Perforation Inflow Diagnostic Tests

Perforation Inflow Diagnostic (PID) tests satisfy ERCB Initial Pressure requirements. These simplified tests, now in common usage, provide an economical alternative to traditional methods. Basically the well is perforated under-balanced, and the subsequent closed chamber pressure build-up is monitored with subsurface pressure recorders. Data are then analyzed using impulse or closed-chamber theory (PITA) to generate a p*. What’s not specifically clear in G40 is that Pressure Transient Analysis (PTA) is acceptable for estimating Initial...

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Through the Move – Breathing Easier

We are coming out the other side of closing our office and moving home. Most technical issues have been resolved – but the server is still for sale (cheap!). Now that we have time to breath I can start uploading more content and iReports to the web site – and add some blog posts. I’ve been busy with various LinkedIn groups, so will take a few cues from there as to what to discuss. For now I’ve thrown up a TechTip on the ERCB’s 2 kPa Rule. From the comments I receive it seems people think that a test must comply...

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Perforation Inflow Diagnostic Tests

Perforation Inflow Diagnostic (PID) Tests are an excellent, and cost effective, method for obtaining a quality estimation of initial reservoir pressure conditions. As the name implies, these tests are conducted during or immediately after perforating – so reservoir pressure transients are limited. Subsequent completion, stimulation, clean-up, and testing operations often seriously affect our ability to acquire quality pressure build-up data for analysis. Using subsurface pressure recorders will also satisfy ERCB Initial Pressure Gas (IP...

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Welcome to Welltest Specialists’ Blog!

Finally – a blog on Welltesting! It’s taken a while to get this together. Mostly because I’ve been too busy and needed someone to help get the new WordPress based web site designed and loaded. Now that it’s up I should be able to manage… And blog! Now, let’s see, what about topical topics? Mini-frac’ (DFIT) tests and G-function analyses. Formation leak-off tests and PITAnalysis for Initial Pressure Oil requirements. ERCB 2 kPa Rule and how it doesn’t apply if conducting analysis. Perforation...

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