Expansion and solidification type plugging agent
A plugging agent and consolidation type technology, which is applied in the field of drilling plugging agent, can solve the problems that affect the plugging effect and drilling engineering, long plugging time, economic loss, etc., and achieve good fluidity and suspension carrying performance, plugging The effect of high leakage success rate and no pollution to the environment
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[0020] Case 1
[0021] Calcium sulfoaluminate expansion agent 0.5; polypropylene fiber 1; water-absorbing swellable polymer 0.1; superabsorbent resin SAP 1; expanded starch 2; salt-resistant clay 2; calcium carbonate 20; high-viscosity polyanionic cellulose PAC-HV 0.1 The above-mentioned substances are added into the kneader according to their components and contents under normal temperature and pressure, and are mixed and stirred evenly by conventional preparation methods. Salt-resistant clay is attapulgite.
[0022] When in use, the expansion and consolidation type lost circulation agent of the present invention is added to the lost circulation drilling fluid with a total amount of 2% of the lost circulation drilling fluid.
[0023] Case 2
[0024] Calcium sulfoaluminate expansion agent 1; polypropylene fiber 2; water-absorbing swellable polymer 0.5; superabsorbent resin SAP 2; expanded starch 4; salt-resistant clay 3; calcium carbonate 27; high-viscosity polyanionic cellu...
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