Methods and apparatus for Detecting fractures with significant residual width of previous treatments

摘要

A diagnostic test of refracture candidate consists of a Compressible or incompressible Fluid injected as a Liquid, gas,Or combination at pressures in excess of the minimum tension in place and the Fracture pressure of the formation pressure decline following the test of injection is recorded to detect residual retains a wide Fracture stimulation treatments.Diagnosis involves injections of Small Volume injection time is a small fraction of the time required for the present Flow of Compressible Fluid Reservoir pseudoradial.The portion of a fracture Test of injection can be considered as occurs instantaneously, and the results obtained in an Open Infinite conductivity Fracture Hydraulic pressures on stress Fracture during the closure of the closure portion after d And the Fall of pressure.The Measurement data are transformed into a equivalent Transformation of pressure at Constant speed to obtain pressure adjusted or adjusted pseudovariables are analysed to identify outstanding Unitary dual in periods before and after the closure of rete, confirming a width Ncion residual.