道达尔勘探开发 规范 GS_EP_INS_112_EN.pdf

Exploration Production GENERAL SPECIFICATION INSTRUMENTATION GS EP INS 112 Design and supply of gas custody transfer metering units 04 10/2009 Revised as per marking 03 10/2008 Revised as per marking 02 10/2007 Revised as per marking 01 10/2005 Addition of “EP” root to GS identification 00 10/2003 First issue Rev. Date Notes This document is the property of Total. It must not be stored, reproduced or disclosed to others without written authorisation from the Company. Exploration Production General Specification Date: 10/2009 GS EP INS 112 Rev: 04 Contents 1. Scope 4 2. Reference documents 4 3. Generalities5 3.1 Standards 5 3.2 Units6 4. Measurements 6 4.1 Flow measurement principle6 4.2 Uncertainty6 4.3 Equipment7 5. Design of the unit 7 5.1 Lay out7 5.2 Capacity7 5.3 Geometry7 5.4 Tightness 8 5.5 By pass8 5.6 Measurement verification8 5.7 Meter runs8 5.8 Gas properties 10 5.9 Miscellaneous11 6. Safety 11 7. Data processing and verifications 11 7.1 Consistency of measurement 11 7.2 Calculations and verifications 12 7.3 Inputs12 7.4 Time cycle of the fl