the application of u043au0430u0440u0431u043eu043au0441u0438u043cu0435u0442u0438u043bu0446u0435u043bu043bu044eu043bu043eu0437u044b in drilling solutions

摘要

the invention relates to a composition for water based drilling fluid containing u043au0430u0440u0431u043eu043au0441u0438u043cu0435u0442u0438u043bu0446u0435u043bu043bu044eu043bu043eu0437u0443 (mpc)the mpc is u0433u0435u043bu0435u043eu0431u0440u0430u0437u043eu0432u0430u043du0438u0435u043c in 25u00b0u0441 after dissolving in conditions of high shear in the 0.3 mas.% aqueous solution of sodium chloride, and the content of the mpc in the water solution of sodium chloride is 1 mas.% for mpc with a degree of polymerization (dp) 4000, 1.5 mac.per cent for mpc with dp 3000 - 4000, 2 mas.% for the mpc with dp 1500 - 3000 and 4 mas.per cent for mpc with dp 1500, and the gel is liquid with the dynamic module of the variance (g) exceeds the loss (g ") in the frequency range of 0.01 to 10 hz.when measured in the u043au043eu043bu0435u0431u0430u0442u0435u043bu044cu043du043eu043c u0440u0435u043eu043cu0435u0442u0440u0435 running by a load of 0.2.