Experimental and field studies of wave technology for bottomhole cleaning and clogging of permeable formations

Abstract

The article presents the results of field experiments and field tests of wave technology for bottomhole cleaning and clogging of permeable formations. Acceleration of well construction time and avoidance of plugging (especially in gas wells) is extremely important nowadays. It is widely acknowledged that rock fractures occur due to the alternating motion of the flushing fluid, and it has significant implications for accelerating drilling processes and maintaining wellbore stability. This can be achieved through the wave motion of the flushing fluid. The experiments were conducted on a specialized installation that simulates downhole conditions, enabling the modeling of downhole processes. We created and tested various designs of wave generators to flush holes of bits with different types and sizes. Experimental evidence suggests that wave technology can aid in bottomhole cleaning and the creation of a colmatation screen. The wave action helps to keep the bottomhole zone and well walls clean, and significantly reduces the penetration of drilling fluid filtrate into the rock. The use of wave technology for bottomhole cleaning and permeable formation ringing shows great potential for oil and gas well construction. The sealing of the borehole space is crucial in the construction of Underground Gas Storage facilities.