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Title: Custody Transfer Crude Oil Sampling Systems
Author: Gary Potten
Source: 2016 International School of Hydrocarbon Measurement
Year Published: 2016
Abstract: As sampling applications become more diverse it becomes increasingly challenging to achieve a representative sample for use in fiscal, allocation, and custody transfer. It is therefore important that a sampling systems performance is evaluated on a regular basis so that any limitations are identified to mitigate the risks to measurement accuracy and uncertainty. It is often difficult to conduct water injection certification tests of sampling systems due to the process conditions (varying water cut baseline, high pressure etc.) or the application (lack of space, access etc.). However each step in the chain of uncertainty of sampling should be analysed so that the overall uncertainty is both understood and determined to be within acceptable limits with respect to the transaction risks.

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