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Action
1Synchronize BHP gauges
2Stack BHP data with wavelet filter
3De-tidal the BHP
4Calculate total sandface flowrate (see also below)
5Correct the flowrates
6Create multi-well history plot
7Analyze data and trim the irrelevant data
8Decompose DTR/CTR
9Assess apparent transmissibility / diffusivity
10Perform numerical tests and compare with PCT DTR/CTR



Multi-layer specifics





ActionMathematicsComments
1

Assess total sandface flowrate:

q_t across the pulsing unit (from QZI log)

bottom-hole pressure p_{wf}

formation pressure p_e


Assuming that recent PLT is available, both flowing and shut-in survey
2

Calculate productivity index

(1) J = \frac{q_t}{p_e - p_{wf}}

3Calculate pulsing flowrate history across target formation during PCT
(2) q_t(t) = J \cdot (p_e - p_{wf}(t))
Assuming that formation pressure did not change much between PLT and PCT survey



See Also


Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well testing / PCT

Well & Reservoir Surveillance ]

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