Might be worth considering to satisfy #AER Initial Pressure requirements for oil and gas (#LNG) wells. Underbalanced conditions result in fluid inflow causing a Closed Chamber pressure build-up (similar to a Drill Stem Test, DST). Overbalanced wells react by
Include perforation Inflow diagnostics (PID) and Fracture Fall-off or Formation Leak-off technologies. Impulse and Closed Chamber (DST) theory combine to offer simple, economic analytical (#PTA) options for satisfying #AER initial compliance regulations for both oil and gas (#LNG) wells.
Unconventional #welltest programs include perforation Inflow diagnostic tests (PID), Formation Leak-off tests and Fracture Fall-off tests (FLO), and Mini-Frac’ or Diagnostic Fracture Injection Tests (#DFIT). These simplified methods are now in common usage providing economical alternatives for compliance with
Re: AER Directive 40 (aka Guide 40) Initial Pressures… Traditionally new oil and gas (#LNG) wells were cleaned up before a single point flow and build-up #welltest was performed. This method is still valid, with pressure transient analysis (#PTA)
D40: #AER Directive 40 (aka Guide 40) Initial Pressures… With a minimum eight hours (8 h) of subsurface #welltest pressure data, it doesn’t matter whether-or-not the test meets the 2 kPa Rule, if the data are analyzable. Pressure Transient
D40: #AER Directive 40 (aka Guide 40) Initial Pressures… What’s not specifically clear in D40 is that Pressure Transient Analysis (#PTA) is an acceptable #welltest protocol for estimating a p* for Initial Pressure Oil and Initial Pressure Gas (#LNG)
Allows for an Initial or Annual #welltest to be submitted without analysis (#PTA). Conventional static gradient surveys, with a 10–15 minute on-bottom stop, are acceptable. Sometimes the extended gauge won’t pass the 2 kPa Rule, but the gradient will,
For shut-in durations <14 days allows for an Initial or Annual #welltest to be submitted without analysis (#PTA). Extended wireline, surface box, and acoustic well sounder (AWS) tests are submitted in the TRG.pas (transient gauge) format. If the intent