PROCEDURE DETERMINING CHARACTERISTICS OF WELL, FACE ZONE AND POOL AND DEVICE FOR ITS REALIZATION Russian patent published in 2002 - IPC

FIELD: oil industry, tests of wells for intake, conducting technological action on face zone of well. SUBSTANCE: measurement section with length enabling pressure difference during flow of liquid media with minimal hydraulic resistance to be fixed is organized in the form of calibrated pipe in pressure line ahead of well-head. Flow transducer, pressure pickup and additional differential manometer with pulse tubes joined to start and finish of measurement section are mounted on calibrated pipe. Pulse non-stationary pumping of reagent is conducted. Pumping pressure and flow rate of reagent are measured at wellhead. Given data of measurement are re-calculated to face zone conditions. Collected flow rate and work consumed for non-stationary flow in face zone of pool per unit of flow rate of reagent are determined. Coefficient of skin effect is computed by these indices with due account of present conductance of pool. Value found by results of short-time pulse non-stationary test of given well for intake by stratal fluid is used in the capacity of present conductance. Conditions of reagent pumping are changed when required filtration properties of face zone of pool found by computed skin effect are achieved. Then hydraulic conductance, piezoconductance, radius of face zone and coefficient of skin effect are determined per each measurement under conditions of pulse non-stationary pumping of stratal liquid in the course of each pumping condition. EFFECT: increased number of measured parameters and raised accuracy of determination of characteristics of well, face zone and pool. 5 cl, 7 dwg, 1 tbl