CASE STUDY #120 NORTH SEA CHALLENGE OUTCOME  One of the biggest challenges faced by oil and gas operators is the formation of scale which inhibits flow in the near wellbore, perforations, tubulars, downhole control systems and surface equipment. Barium sulfate (BaSO4) scale is a particularly challenging type of hard scale, as it is highly resistant to conventional chemical and mechanical remedial techniques. An operator in the North Sea suspected that a large section of sand screen across a productive zone was plugged by barium sulfate scale. However, the relatively low production rate, coupled with a small, unmanned production platform, precluded most other intervention solutions.  Post treatment, production increased 173% Average Oil Rate*  Well uptime increased from 11.8% to 67.8%. Well Uptime 67.8% 300  Improved production was sustained on the Norwegian continental shelf  250.9 250 extends the economic life of a well for more than 6 months following treatment.  Operator elected to maintain well as a producer, now that its production rate was economical.  Confirmed effectiveness of Blue Spark WASP™ technology to remove BaSO4 scale from completion equipment. to apply the technology. Offshore Production Platform Horizontally Drilled Premium Screens Wireline Tractor Conventional Oil Electro-hydraulic stimulation from 91.8 stock-tank barrels (STB) of oil per day to 250.9 STB per day.  Client is looking for additional candidates HIGHLIGHTS Horizontal Screen / Perforated Cleanout Post-stimulation results: STB per day  SOLUTION 200 150 100 50 91.8 11.8% 0 90 - day Pre-stimulation   Upon consultation with Blue Spark, the operator decided to improve communication with the reservoir by treating the sand screen with Blue Spark WASP™ (Wireline Applied Stimulation Pulsing) technology. A secondary objective was to clean a section of perforated liner. Both treatments were accomplished in the same run in the hole. 90 - day Post-stimulation  Production after the treatment was monitored for rate and pressure. 173% production increase LOCATION North Sea CONDITIONS Depth: 3400 mKB (11155 ft) Deviation: 86 degrees Temperature: 120C (248F) W W W . B L U E S P A R KE N E R G Y . N E T RECONNECT WITH YOUR RESERVOIR USING NO CHEMICALS, EXPLOSIVES OR SURFACE PRESSURE, OUR WELL STIMULATION TECHNOLOGY PRODUCES IMMEDIATE HERE’S HOW RESULTS WITHOUT COMPROMISING WELL INTEGRITY. CASE STUDY #120 NORTH SEA W W W . B L U E S P A R KE N E R G Y . N E T