How It Works

So … how does it actually work?

GreenLight automatically identifies low- and high-pressure tests in the digital data that it receives once-per-second. It notifies the user each second of the test status using a traffic light system; green for a passing test, red for a failing test and yellow for a test that has yet to be classified. Each portion of a test – low- or high-pressure – is analyzed independently of all others. Passing criteria is generally based on commonly accepted industry standards, although GreenLight is flexible to adapt to any passing criteria required. Typically, low-pressure tests are interpreted based on any time duration (i.e., 5 minutes) of stable pressure between a given pressure range (i.e., 250 – 350 psi). High-pressure tests can also be passed using a strict interpretation of basic guidelines – a pre-determined minimum time duration of stable pressure above the required test pressure – but the real star of the show at high pressures is the predictive algorithm.

The predictive algorithm is based on a proprietary curve that has been empirically determined from a library of past analyses. At its core, the predictive algorithm consists of two steps: 1) fitting the curve to the data and 2) using the fitted curve to determine when 5 minutes of stable pressures would be observed on a circle chart. These two steps are performed once-per-second each time a new pressure data point is measured.

Once the stable pressures are seen to approach a single value, the system has the confidence it needs to report the results of the test; green if that single value is above test pressure and red if that single value is below test pressure. The software uses the same predictive curve regardless of test volume or test fluid.