Evaluation method of curing agent, thermosetting resin cement paste for well cementation of oil and gas field and preparation method of thermosetting resin cement paste

The invention provides an evaluation method of a curing agent, thermosetting resin cement paste for well cementation of an oil and gas field and a preparation method of the thermosetting resin cement paste. According to the evaluation method of the curing agent, the temperature-addition matrix graph is adopted for judgment, and the curing agent can be rapidly evaluated to determine the optimal addition amount. The thermosetting resin cement paste comprises a cement paste part and a resin part; the cement paste part comprises oil well cement, 3-6% of a filtrate reducer, 2-4% of an expanding agent, 0.02-0.25% of a retarder, 0.1-0.2% of a defoaming agent and 40-46% of water, and the mass of the oil well cement is 100%; the resin part comprises epoxy resin, 0.5-2% of a curing agent, 3-5% of an emulsifier and 0-170% of a weighting agent, and the mass of the epoxy resin is 100%. When the resin cement paste is in a liquid state, a permanent channel formed by weightlessness gas channeling can be prevented; in a solid