Integrated workflow characterizes Campos basin fractured reservoirs using pressure-transient tests ///

In 2005, while drilling an exploration well about 120 km offshore in the Campos basin, Petrobras discovered an oil-bearing carbonate reservoir above a salt section and beneath the clastic turbidites that provide most of the production in the area. A sequence of three pressure-transient well tests (DSTs) over three adjacent layers were performed in the first appraisal well, followed up two years later by a four-month extended well test (EWT) to help understand reservoir behavior and geology. Test results were sufficiently favorable to move forward, and a series of development wells were drilled. However, conventional analysis raised some concerns about the quantitative use of well-test data for reservoir modeling and characterization.

Log in to view this article.

Not yet a subscriber?  Find out more and subscribe today! 

Already a subscriber but don’t have an online account? Contact our customer service.



*Access will be granted the next business day.