POLYMER DRILLING FLUID WITH CONTROLLABLE VISCOSITY

摘要

Acrylic drilling fluid with controllable viscosity based on water, which is formed by water or water clay suspension or water solution of alcohol or salt water. The aim is to achieve optimal viscosity of the drilling fluid in a wide range of pH values and with a low polymer consumption. This is achieved by the fact that for every 100 parts by weight of the water base, the acrylic drilling fluid contains 0.02 to 12 parts by weight of copolymer of ethyl acrylate and methacrylic acid with the molecular ratio 8.5:5 and molecular height of 10<6> to 10<7> and 0.001 to 3 parts by weight of the regulating solubilizing agent which consists of sodium and potassium hydroxide or ammonium hydroxide and hydroxyalkylamine, while the ratio of hydroxides to hydroxyalkylamine is 1:1 to 1:3. The solution can be used for boring on basic geological materials.