Single-Screw Hydraulic Machines in the Oil and Gas Industry: Fields of Application and Development Prospects

Next year, the scientific and technical community will celebrate the 90th anniversary of the invention by the prominent French engineer Rene Moineau of the principle of capsulism, which gave rise to the foundations of a new type of volumetric hydraulic machines, which are now widely used in various industries, including in the oil and gas complex. This article discusses the history of the emergence and development of single-screw hydraulic machines (pumps and hydraulic motors), the structural and kinematic features of their working bodies, characteristics and advantages over other types of volumetric and dynamic machines. The main applications of single-screw hydraulic machines in the oil and gas industry for well drilling and mechanized production are presented. The prospects of this type of equipment in innovative technological projects and ways to improve their designs are noted.