Abstract：
The application of cellulose derivatives including carboxymethyl cellulose (CMC), polyanionic cellulose (PAC), hydroxyethyl cellulose (HEC), cellulose nanofibrils (CNFs), and cellulose nanocrystals (CNCs) has gained enormous interest, especially as environmentally friendly additives for water-based drilling fluids (WBDFs). This is due to their sustainable, biodegradable, and biocompatible nature. Furthermore, cellulose nanomaterials (CNMs), which include both CNFs and CNCs, possess unique properties such as nanoscale dimensions, a large surface area, as well as unique mechanical, thermal, and rheological performance that makes them stand out as compared to other additives used in WBDFs. The high surface hydration capacity, strong interaction with bentonite, and the presence of a complex network within the structure of CNMs enable them to act as efficient rheological modifiers in WBDFs. Moreover, the nano-size dimension and facilely tunable surface chemistry of CNMs make them suitable as effective fluid loss reducers as well as shale inhibitors as they have the ability to penetrate, absorb, and plug the nanopores within the exposed formation and prevent further penetration of water into the formation. This review provides an overview of recent progress in the application of cellulose derivatives, including CMC, PAC, HEC, CNFs, and CNCs, as additives in WBDFs. It begins with a discussion of the structure and synthesis of cellulose derivatives, followed by their specific application as rheological, fluid loss reducer, and shale inhibition additives in WBDFs. Finally, the challenges and future perspectives are outlined to guide further research and development in the effective utilization of cellulose derivatives as additives in WBDFs.
摘要：
纤维素衍生物的应用包括羧甲基纤维素(CMC),聚阴离子纤维素（PAC），羟乙基纤维素(HEC),纤维素纳米原纤维（CNFs），纤维素纳米晶体（CNCs）获得了巨大的兴趣，特别是作为水基钻井液（WBDFs）的环保添加剂。这是由于它们的可持续性，可生物降解，和生物相容性。此外，纤维素纳米材料(CNM)，包括CNF和CNCs，具有独特的特性，如纳米级尺寸，一个大的表面积,以及独特的机械，热,和流变性能使它们与WBDF中使用的其他添加剂相比脱颖而出。高表面水化能力，与膨润土强烈的相互作用，CNM结构中复杂网络的存在使它们能够在WBDF中充当有效的流变改性剂。此外，CNM的纳米尺寸和易于调节的表面化学性质使它们适合作为有效的降滤失剂以及页岩抑制剂，因为它们具有渗透能力，吸收，并堵塞暴露地层内的纳米孔，并防止水进一步渗透到地层中。本文综述了近年来纤维素衍生物的应用进展,包括CMC,PAC,HEC,CNFs,和CNCs，作为WBDF中的添加剂。首先讨论纤维素衍生物的结构和合成，其次是它们作为流变学的具体应用，降滤失剂,和WBDFs中的页岩抑制添加剂。最后,概述了挑战和未来前景，以指导在WBDF中有效利用纤维素衍生物作为添加剂的进一步研究和开发。
