METHOD FOR OPERATIONAL CONTROL OF TECHNICAL STATE OF GAS AND GAS CONDENSATE WELLS Russian patent published in 2017 - IPC E21B47/10 E21B47/06 G06F17/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used in development of gas and gas condensate deposits. Method involves standard gas-dynamic well survey on standard filtration modes with construction of relationship between wellhead parameters (pressure and temperature) and pressure at well bottom from gas flow, monitoring conformity of values of wellhead parameters recorded during operation to value of parameters defined by relationship, constructed according to results of gas-dynamic survey (GDS) at current gas flow rate. Pressure is monitored in annular space of well by means of pressure sensor installed on well and based on readings of which with specified sampling period, using a barometric formula, automated system for process control efficiently models bottom-hole pressure and compares it to value of bottom-hole pressure, defined by relationship, constructed according to results of GDS at current gas flow rate. Rapid modelling of bottom-hole pressure and its dynamics is performed using results of actual measurements of gas flow produced with specified sampling period. Rapid modelling of pressure losses in well shaft is determined from results of actual measurements of bottom-hole pressure, its characteristics and current parameters of produced fluid.

EFFECT: present invention enables to efficiently monitor technical condition of wells, which improves industrial safety during operation.

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