Diving deep into Brazil's mid-life pre-salt fields Report

Insight 10 December 2021

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Report summary

Tupi and Sapinhoá pre-salt wells are some of the most productive globally. In 2021, they are producing 17% of global deepwater oil. And the two most mature pre-salt fields have just entered their decline phase. Mid-life performance merits deeper study. We have fit historical production well level data to a decline model to assess historical performance and estimate the potential additional oil recovery from the fields. The decline rates of existing wells and results of the infill campaign will affect Brazil’s future production and revenue levels for decades to come.

Executive summary
Tupi and Sapinhoá – pioneers of the pre-salt
- Impressive production rates have peaked
- Reservoir management challenges
- Injection rates have increased to maintain pressure, but the voidage replacement ratio is below one
- Surface operating capacity is currently limited
- Recently added wells show higher decline rates
- Expectations from current wells
- The potential of an infill drilling campaign
- Defining the number of wells
- 5 more item(s)...