Petroleum Science >2017,??Issue 1:??105-115 DOI: https://doi.org/10.1007/s12182-016-0135-0
Hydrophobic silica nanoparticle-stabilized invert emulsion as drilling fluid for deep drilling Open?Access
文章信息
作者：Maliheh Dargahi-Zaboli,Eghbal Sahraei and Behzad Pourabbas
作者單位：
Department of Chemical Engineering, Petroleum Research Center, Sahand University of Technology, Tabriz, Iran;Department of Chemical Engineering, Petroleum Research Center, Sahand University of Technology, Tabriz, Iran;Department of Polymer Engineering, Nanostructured Materials Research Center, Sahand University of Technology, Tabriz, Iran
投稿時間：2015-09-15
引用方式：Dargahi-Zaboli, M., Sahraei, E. & Pourabbas, B. Pet. Sci. (2017) 14: 105. https://doi.org/10.1007/s12182-016-0135-0
文章摘要
An oil-based drilling fluid should be stable and tolerant to high temperatures for use in deep drilling. An invert emulsion of water in oil is a good choice as an oilbased drilling fluid which is a mixture of a solid phase and two immiscible liquid phases stabilized by a polymeric surfactant. In deep drilling, due to high temperatures, the polymeric surfactant degrades and a phase separation occurs. Here, octadecyltrimethoxysilane-modified silica nanoparticles were used to form a stable invert emulsion of water in oil for the drilling fluid model which resulted in a milky fluid with the formation of 60 μm water droplets. In addition, rheological study showed that using hydrophobic silica nanoparticles resulted in a stable water in oil invert emulsion with desired properties for a drilling fluid that can be modified by adjusting the nanoparticle nature and content. Aging experiments at 120 ℃ indicated that they also have good stability at high temperatures for challenging drilling operations.
關鍵詞
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Deep drilling · Drilling fluid model · Hightemperature aging · Rheology · Silica nanoparticles · Stable invert emulsion