Time to plan for our #AER Annual Pressure Requirements. Surface pressure recorders are fine for an annual #welltest — the caveat for gas (#LNG) wells being that there cannot be a liquid level above the top perforation. Measuring the flowing, pumping, or injecting pressure before shut-in is critical for #PTA. Typical shut-in times are 48 – 196 h, depending on matrix permeability (k). Shut-in times do not have to comply with the 2 kPa/h or >14 Day Rules if PTA is used to extrapolate p*. Testing water, gas, or miscible flood injection wells avoids shutting in your revenue generating producing wells. What’s not specifically clear in D40 is that PTA (p*) is an acceptable method for estimating Annual Pressure Oil and Annual Pressure Gas conditions. Non-producing shut-in, suspended, and observation wells are an economic choice to satisfy annual requirements, with either single-shot acoustic well sounder (AWS) tests or static gradient surveys.