Working with Swinton Technology for the past 1 year and responsible for overall Middle East Business

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3 P MURALIDHARAN General Manager Swinton Technology Middle East Working with Swinton Technology for the past 1 year and responsible for overall Middle East Business Total 34 years experience in Process Control Industry of which 22 years experience in Middle East, handling Custody Transfer Flow Products (Orifice, Turbine, PD, Ultrasonic, Coriolis), Flow Computers & Metering Systems Bachelor of Technology in Electronics Engg

4 Orifice Meter Diagnostics ConocoPhillips Field Tests P Muralidharan General Manager Swinton Technology Middle East (Richard Steven, DP Diagnostics LLC)

5 Agenda Introduction Field Tests-Conoco Phillips Conclusions Questions and Answers

6 Introduction Orifice flow meters are popular as they are simple, generally inexpensive & reliable Current practice of accuracy validation is by routine scheduled inspections A diagnostic system (CBM) is desirable as it: Guarantees performance therefore reducing exposure to measurement error Avoids risky routine inspection Provides Alerts & identifies problems

7 Traditional Meter DP (P1-P2) DP Diagnostic Method DPt H L flow P1 P2 3 of 40

8 Traditional Meter DP (P1-P2) DPt DP Diagnostic Method DPr Recovered DP (P3-P2) H L H L flow P1 P2 P3 3 of 40

9 Traditional Meter DP (P1-P2) DPt Recovered DP (P3-P2) DPr H L H L H L Permanent Pressure Loss DP (P1-P3) DPppl flow P1 P2 P3 3 of 40

10 Simple visualisation Four pairs of normalised diagnostic results plotted as 4 points inside a Normalised Diagnostic Box (NDB). All points inside the box indicates good meter performance (each result is within allowable uncertainty). 10

11 Simple visualisation Any point outside of the box means that actual meter performance is not agreeing with expected and there is potentially a non-compliance or a fault producing an error in meter flow rate prediction. Pattern of diagnostic results provides indication of cause of alarm. 11

12 Issues Detected Include: Incorrect Inlet or Throat Diameter In Use Two-Phase Flow Excessive Upstream Disturbance Contamination Build-Up Blocked Impulse Lines Saturated DP Transmitter Drifting DP Transmitter A Buckled Orifice Plate An Orifice Plate Installed Backwards A Worn or Damage Orifice Leading Edge Incorrectly Spanned DP Transmitter. Orifice Blockage Meter Incorrectly Installed 12

13 Agenda Introduction Field Tests-Conoco Phillips Conclusions Questions and Answers

14 ConocoPhillips Field Tests ConocoPhillips (CoP) has field tested Prognosis on a live 10 orifice meter at the Franklin gas station in Texas, USA CoP deliberately induced known controlled problems to test and verify the diagnostic system. The response of Prognosis to the correctly operating orifice meter is shown before the response of Prognosis to the various induced problems are presented.

15 ConocoPhillips Field Tests Baseline (10, 0.46 beta, dry gas orifice)

16 Backwards installed plate Measurement error of between -15% and -20%!!

17 Leaking 5-way manifold (DP reading error) Actual DP inh20 DPt drifts -5.4%, DPt read inh20 Flow Error -2.7%

18 Blocked impulse line (upstream) Pressure at P1 is stuck, 2 DPs are affected and hence all results are affected. No doubt that there exists a DP integrity issue!!

19 Incorrect Orifice Diameter Keypad Entry Actual d = 4.5 Keypad entered d = % bias in flow rate prediction

20 Incorrect inlet diameter keypad entry Actual ID = 9.75 (schedule 80) Keypad entered ID = (wrong schedule) <+1% bias in flow rate prediction

21 Agenda Introduction Field Tests-Conoco Phillips Conclusions Questions and Answers

22 Conclusions Swinton Technology & DP Diagnostics have developed and proven an Orifice Meter diagnostic tool called Prognosis Prognosis can Assure correct Orifice Meter Operation Reduce exposure to mis-measurements Increase productivity of field technicians by reducing inspection visits

23 Conclusions Prognosis has been field tested at BP CATS, CoP TGT and Franklyn Rosneft Polar Lights Field ( Russia) Prognosis is procured by BP, Conoco Phillips, Petronas, Yanpet ( Exxon/Saudi Aramco), MaerskOil, Encana, UK National Grid Talisman Concept is now included in UK governments DECC Guidelines for Petroleum Measurement The Canadian regulators Directive 17 QP Measurement Guidelines

24 Thank You. Questions?