FIELD: oil and gas industry.
SUBSTANCE: method includes measurements of pressure, temperature and flow rate for the fluid at preset operating modes of the well, processing of results and determination of quadratic resistance coefficient. At that influence function and quadratic resistance coefficient are determined by formula (1) or formula (2). Herewith the period for investigations is set, then it is divided into N time intervals which duration depends on the well data; known properties of the influence function are set and an equation is written for each interval: (3) and (4) or (5) and (4). Then influence function and quadratic resistance coefficient are calculated by solving simultaneous equations (3) and (4) or (5) and (4) by linear programming method considering the preset properties of influence function and provided that minimum of linear function F is determined by the formula (6).
EFFECT: improving accuracy in determination of productive data for the well.
3 dwg
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