Leak-proof leak-stopping reinforcing agent

Abstract

The invention discloses a leakage-proof leak-stopping reinforcing agent, which is prepared from the following components in parts by weight: 3 to 12 parts of sodium silicate; 1-6 parts of potassium silicate; 10 to 20 parts of calcium silicate; 0.1 to 0.5 part of polyacrylamide PAM; 10 to 25 parts of calcium hydroxide; 0.1 to 1 part of low viscosity polyanionic cellulose PAC-LV; 0.1 to 1 part of water-soluble polyamide resin powder; 2-6 parts of water-soluble urea formaldehyde resin powder. A preparation method comprises the following steps: sequentially adding the above substances into a container according to the components and contents at normal temperature and normal pressure by using a conventional preparation method, uniformly mixing and stirring, and drying, crushing or sieving to obtain a granular product with the particle size of 0.05-0.8 mm. The preparation method has the advantages that the raw materials are widely avaiable; the process is scientific and simple, constructionis safe, and certain coagulation capacity is achieved; single particles are solidified together; on the basis of early-stage filling, the setting and consolidation performance of leakage well walls can be improved, the leakage stratum well walls can be reinforced, the good characteristic of repairing broken easily-leaked stratum well walls is achieved, the compounding performance with different types of plugging slurry is good, the repairing and reinforcing performance of the plugging slurry is achieved, and the leakage-proof leak-stopping reinforcing agent can be widely applied to petroleum and geological drilling engineering.

Description

technical field [0001] The invention relates to the technical field of oil drilling engineering plugging, in particular to an anti-leakage plugging reinforcing agent. Background technique [0002] The plugging materials in oil drilling engineering often use cement, MTC plugging slurry, chemical gel plugging, hard walnut shell, hard shell powder, granite, large particle size calcium carbonate, etc. as plugging reinforcement agents. These plugging additives are The oil drilling project has made contributions, but it also has the following shortcomings or deficiencies: ①The above-mentioned plugging materials have poor reinforcement performance, and the various reinforcement plugging materials are only piled together and cannot be condensed; the entire plugging agent has no cementation performance; ②After the downhole conditions change or the circulating pressure of the pump is excited during the plugging construction, it is easy to cause re-leakage; The plugging construction f...

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