FIELD: measurement technology.
SUBSTANCE: invention relates to system and method for measuring pressure in annular space of well shaft. System comprises one or more gas-filled tubular elements extending from the surface into the annular space down to the level of the shoe of the casing string, wherein annular space of the wellbore is configured to transport a combination of water and gas to the well, wherein a first location in which combined water and gas is pumped into the well, determines the pumping point, and the second location, in which the gas-filled tubular elements terminate downhole in the well, determines the other point, wherein the pumping point is located lower in the well than the other point.
EFFECT: technical result is possibility of monitoring pressure in annular space during introduction of medium or before it, so that it becomes possible to exclude pressure excess of safe level.
12 cl, 2 dwg
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