METHOD FOR MONITORING PROCESS PARAMETERS IN STRATUM TUBE TEST Russian patent published in 2016 - IPC E21B49/00 

FIELD: oil industry.

SUBSTANCE: invention relates to investigations of oil wells during pipe testing of productive formations, in particular, to control intensity of formation. Method for monitoring process parameters in stratum tube test involves using weight sensor, flushing fluid flow rate transducers, and gas-air mixture flow sensor, located on drilling site, for process control of stratum test procedure. In this testing method, before starting stratum test procedure, weight sensor is placed in area between chain bloc (or elevator) and upper pipe of testing layout, directly at drilling hook or swivel, and rotor rotation speed sensor is installed on upper pipe of testing layout. According to changes in readings of weight sensor, flushing fluid flow rate transducers, and sensor of gas-air mixture, flow rate of formation fluid supplied to pipe is accounted, control of well shaft tightness is performed, and time of open formation test period is corrected.

EFFECT: technical result is increased information value of investigations during stratum pipe testing, higher labour efficiency of formation testers, ensuring rapid control over test mode, and higher data accuracy concerning hydrodynamic properties of formation.

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