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2. What has the greatest effect
on the success of a DFIT?
A. Quality of gauge
B. Pump company
C. Rate
D. Volume
E. Length of monitoring period
F. Ability to Capture Data*
*AKA, don’t mess up the test
17. Anytime gauges have a
sustained temperature
below 30*F there’s a chance
of freezing at the wellhead
18. Freezing issues directly impact pressure responses.
Mitigate this possibility by checking the weather and
using wellhead heaters/insulation when possible
28. Rate Variance of
0.95 bbl/min
Pressure Variance of
360 psi
3.5 bbls more than
actually pumped, slight
effect on Permeability
Effects your ISIP,
Closure Pressure, and
Reservoir Pressure
35. Thermal fluid expansion can have
a significant effect on Pressure,
even bottom-hole Pressure
If you expect the possibility of
freezing events, understand that
this effects the entire wellbore,
not just the surface data
46. Had this operator not been
monitoring their data, they
could have wasted WEEKS of
rental time and money
47. 1. Communication is critical
2. Clean up and test equipment
3. Does the procedure conflict with the reality?
4. Consider the weather
5. Is the procedure actually understood?
6. You get what you pay for – Quality is CRITICAL
7. Mitigate physical factors
8. Be aware of concurrent operations
9. Always verify
10. Monitor you test!
Habits That Promote Success