METHOD OF CONSTRUCTING MAPS OF ISOBARS Russian patent published in 2019 - IPC E21B47/06 E21B49/00 G01V99/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used in constructing isobars maps for developed oil and gas condensate fields. Method involves using results of gas-hydrodynamic analysis (GDA) and field data on all wells, which are stored in database (DB) of information and control system (ICS) of the producing industry. ICS controls means of telemetry systems of gas well clusters wellhead pressure P_w, wellhead temperature T_w, gas flow Q and records them in its DB. Using recorded data, ICS determines downhole P_d.p. and formation pressure P_fp values. To increase accuracy of isobars plotting, before GDA any of wells, ICS sends command to telemetry system to stop control of this well. After that, fishing service personnel conducts GDA of this well. Upon completion of the survey, the fishing service personnel loads into the DB ICS results of GDA wells including and measurement of formation pressure P_f.man. using a downhole pressure gauge. Upon completion of data loading, the system calculates absolute deviation of the last calculated value of formation pressure from actually measured for the given well by mathematical formula and its relative deviation by mathematical formula. Having completed said calculations, ICS instructs telemetry system to control well parameters with preset sampling rate and transmit them to it. Having obtained these data, ICS calculates updated value of formation pressure by mathematical formula and adds them to its DB.

EFFECT: high accuracy of rapid construction of the isobar of the deposit ICS fishing in automatic mode at the request of maintenance personnel.

1 cl