Riser & Flowline Intervention Using New Composite Coil Tubing Technology

Transcription

1 Riser & Flowline Intervention Using New Composite Coil Tubing Technology Donald Ballantyne Commercial Director Paradigm Flow Services Ltd

2 Two Binders, crew of two on each MAN COUNT: 4

3 Four following each binder making sheeves into Stooks MAN COUNT: 12

4 2 Tractors transporting stooks to farm, crew of 3 each MAN COUNT: 18

5 2 men building each stack, two crews MAN COUNT: 22

6 1 man with one of these MAN COUNT: 1

7 and one of these MAN COUNT: 1

8 DSV Around 120 People

9 PRESENTATION SUMMARY Paradigm Flow Services specialise in the supply of innovative technical solutions to solve issues with blockages or restrictions to process or utility flow. We have successfully deployed our services at a number of international locations. To date our services have been used in upstream offshore O&G, but are now involved in midstream. Development of our own patented technology has underpinned our success and market position. We will continue to develop and improve our technology. Flexi Coil is miniature coil tubing that has been specifically design for live intervention to risers, flowlines & pipelines. The presentation uses a case study to demonstrate the application and unique ability of the technology.

10 FLEXI-COIL Sand removal from FPSO riser West Africa

11 ESTIMATED COST SAVINGS A West African O&G company operates a deepwater >500m FPSO in the Gulf of Guinea. A subsea tie back oilwell was a known sand producer. An increase in production was achieved, followed by a complete loss of surface pressure and zero flow. IT was suspected that a blockage due to sand accumulation was the root cause. The initial proposals to locate and clear the blockage were at least 5x more expensive than Flexi-Coil solution deployed, but never fully costed due to: 1. Cost escalation. 2. The need to shutdown FPSO with a loss of 35,000 barrels per day for a a number of weeks possibly months 3. The finding of Flexi-Coil as a potential solution.

12 EXAMPLE OF EXISTING TECHNOLOGY COIL TUBING FOR FPSO DEPLOYMENT

13 STANDARD COIL SPREAD Standard coil tubing is used extensively in the downhole and well intervention market. It uses steel coil and is designed for deep vertical depth and pressures. Steel coil reel >12T load Coil run and gooseneck Coil Injector & Pressure Control

14 PREVIOUS FPSO COIL TUBING FPSO P43

15 W. AFRICA FPSO SAND PLUGGED RISER

16 EXTEND OF BLOCKAGE IN RISER 20.0 Distance from Vessel (m) Depth of Riser (m) m 250m 300m 350m 400m 450m m 550m 600m 650m 700m 750m SEA BED 549m

17 REMOTE PRESSURE CONTROL WITH FLEXIBLE LUBRICATOR CRANE AND LAYDOWN RISER

18 FLEXI-COIL EQUIPMENT

19 FLEXI-COIL EQUIPMENT

20 FLEXI-COIL EQUIPMENT

21 CONNECTION TO RISER

22 FPSO DECK

23 FLEXI-COIL 20.0 Distance from Vessel (m) Depth of Riser (m) m 250m 300m 350m [video removed for pdf] m 450m m 550m 600m 650m 700m 750m

24 8M 3 OF SAND REMOVED

25 8M 3 OF SAND REMOVED

26 SAND REMOVAL

27 SUCCESS!

28 LESSONS LEARNED The power of Capstan Friction Its all about the pipe

29 THE POWER OF CAPSTAN FRICTION

30 WHERE DO WE GET CAPSTAN FRICTION?

31 THE PROBLEM WITH CAPSTAN FRICTION Pull Force Co-efficient of Friction X Angle = Hanging Tension x e For steel pipe 1km into pipeline in North Sea Pull force = 49,000kg 150m For composite pipe 1km into pipeline in North Sea Pull force = 2570kg 1000m

32 ABRASIVE WEAR DUE TO STEEL COIL

33 HIGH FRICTION

34 LOWER FRICTION

35 BEND STIFFNESS TOO LOW (COMPRESSIVE FAILURE)

36 TOO FLEXIBLE (COMPRESSIVE FAILURE)

37 TOO HEAVY (TENSILE FAILURE)

38 KEY LESSONS LEARNT SELECTION OF THE RIGHT COIL FOR THE PROJECT Too Stiff & Heavy Too Heavy & Low Tensile strength Too Flexible Very Nice Getting There! Just Right! 4-6kg/m 2.1kg/m 0.6kg/m

39 REVOLUTION MOTOR

40 REVOLUTION MOTOR

41 THE REVOLUTION MOTOR

42 REMOVING SAND, WAX AND ASPHALTENE

43 FLOWLINE DE-COMMISSIONING UKCS 2015

44 FLOWLINE DE-COMMISSIONING UKCS 2015

45 FLOWLINE DE-COMMISSIONING UKCS 2015

46 FLOWLINE DE-COMMISSIONING UKCS 2015

47 FLOWLINE DE-COMMISSIONING UKCS 2015 Tie-in Point At Hot Tap Pulling weight from 855m and over 360 of bends Less than 250kg

48 DE-OILING

49 SO TO SUM UP Using the Revolution Motor to reach deep into Flowline. Using the right pipe to avoid large equipment and abrasive wear. Helps us overcome capstan friction problem. Allowing us to set up pressurised intervention equipment where it wasn t possible before. Reduce need for Vessel/Rig Intervention reducing costs of pipeline blockages, restrictions and de-commissioning.

50 SO TO SUM UP

51 IT S TIME FOR A PARADIGM SHIFT IN FLOWLINE INTERVENTION