DACON INSPECTION SERVICES I PIPESURVEY INTERNATIONAL MFL INSPECTION OF PIPELINES

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Emil Marshall
5 years ago
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1 I PIPESURVEY INTERNATIONAL MFL INSPECTION OF PIPELINES

2 DACON AND INLINE INSPECTION Dacon well-known for UT based inline inspection UT tools provide unrivaled inspection accuracy. Wide variety of pipelines ( size, service, access, length, possibility to shut down) UT pigging not always the best solution Dacon wants to be full solution provider Via partnership Dacon now provides MFL inline inspection

coils Can be used without couplant Suitable for very long pipelines

3 MFL PIGGING MFL Pigging Works on the principle of magnetic flux leakage at defect locations which can be picked up by hall sensors and coils Can be used without couplant Suitable for very long pipelines More suitable for screening as accuracy is low compared to UT intelligent pigging

4 The MFL Tool An MFL Tool is an autonomous inspection tool with on-board: computer, sensors, Batteries and odometers.

5 The MFL Tool

6 MFL Tool principle A defect will generate a variation in magnetic flux, which is related to size and depth of the defect The variation in flux will be picked up by the hall senssors/coils and translated into an electronic signal

7 MFL Tool principle Location of magnets and coils on an actual tool. Pipe wall

8 MFL Application range MFL Inspection can be used for: Oil-gas and water pipelines Carbon steel pipelines Wall thickness range depending on pipe size from 5 up to 25 mm Pressure up to 230 bar Temperature from -5 up to 80 C Length up to 500 km

9 Our MFL Tool 25% diameter reduction Bi-directional design Low friction (wheels) Tri-axial Hall sensors Integrated ID/OD Extra High Resolution Current range 6 48 Short Radius Bends Multi diameter Low Flow pipelines (< 0.5 m/s) High Flow pipelines (> 4.0 m/s)

10 Data presentation C-scan Side View Top view Internal view

11 MFL Analysis and Reporting Types of corrosion: General corrosion, Pitting, Pinholes, Slotting and Cracks* Accuracy: 10% WT Distance and Clock Position Internal and External corrosion

12 Each pixel represents a defect! Data presentation easily showing the distribution of defects along your pipe line

13 Results and Field Verification

14 Case Study: Bidirectional pigging Case History : Tank Farm Lines 30 Pipelines Crude oil 1.5D Radius bends Bidirectional MFL Tool Temporary pig traps and pump spread

15 Case study: High Flow Regime Case History : 28 X 250 km Sub sea gas pipeline Gas Velocity: Flow 5 ~ 9 m/s Tool Velocity: 3 ~ 4 m/s

16 Case study: Multi-diameter pigging Case History : 32 X 24 X 173 km High pressure gas pipeline

17 Case study: Low Flow Regime Case History : 84 km X 20 Oil pipeline Max pressure m/s Net Run time 27 days!

18 MFL vs UT Magnetic Flux Leakage Error up to 20% of nominal wall thickness, no absolute wall thickness measurements More suitable for screening Complex and lengthy data analysis Large tool, sometimes crane required for handling Ultrasonic Testing Absolute wall thickness measurements, accuracy mm Detailed and accurate inspection results Instant results with easy to interpret data Small portable tool Allows for launching without launcher Un-piggable pipelines Can be used in all media, no couplant required For very long pipelines Only on carbon steel Need liquid filled pipe, water or clean product. Length up to 50 km On all type dense materials, including plastics and HDPE

19 MFL Pigging Demonstration Rayong Thailand Preparing the Line, pumps and MFL pig

20 MFL Demonstration Rayong Thailand Launching the pig

21 MFL Demonstration Rayong Thailand Pumping receiving and Data download.

22 MFL Demonstration Rayong Thailand Results Overview

23 MFL Demonstration Rayong Thailand Results Section A Defect 2 Defect 1

24 MFL Demonstration Rayong Thailand Results, Section B Defect 9 Defect 1 Confirmation internal

25 MFL Demonstration Rayong Thailand Results Elbow and section C Elbow Thin section Defect 2

26 MFL Demonstration Rayong Thailand Results Section D Defects No confirmation

27 MFL Demonstration Rayong Thailand Results Bend section Bend section, Data coverage on external radius

28 MFL Demonstration Rayong Thailand Results Section F Big internal defects with confirmation

29 MFL Demonstration Rayong Thailand Show Actual data

30 How Can We Help? Contact Tim Shaw Chief Marketing Officer info@dacon-inspection.com Mobile Phone : +66 (0)

DACON INSEPECTION SERVICES CORROSION UNDER SUPPORT

DACON INSEPECTION SERVICES CORROSION UNDER SUPPORT Who we are Conventional and Advanced NDT and Inspection Services Oil and Gas, Refinery, Petrochemical, Heavy Industry, Mining Over 400 personnel including