METHOD FOR CONTROLLING WATER INFLUX INTO OIL WELL FROM MULTIBED DEPOSIT Russian patent published in 2004 - IPC

FIELD: oil extractive industry.

SUBSTANCE: method includes control of water level in well product and adjustment of liquid draining values relatively to value of water level. Water level control for product of well is performed by means of constant concurrent measurement of current values of product water level coming in from each productive bed. During control process bed are fixed with water level not matching maximally allowed values for each bed, determined from condition of minimizing of specific costs of watered product extracted from each said bed. Value of extraction from said beds is changed by choking flows up to exclusion of unbalance of current values of water level with allowed value. Product water level control is best performed by means of measuring its electrical conductivity for alternating current.

EFFECT: optimal mode of operation for wells due to selective choking of product flow from each bed performed on basis of differential criteria of their water level.

2 cl, 1 dwg, 1 ex