Flexible self-adaptive material, high-temperature-resistant flexible self-adaptive anti-leakage agent and preparation method and application of high-temperature-resistant flexible self-adaptive anti-leakage agent

The invention provides a flexible self-adaptive material, a high-temperature-resistant flexible self-adaptive anti-leakage agent, a preparation method and application. The flexible self-adaptive material is prepared from a reaction product of at least the following raw materials in parts by weight: 10 to 20 parts of acrylamide, 0.5 to 1.0 part of a cross-linking agent, 1.0 to 2.0 parts of bentonite and/or modified bentonite, 0.5 to 1.0 part of curable resin, 1.0 to 2.0 parts of a fiber material and 0.01 to 0.05 part of an initiator. The high-temperature-resistant flexible self-adaptive leak-proof agent is prepared from the following components in parts by weight: 40 to 60 parts of the flexible self-adaptive material, 10 to 20 parts of a rigid granular material and 20 to 30 parts of a fiber material. The invention further provides application of the high-temperature-resistant flexible self-adaptive anti-leakage agent in petroleum drilling and completion. The high-temperature-resistant flexible self-adaptive le