Q&A: Job well test with completion
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Inter-layer connectivity from well test
BydtippingA possible tip to establish inter-layer reservoir connectivity. It utilises the kh obtained from the derivative plot of the BU: The horizontal portion of the derivative plot represents infinite-acting-radial-flow and gives kh of the volume of reservoir detected by the pressure transient. >Now, suppose after this build-up (BU), an additional wellbore interval is open…
Wellbore storage
The wellbore storage effect is defined immediately after a production start-up or shut-in, when the pressure behaviour at early times is dominated by the compressibility and volume of the wellbore fluid. At the start of a flow period, production at surface is due to the expansion of the fluid in the wellbore, and not the...