All the down hole tool functions are monitored from the surface:
With all these gauges, you get a better understanding of the test dynamics. You get more pieces to the puzzle.
We have done many studies and have published papers on the need.
After the test is over we can log the density of the fluid recovery inside the pipe. We can identify oil, water, mud, and gassy oil, etc. Using our dump bailer we can take a sample of the fluid and bring to surface before reversing the string.
We have done up to 5 DST's on one trip.
There is no rotating or up and down movement of the drill string, other than depth adjustment if required after correlating.
With our internet site you can view all the data during the test. Every gauge is available and you can use the chat window to ask questions or change test times with our test Engineer or our reservoir specialist.
We have proprietary software developed by Lloyd Alexander, 'The father of Closed Chamber testing'. Our reservoir specialist has worked with Lloyd and has over 20 years test analysis experience both for DST, Production Tests, reservoir calculations and regulatory compliance.
This software was developed for production testing at surface. Rather than waiting weeks for a well to build up Lloyd found a solution to reduce the well bore storage effects. When used with our system we eliminate the volume in the production tubing to surface and our minimum interval of just 20.5 ft. further reduces the well bore storage effects.
Even in tight shale we can determine micro Darcy permeability.