Facing Problems while evaluating derivatives?

[petropassion]

Hi,

I am trying to analyse the Pressure Transient well from an onshore well.


Whenever I am trying to Extract dP, the plot is coming out to be very erroneous. Lots of missing points are there in between even though my rate and pressure data are consistent throughout the test period.

This is a 1500m depth onshore vertical well with around 15% porosity.

Can someone who has faced a similar problem help me out here ?

Thanks.

[ivan_aljeburi]

Is it a gas well or a an oil well ?