| abstract |
The invention relates to a dual-response self-degradation temporary plugging agent and a preparation method thereof. When the temporary plugging agent is used, the temporary plugging agent enters a stratum under the carrying of injected water, preferentially enters and plugs a high-permeability layer, and is degraded and weakened when the temperature reaches the decomposition temperature of the self-degradable crosslinking monomer, so that the temporary plugging agent can be dissolved and failed in one step under the action of subsequent acid liquid, can be completely degraded and dissolved in oil or water, and effectively reduces the damage to a reservoir stratum. |