Free step-by-step guides to the everyday work of reservoir and production engineers: what goes in, what you do, what comes out, and where people go wrong.
What you see: The derivative is flat.
What it tells you: The pressure disturbance is moving outward in all directions. The flat level gives permeability-thickness: kh = 70.6 q B μ ÷ level, in oilfield units. This is the most valuable part of the test.
Synthetic example data, made for teaching.
Each guide takes 10 to 20 minutes and ends with a short quiz.
Turn a set of log curves into zones, porosity, water saturation and a net pay number you can defend.
You finish withA zone-by-zone table of net thickness, average porosity and average water saturation, with the cutoffs you used.
Collect the right documents, build casing and completion tables, and produce a schematic that matches what is really in the hole.
You finish withA schematic plus an equipment table, each item with its depth, size, source document and date.
Go from raw gauge data to permeability, skin and boundaries by reading the derivative plot step by step.
You finish withReservoir pressure, permeability-thickness, skin, and any boundaries seen, with the model match shown on the log-log plot.
Each step says what goes in and what comes out, so you can see how the work connects.
An illustration or an interactive plot you can explore, drawn for this site.
The errors that cost new engineers the most time, and how to avoid them.
Check yourself before you open real data. Your results stay in your browser.
Every workflow here can be done in a ReservoirIST tool. Start a free trial, and if you are still studying, check the student discount.
