The best candidates are oil or gas wells with the following:
- Liquid loading wells that require frequent swabbing, coiled tubing clean-outs, tubing plungers, pumping units, new or open flow wells.
- Enough differential pressure and volume to lift produced fluid to surface quickly enough to keep up with inflow. (50 psi differential and 3 mcf per barrel of fluid per day)
- Gas rate difference of 100 mcf/day or better from current to best rate.
- A fairly dramatic production decline compared to their projected decline curve.
- Approved for production through casing with the same I.D. throughout its length, no tubing and a full open valve at surface.
- Wells outside these parameters may still be candidates, but must be evaluated on a case by case basis. A swab, shut-in test can be a good way to determine their viability.
- The more accurate the production data, the better chance of accurately qualifying a well as a casing plunger candidate.
