1. 1-15. (canceled) 16. A method for preparing the water-based drilling fluid, comprising: mixing bentonite, a tackifier, a diluent, a filtrate reducer, an anti-collapse agent, a reservoir protectant, a lubricant, and water homogeneously; wherein the mixing comprises: mixing bentonite with water, adding the tackifier after h and stirring; and adding the filtrate reducer, the anti ...
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