Luban S. Increase in the efficiency of clayless biopolymer drilling muds

The thesis is devoted to the topic of the increase of thermal stability of biopolymer clayless drilling mud systems and the development of technology elaborated in order to control their properties at high temperatures. On the basis of theoretical and experimental studies it was established that the increase of thermal stability limit, securing high rheological characteristics and low filtration loss of biopolymer systems at high formation temperatures is possible due to synergistic interaction of salts and protein substances. The recipe of mineralized biopolymer clayless drilling mud Biocar-MT was developed and utilized in practice. Its mandatory component is organic-mineral Alevron agent that serves both as the heat-resistant regulator of filtration and rheological parameters at bottomhole.