method and device for controlling bottom hole pressure in the underground reservoir during the operation of drilling pump

摘要

is way to maintain pressure in the borehole during drilling.method includes the steps of applying the liquid from the reservoir to u0431u0443u0440u0438u043bu044cu043du043eu0439 column.the circulation of fluid in the space between the u0431u0443u0440u0438u043bu044cu043du043eu0439 pie u0431u0443u0440u0438u043bu044cu043du043eu0439 column column and a well isolation pressure u043au043eu043bu044cu0446u0435u0432u043eu043c u043fu0440u043eu0441u0442u0440 u0430u043du0441u0442u0432u0435,measuring the pressure in the u043au043eu043bu044cu0446u0435u0432u043eu043c space, calculate the value of back pressure of the back pressure to the circular space on the basis of the value of back pressure.the deviations from the circular space to the fluid domain u0448u0442u0443u0446u0435u0440u0443, controlled release fluid under pressure from the circular space.solid particles from liquid and the directions of fluid back to the reservoir.the disclosed installation for maintaining the pressure in the well bore during drilling.which includes adjustable union for controlled release of fluid under pressure from the circular space of the borehole.back pressure back pressure pump for attachment u0432u044bu0447u0438u0441u043bu0435u043du043du043eu0433u043e with preset value and a processor to control a pump u043fu0440u043eu0442u0438u0432u043eu0434u0430u0432u043bu0435 and adjustable nia.