Perforation, Fracture Fall-off, & Formation Leak-off Tests

Perforation, fracture fall-off, and formation leak-off tests satisfy ERCB Initial Pressure requirements. These simplified tests, now in common usage, provide an economical alternative to traditional methods. There are several different scenarios, depending on your completion operation logistics. One method is basically over-balanced perforating and monitoring the subsequent pressure fall-off feed into the reservoir. Another is to land a horizontal multi-stage frac’ string, open the toe hydro-port, and monitor the pressure fall-off feed into...

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Diagnostic Fracture Injection Testing (DFIT)

Characterizing Reservoir Properties using Diagnostic Fracture Injection Testing (DFIT) was presented at a recent Society of Petroleum Engineers (SPE) luncheon. A great talk – and a great reservoir diagnostic test – as our example Level 2 eREPORT illustrates: DFIT2 Mini-frac’ Fall-off. But…here in Alberta…as per ERCB Bulletin 2010-38 surface (or acoustic well sounder) data are no longer acceptable for Initial Pressure Gas or Initial Pressure Oil requirements. For compliance with Initial Pressure requirements the...

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