Application of sustainable basil seed as an eco-friendly multifunctional additive for water-based drilling fluids
Application of sustainable basil seed as an eco-friendly multifunctional additive for water-based drilling fluids
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DOI：
10.1016/j.petsci.2021.05.005
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发表时间：
2021-08-01
影响因子：
5.6
通讯作者：
Huang, Wei-An
中科院分区：
文献类型：
--
作者：
Gao, Xin;Zhong, Han-Yi;Huang, Wei-An
罗勒子的外层果皮中含有阴离子杂多糖，浸泡在水中时会膨胀为凝胶状的水胶体。采用罗勒籽粉(BSP)作为水基钻井液的多功能处理剂。测试了BSP水悬浮液的化学组成、吸水率、流变性。研究了BSP对膨润土基钻井液热老化前后流变性和滤失量的影响。通过线膨胀、页岩岩屑分散和页岩浸泡实验评价了缓蚀剂的缓蚀性能。用极压润滑性试验测定了BSP对润滑性的改善。结果表明，在膨润土悬浮液中加入BSP能有效地改善120℃热老化后的流变性和滤失性。BSP对黄原胶具有良好的抑制作用，并与KCl有协同作用。BSP可通过形成水化层来降低摩擦。纳米级的三维网络结构使BSP在膨润土和金属表面保持高保水性和强吸附，有助于增强流变性、滤失性、缓蚀性和润滑性。BSP的通用性和生物降解性使其成为高性能水基钻井液处理剂和传统合成聚合物的潜在替代品。(C)2021年提交人。爱思唯尔公司代表科爱通信有限公司提供的出版服务。
Basil seed, containing anionic heteropolysaccharides in its outer pericarp, swells as gelatinous hydro colloid when soaked in water. In this study, basil seed powder (BSP) was used as a multifunctional additive for water-based drilling fluids. The chemical composition, water absorbency, rheological properties of aqueous suspension of BSP were tested. The effect of BSP on the rheological and filtration of bentonitebased drilling fluid before and after thermal aging was investigated. The inhibition characteristics were evaluated by linear swelling, shale cuttings dispersion and shale immersion test. Lubricity improvement by BSP was measured with extreme pressure lubricity test. The results revealed that incorporation of BSP into bentonite suspension improved rheological and filtration properties effectively after thermal aging of 120 degrees C. BSP exhibited superior inhibitive capacity to xanthan and synergistic effect with KCl. BSP could reduce friction by forming hydration layer. The nanoscale three-dimensional network structures enable BSP to maintain high water retention and absorb strongly on bentonite and metal surface, contributing to enhanced rheology, filtration, inhibition and lubrication properties. The versatile characteristic of BSP, as well as biodegradation makes it a promising additive using in high performance water-based drilling fluid and a potential alternative to conventional synthetic polymers. (c) 2021 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.