Abstract
Organic macromolecular flocculants have broad application prospects in drilling fluid systems due to their strong adsorption capacity and many other advantages. At present, polyacrylamide polymer is mostly used in drilling fluid, which is difficult to dissolve, time-consuming and laborious. In this regard, this study uses acrylamide and acrylic acid as monomers, mixes acrylic acid with potassium hydroxide, adds disodium ethylenediaminetetraacetic acid solution after adsorption and filtration, and then adds acrylamide to prepare a mixed solution, using H2O2 as the initiator, polymerization reaction in microemulsion to prepare macromolecular microemulsion flocculant. It can be quickly dissolved by adding a small amount of film release agent OP-10 during application. Through the laboratory evaluation experiment of drilling fluid, it has stronger flocculation inhibition effect on the slurry formation and drill cuttings. It has strong ability to contain drill cuttings and anti-drill cuttings pollution. It is easy to absorb water to expand and can be dispersed and collapsed. The drilling roller recovery rate is high. The field application was good when carried out in Shunbei 5-14H.
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