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Title: Production Measurement Management
Author: Lex Scheers, Chris Wolff
Source: 2002 North Sea Flow Measurement Workshop
Year Published: 2002
Abstract: The production measurement process is more than just measurement hardware in the field but is the entire chain from data collection in the field up to the final production reporting. It includes all intermediate steps such as measurement and sampling guidelines, operational procedures, data processing (pVT), data transmission and reconciliation/allocation procedures. The customers of this measurement process are generally spread over several disciplines in the oil and gas companies and their partners or government bodies. Each of these customers has their own requirements regarding the measurement process. Production measurements have a vital economic impact on the business it not only costs money, but also delivers data that is used in decision-making processes such as production optimisation or reservoir modelling and in measuring the economic returns. Economics then not only set the uncertainty requirements for the production measurement process but often also indicate the most critical measurements. This could be oil flow rate, gas flow rate, watercut, GOR, gas volume fraction or even water flow rate in water-constrained facilities. As every field development has its own specific requirements for the production measurement process it will be demonstrated that a design phase and operations phase should be established. In the design phase the requirements from the customers are investigated and then compiled into a measurement philosophy and subsequently this results in detailed design and description of the system. Once production has started the measurement process should be managed through proper custodianship. The latter should be transparent and auditable and some organisational issues will be further discussed. In addition, with the more advanced measurement technology being installed in the field, such as multi-phase flow meters or modelling techniques, it becomes clear that proper management of this technology is essential in order to meet the customers expectations.

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