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

Multi-layer specifics

Action

Mathematics

Comments

1

$\begin{array}{l}q_t\end{array}$ across the pulsing unit (from QZI log)

bottom-hole pressure $\begin{array}{l}p_{wf}\end{array}$

formation pressure $\begin{array}{l}p_e\end{array}$

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

2

Calculate productivity index

(1)	$\begin{array}{l}\displaystyle J = \frac{q_t}{p_e - p_{wf}}\end{array}$

3

Calculate pulsing flowrate history across target formation during PCT

(2)	$\begin{array}{l}\displaystyle q_t(t) = J \cdot (p_e - p_{wf}(t))\end{array}$

Assuming that formation pressure did not change much between PLT and PCT survey

Page tree