Capability Presentation Subsea Sampling Richard Barr Thursday 8 February
Setting the scene The cynics say that we are a cyclical industry that never learns its lessons. Well this time we have an opportunity to do things differently especially if we remind ourselves that we have been part of the problem and therefore we all need including the cynics to be part of the solution too. Deirdre Michie, CEO, Oil and Gas UK
Setting the scene Pivotal time in energy sector Oil price down Production down Maximising economic recovery (MER) CAPEX and OPEX spend reduced Inefficiencies, over engineered, not fit-for-purpose
Complexity versus reliability: subsea systems Possible causes for decreased reliability include the systems are getting so complex with so many components, it is not theoretically possible to build each component to the quality required to have a high total system reliability. In addition, oil companies and retirements have robbed the equipment suppliers of the experienced personnel required to build high reliability equipment. Source: Penn Energy, Evolution of Subsea Well Technology, Mason, P. (Subsea Consultant, Granherne/KBR) http://images.pennnet.com/articles/os/cap/cap_z0607off-hist7.gif Preston Mason in collaboration with Bill Loth
Subsea Sampling
Sampling You cannot manage what you cannot monitor Sampling could be described as the introduction of a controlled leak MER can be assisted through monitoring and managing the process, with an aim to ensuring chemical treatments are optimised unrestricted flow of fluids throughout oil, gas and water streams meet specifications integrity of the wells, pipeline and process facilities Through representative sampling.
Sampling - is prevention better than cure? The sampling stage is critical in understanding exactly what is being produced Is prevention better than cure? or don t you cross that bridge until you come to it Spend a little, save a lot The person who stops sampling to save costs, is like the person who stops the clock to save time
Importance of subsea sampling Provides solutions that support Integrity Umbilical controls Decommissioning Chemical injection Flow assurance issues Metering and allocation Production and operating efficiency maximising economic recovery
Subsea sampling benefits Operational Undiluted No deferment Chemical free Near to source Improved modelling Upstream of deposit No back-out calculations Cleanliness Reduced risk of release More representative sample Provides reassurance of system condition At source result
Subsea sampling system considerations The following parameters should be considered against actual requirements System deployment System connection System disconnection Sample collection cylinders Slops handling Isothermal sampling Isobaric sampling System control System sensors Phase biased sampling Phase enrichment Hydrate remediation
Proserv subsea sampling systems Our experience covers both ROVs and diver operated Collection from trees or manifolds Samples return to surface for transport to lab, or tested at site Bespoke engineering to meet client functional requirements and technical specifications including Closed system Variable volume Corrosive environment Chemical back-flushing Temperature maintenance
Proserv subsea sampling cylinder Manufactured in Aberdeen Two litre sample volume Valves qualified to API 6A-PR2 Removable nitrogen buffer chamber Designed in accordance with PED 2014/68/EU Materials compliant to ANSI / NACE MRO175 / ISO 15156 Design pressure and temperature, 1,379 bar and -29 o C to 177 o C Qualified for use up to depths of up to 3,000 metres during sampling phase, in accordance with API 17D
Case Study
The challenge Operator issue 75% loss in production due to wax Several thousand barrels per day lost production from well Options Review existing samples Well intervention Sample subsea Design requirements Closed loop 2 x 2 litre slops cylinders 6 x 2 litre sample cylinders Water depth of ~100 metres Pressure rating of 1,000 psi minimum Compact design to interface with christmas tree Isothermal sampling - circulation of hot water within skid
The solution Customer required urgent project delivery Operator s challenge obtain sample upstream of restriction Project delivery team established - including design engineers, project managers, buyers and technicians Cross site collaboration between Greenbank sampling product centre and our subsea services Birchmoss facility in short time frame
Customer benefits Complete life-cycle in-house engineering package Design Manufacture Product testing Project manage Proserv delivered an ingeniously simple, fit-for-purpose engineered solution.
Customer benefits Cost effective sample upstream of pipeline restriction Representative fluid chemistry Optimise future chemical supply Improved understanding of flow-assurance Removed potential of working the wrong solution, saves money. Improved safety, reduced risks utilising subsea qualified sample cylinder.
Living our core values Forward as a team Working as one, united numerous personnel across different business functions. Right thing, right way Provided a product fit-for-purpose, not over engineered, designed with ingenious simplicity in mind. Entrepreneurial spirit Through creative thinking, and utilising experiences, a bespoke product was designed. Serious about service Round the clock support, commitment, and on the job expertise. Help, share and communicate Frequent communication both internally, and with customer, resulted in an open relationship being established, and help ensure all parties were working effectively as one.
To Summarise
Target audience for subsea sampling
Further questions Richard Barr CChem, CSci, CMgr, Business Development Manager Production Chemistry T: +44 (0) 1224 737000 D: +44 (0) 1224 737075 Proserv, 4 Greenbank Place, East Tullos, Aberdeen, AB12 3BT Richard.Barr@proserv.com www.proserv.com