▎ 摘　　要

NOVELTY - Tackifier comprises 80-90 pts. wt. viscosity-increasing agent, and 10-20 pts. wt. dispersant. The viscosity-increasing agent is a combination of graphene-based substances, gum polymers and/or nanoparticles. USE - Tackifier for drilling fluid (claimed). ADVANTAGE - The tackifier can greatly increases the viscosity of drilling fluid even when used in a small amount, and also enhances the structural force of drilling fluid. At the same time, the drilling fluid added with tackifier has reduced filtration loss, can improve the quality of filter cake, and improve stability of the well wall. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for drilling fluid, which comprises 64-70 pts. wt. base oil, 1-3 pts. wt. organic soil, 16-20 pts. wt. calcium chloride brine, 1-3 pts. wt. emulsifier, 1-3 pts. wt. fluid loss reducer, 0.5-1.5 pts. wt. wetting agent and 0.02-1.5 pts. wt. tackifier.