition temperature of 296 degrees C. Particularly, the unique self-assembly behavior of nanolatex particles is discussed for the first time using TEM and UV-Vis experiments. Additionally, filtration and permeability plugging tests were used to evaluate the filter loss reduction and micro-pore plugging ability of the SBAA in water-based drilling fluids. The findings showed that SBAA could reduce the medium pressure filtration loss by around 33% compared with the basic bentonite fluid, and the reduction rate after aging at 200 degrees C is around 41%. Particularly, it can reduce the filtrate loss velocity of water-based drilling fluid in heterogeneous pores, and the effects of filtration reduction and mud cake quality enhancement outperform those of commercial nanosilica particles. This study offers a novel reference approach for developing novel nanomaterials for water-based mud to plug microscopic pores and maintain wellbore stability.

关键字：Core -shell structure; Nanolatex; Self -assembly; Microporous plugging; Water -based drilling fluid; Filtration loss

ISSN号：2949-8929

卷、期、页：卷: 223

发表日期：2023-04-01

影响因子：0.000000

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：GEOENERGY SCIENCE AND ENGINEERING

通讯作者：杨俊,王国帅,董腾飞,袁学强

第一作者：蒋官澄,杨丽丽,贺垠博

论文类型：期刊论文

论文概要：杨俊,蒋官澄,王国帅,杨丽丽,贺垠博,董腾飞,袁学强，Performance evaluation of polymer nanolatex particles as fluid loss control additive in water-based drilling fluids，GEOENERGY SCIENCE AND ENGINEERING，2023，卷: 223

论文题目：Performance evaluation of polymer nanolatex particles as fluid loss control additive in water-based drilling fluids