Abstract
The physico-chemical properties of the Unifloc polymer sample provided by VNIIBT (Moscow) were studied. And also the influence of this powdered reagent on the basic properties of clay solutions used in the Noyabrsk oil and gas region of Western Siberia was studied. The preparation is prepared by polymerization and alkaline saponification of acrylic acid. The reagent is designed to reduce the filtration and stabilization of clay solutions for drilling wells, as well as for sedimentation of suspended particles in sedimentation tanks and water storage facilities. Reagent Uniflok 4 class, produced in the Republic of Uzbekistan. The investigated sample of Unifloc reagent results in an effective reduction of the filtration index, both artificially prepared from a benthic powder solution, and the one that was produced in the well directly when drilling a well in the November region. Acceptable concentrations of Unifloc reagent in clay solutions are in the range of 0.1-0.3 %. With a higher concentration of Unifloc reagent, clay solution thickens. When drilling a well for a conductor in the November region, the Unifloc polymer concentration can be increased to 0.3-0.5%. And to control the filtration properties of the drilling mud when drilling wells under the production column, it is sufficient to adhere to 0.1 % Unifloc. This Unifloc polymer is sensitive to salts of divalent and trivalent ions, so it is suitable for the treatment of fresh solutions alone. It should also be excluded from contact with a cement mortar containing Ca, Mg salts, since clay solution may be destroyed. The new sample of the Unifloc reagent differs from the earlier received reagent batches from Uzbekistan in the November region with higher quality. Thus, the filtration properties of drilling fluids decrease more efficiently with a lower increase in rheological properties.
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