The present invention relates to the well drilling field in petroleum industry, in particular to a nano-hybrid lubricant and method thereof, and oil-based drilling fluid. The lubricant comprises: graphite oxide and a biquaternary ammonium salt compound of which the cation part is represented by formula (1). The present invention also provides a method for preparation of the lubricant and an oil-based drilling fluid containing the lubricant. The lubricant provided in the present invention can be comprehended as a nano-hybrid material. Thus, oil-based drilling fluids that contain the lubricant provided in the present invention have lower lubrication coefficient and excellent lubricating property without or with little negative impact on rheological property of the oil fluid, and the lubricant provided in the present invention has excellent thermostability thus suitable for use in operation at a high temperature.
本发明涉及石油工业中的钻井领域,尤其涉及一种纳米混合润滑剂及其方法,以及油基钻井液。该润滑剂包括:氧化石墨和双季
铵盐化合物,其中阳离子部分由式(1)表示。本发明还提供了制备该润滑剂的方法和含有该润滑剂的油基钻井液。本发明提供的润滑剂可理解为一种纳米杂化材料。因此,含有本发明所提供的润滑剂的油基钻井液具有较低的润滑系数和优异的润滑性能,而不会或几乎不会对油液的流变性能产生负面影响,并且本发明所提供的润滑剂具有优异的热稳定性,因此适用于高温作业。