Downhole Reservoir & Formation Testing - Drill Stem Testing | SLB

Downhole Reservoir Testing

Reliable, repeatable drillstem test data for informed characterization decisions

Schlumberger working with hand on the downhole reservoir testing tool.
Schlumberger working with hand on the downhole reservoir testing tool.

The information you need to understand the reservoir

Since performing the first drillstem test (DST) in 1926, we’ve performed downhole tests that help customers economically achieve their test objectives. When your goal is to unambiguously determine reservoir pressure, permeability, skin, and productivity, our downhole technologies reliably deliver the right answers.

Even in hostile well conditions, we’ll get you accurate downhole pressure measurements. Flexible tool designs deliver reservoir information from multiple zones on the same test, saving rig time and powering rapid updates for your reservoir models.

Illustration depicting downhole reservoir testing tools.
Formation Testing: The Early Days
Discover how, in 1926 near El Dorado, Arkansas, Edgar and Mordica Johnston performed the first commercial drillstem test (DST).
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Downhole Reservoir Testing Offerings