METHOD OF ON-LINE MONITORING OF WATER AND SAND CARRY-OVER WITH EXTRACTED PRODUCT FROM WELL IN APCS OF GAS-FIELD SITES OF OIL AND GAS CONDENSATE DEPOSITS OF FAR NORTH Russian patent published in 2013 - IPC E21B47/10 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to on-line monitoring of water and sand carry-over from a well in automated process control systems (APCS) of oil and gas condensate deposits of the Far North. The above method involves measurement of gas pressure at the well head using APCS means and telemetry in real-time mode. At the same time, gas temperature is monitored on the well head. In parallel with the above real-time measurements, monitoring of actual gas pressure and temperature is performed at the end of gas line, via which gas is supplied to the inlet of complex gas treatment plant, and the well gas flow rate is monitored as well. Using current values of monitored parameters, design gas pressure value at the pipeline end is calculated in real-time mode using APCS means. Then, behaviour of its variation in time is compared to behaviour of variation of actual gas pressure at the end of gas line, and as per the comparison results, the beginning of sand and water carry-over process and the necessity of monitoring its operating mode is estimated. The beginning of sand and water carry-over process from the well is determined as per difference in behaviour of design and actual pressures.

EFFECT: improvement of accuracy of processes of oil and gas condensate fields.

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