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A major producer operating a CO2 flood operation in the southeast United States experienced a production decrease in many of their wells. These wells were producing 42º API gravity crude oil from depths ranging from 4,500 to 5,500 ft (1372–1676 m). Asphaltene deposition at the surface and bottomhole resulted in shut-ins and deferred production.

Baker Hughes, a GE company (BHGE) implemented a new cost-effective FORSA™ asphaltene inhibition program to optimize treatment rates, increase squeeze life, enhance production, and eliminate downtime. The success of this treatment program prompted the operator to implement it fieldwide.

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Challenges & Results
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Challenges

  • CO2 flood operation, 42º API gravity crude
  • Decreased production caused by asphaltene deposition
  • Limited application options because of well construction profile
  • • Wellbore chemical squeeze was the only viable option
  • Treatment frequency and related costs were outside the scope of the operator’s budget

Results

  • • Decreased well intervention and treatments approximately 60%
  • Saved more than USD 2.5 million in annual treatment costs based on 10,000 BOPD production
  • Cut deferred production by more than 10,000 bbl per year by reducing shut-in time