BLOCKING DISCLOSURE OF HOLE ANNULUS BY MEANS OF PRESSURE SENSOR DURING GAS-LIFT OIL PRODUCTION

摘要

FIELD: oil and gas industry.;SUBSTANCE: proposed invention group relates to gas-lift oil production. Disclosure method if at least external hole annulus of gas-lift oil-well is partially blocked consists of receiving of multitude of delivered in time pressure measurement data in external hole annulus, it is calculated statistical parametre, using multitude of measurement data, and it is received reading about blocking, based on statistical parametre. Detecting system of blocking of external hole annulus contains pressure sensor, functionally connected to external hole annulus of gas-lift oil-well. Pressure sensor is implemented with ability of pressure signal injection in external hole annulus. Furthermore, system contains controller, provided for signal recept and receiving of data multitude of pressure relative to external hole annulus with measurement separation in time. Additionally controller is provided for parametre calculation, indicating blocking of hole annulus on the basis of measurements multitude.;EFFECT: productivity and effectiveness improvement of blocking disclosure of hole annulus.;15 cl, 4 dwg