Wireline (Slickline) is one method of running various measuring instruments and tools into petroleum wellbores. Basically, subsurface devices are attached to the end of a long spool of wire, instruments are then lowered down hole and winched back up.
An Isochronal #welltest in gas wells (#LNG) can be analyzed for Laminar-Inertial-Turbulent (LIT) effects. Transient #AOF magnitude and turbulence factors will be especially relevant if there are sour gasses and #AER blowout notification/evacuation plans. Drawdown magnitude (%) should be
For the original 4-Point Isochronal #welltest theory in gas wells (#LNG), incremental flow and shut-in pressures needed to reach stabilization. Sequences
In gas wells (#LNG) involve sequences of alternating flow and shut-in periods. Inflow rates are incremented for each point. In Alberta the #AER requires an isochronal test when the transient AOF >300 e3m3/d, mainly for sour gas blowout considerations.
We check the #AER Initial Outstanding List every week (due diligence). It’s surprising how many times #welltests which we have analyzed (#PTA) and submitted (for regulatory compliance) pop up. It’s often because the GCI doesn’t match the measured depth
In high deliverability gas (#LNG) wells help to quantify turbulence factors for rate-dependent skin and tubing performance evaluations. An isochronal #welltest can even illuminate blocked, crimped, or parted tubing issues. In Alberta, #AER regulations stipulate that all gas wells
Formation Leak-off Tests are a simple, effective, economical #welltest strategy for #AER Initial Pressure compliance in oil and gas (#LNG) wells. After landing a horizontal multi-stage frac’ string, run recorders, open (burst) the toe hydro-port, and monitor the pressure
Mini-Frac’ or DFIT (Diagnostic Fracture Injection Test) is another #welltest alternative that might be worth considering to satisfy #AER Initial oil and gas (#LNG) well test requirements. In horizontal wellbores mini-frac’s can be successful if conducted through the toe