What We Need

Well Testing is a Richly Diversified Discipline

Thus it is difficult to summarize the vast array of test types and information or digital data required. Just send us everything and we’ll sort it out! Here’s a typical list:

  • Production test data and reports
    • Digital data in FLD, flowtest, PAS, CSV, or XLS formats
    • Reports in PDF
  • Wireline or surface (AWS) test data and reports
    • Digital data in PAS, FKT, CSV, or XLS formats
    • Reports in PDF
  • Completion reports and wellbore diagram
    • Either digital XLS files or PDF reports
  • Fluid sample analyses or properties
    • Gas, oil, liquid hydrocarbon, and water analyses in PDF
  • Petrophysical properties and geological prognosis
    • Net pay, porosity, and water saturation
    • Depositional environment comments
    • Well logs
  • Deviation survey
    • Either digital XLS or CSV files or PDF reports

Alberta Energy Regulator (Energy Resources Conservation Board)

The Board (ERCB), now the AER, is the oil & gas regulatory body here in Alberta. Legal mandate comes mostly from Directive 65 (commingling) and Directive 40 (welltesting):

Regulations pertinent to well testing are contained in the Oil and Gas Conservation Regulations. Section 11.102 provides the authority to set requirements for well testing within this directive. Sections 11.005 and 11.120 require that all tests be submitted.

We therefore have to keep several things in mind to maintain compliance with the regulations. Please contact Welltest Specialists or the AER help desk to discuss your particular situation. To summarize requirements…

  • All tests must be submitted, even if they were done for in-house purposes
    • Unless distinctly not representative of the reservoir or considered a failure
    • Format tests as digital AER.pas files with accompanying Adobe.pdf reports
    • Upload tests to the Digital Data Submission(DDS) web site
    • Please have your DDS administrator authorize us to “Validate Welltest” and “Submit Welltest” on behalf of your company
    • Our Business Associate (BA) code is A0J0 (A-zero J-zero)
  • Initial Requirements have been established for conventional oil & gas wells
    • Initial Pressure Oil
    • Initial Pressure Gas
    • Initial Deliverability Gas (the AOF)
    • Initial Production Test (Gas)
    • Initial Pressure SD – Commingled (self-declared commingled gas well)
  • Subsurface testing is mandatory for compliance with Initial Pressure Requirements
  • Initial Pressure Oil or Gas Requirements may be subject to the 2 kPa Rule
    • Board computers include some leniency and actually check for ±2.5 kPa/h
    • Extended data (TRG.pas pressure build-up or fall-off tests):
      • Minimum data requirement >6 h on bottom
      • Analytics (PTA) are required if the pressure change is >±2 kPa/h/6 h
      • Direct submission is acceptable if the pressure change is <±2 kPa/h/6 h
    • Static Gradient Survey <14 day shut-in (GRD.pas)
      • Minimum data requirement >2 h on bottom
      • Direct submission is acceptable if the pressure change is <±2 kPa/h/2 h
    • Static Gradient Survey >14 day shut-in (GRD.pas)
      • Direct submission is acceptable
  • Initial Deliverability Gas Requirements may be subject to the 20 e3m3/d/d Rule
    • Transient AOF <20 e3m3/d surface data are acceptable
    • Transient AOF >20 e3m3/d requires subsurface pressures (measured or calculated)
  • Initial Deliverability Gas Requirements may be subject to the 300 e3m3/d Rule
    • Transient AOF >300 e3m3/d requires multi-point test (actual or theoretical)
    • A pressure transient analysis (PTA) is required to generate theoretical AOF
    • Subsurface pressures required for the extended test (build-up of fall-off)
  • Initial Production Test Requirements may be waived
    • If Initial Deliverability Gas (the AOF) was flagged “in-line”
    • If no production test (PRD.pas) was in fact conducted (i.e. clean-up to pipeline)
    • Minimum 15 days in-line production history required, 30 days is preferred
  • Initial Pressure SD – Commingled Requirement will not be waived
    • Under any circumstances
    • Pressure is expected to represent all zones commingled together
    • Compliant tests on all zones separately can be accepted via application
  • Annual Pressure Requirements have also been established for some pools
    • Annual also refers to bi-annual, etc…
    • Must test 25 % of pool wells
    • Surface and acoustic well sounder (AWS) testing is acceptable
    • 2 kPa Rules apply
  • Subsurface pressure tests acceptable for Initial Pressure Requirements include…
    • Conventional Flow & Build-up or Swab & Build-up tests
    • Perforation Inflow Diagnostic (PID) tests
    • Mini-frac’ fall-off tests (G-function)
    • Formation leak-off (fall-off) tests
    • Extended shut-in tests (i.e. before running rods and pump)