METHOD OF ESTIMATION OF OIL WELL OPERATION IMPLEMENTING TECHNOLOGY OF FORMATION HYDRAULIC BREAKDOWN Russian patent published in 2010 - IPC E21B43/267 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil production implementing technology of formation hydraulic breakdown. The method of estimating operation of production well implementing technology of formation hydraulic breakdown consists in pumping a composition into at least two ruptures of hydraulic breakdown or in two zones of the rupture of hydraulic breakdown; together with proplant indicator there are pumped particles of slag different for each rupture of hydraulic breakdown or for zone of rupture of hydraulic breakdown chosen from group: copper containing, lead containing, zinc containing, and iron containing. Further, the method consists in pumping out oil-water mixture from the said well, in separating solid phase from fluid one, in dividing solid phase by specific density to fractions, in extracting particles of slag, washing particles of slag off oil, crumbling, treatment with acid, by means of ion selecting electrodes analysing acid extract for contents of ions of copper, lead, iron, and zinc; in estimating productivity of various regions of formation in the well and in determining the rupture of hydraulic break or zones of the rupture of hydraulic break which lift proplant.

EFFECT: upgraded accuracy of control of oil flow in formation and of well yield; determining place of proplant lifting at multi-level hydraulic break.