High-temperature-resistant oil-based drilling fluid for plugging while drilling and preparation method thereof

The invention discloses a high-temperature-resistant oil-based drilling fluid for plugging while drilling and a preparation method of the high-temperature-resistant oil-based drilling fluid, and belongs to the technical field of petroleum drilling engineering. The high-temperature-resistant oil-based drilling fluid for plugging while drilling comprises the following components: an oil phase, a water phase, an emulsifier, organic soil, a filtrate reducer, polyacrylate particles and butadiene styrene rubber. The high-temperature-resistant oil-based drilling fluid for plugging while drilling can enter formation pores and absorb oil to expand so as to form a layer of water-resistant film, is tight and firm in adhesion, is not easy to peel off, has certain pressure resistance, is suitable for being used in a high-temperature environment, has good leakage resistance, can be applied to different types of oil-based drilling fluids, is suitable for drilling construction, and has the advantages of small oil absorption