METHOD FOR CHARACTERISING PARAMETERS OF WELLS, WELL BOTTOM ZONE AND FORMATION, AND DEVICE FOR CARRYING OUT SAID METHOD

摘要

The invention relates to the oil industry and can be used for testing the intake capacity of a well and perform an action on a bottom zone thereof. Sa id invention makes it possible to increase the number of measured parameters an d improve the accuracy of characterisation of the well, the well bottom zone a nd a formation. The inventive method consists in performing a pulse nonstationa ry injection of a reagent and measuring the injection pressure and the reagent flow on the measuring section of an injection line before the wellhead. A cumulative consumption of work supplied for nonstationary flow of the reagen t consumption unit in the well bottom zone is defined. Skin-effect factor is calculated taking into consideration the current conductivity of the formation. The injection mode is modified when required filtration propertie s of the bottom well zone determined according to the skin-effect are obtained .