Downhole Test Tools
Since performing the first drillstem test (DST) in 1926, we've designed downhole testing jobs to achieve test objectives economically. Whether your goal is to determine reservoir pressure, permeability, skin, or productivity, our downhole technology delivers the right answers. Accurate downhole pressure measurements, even under very hostile conditions, increase your confidence in reservoir characterization. Flexibility in downhole tool design gives you reservoir information from multiple zones on the same test, saving rig time and allowing you to update your reservoir model sooner.
Isolate, control, measure, and sample in a single run to get the highest quality pressure measurements and representative fluid samples.
Reduces rig time with single-trip setting capability and number of tools in drillstem test string.
The dual-action valve is a full-opening downhole test valve. It is run in the closed position, opened by annulus overpressure, and then reclosed by a second annulus overpressure.
Isolates annulus fluids from perforated intervals during testing and perforation; can withstand high flow rates, temperatures, and pressures.
Shake stuck strings loose.
Operates and controls downhole tools by coded low-pressure pulses.
Protects against pressure surges in the tubing and annulus.
Is used to reverse circulate, spot stimulation fluids, and change cushions.
Enables pressure testing pipe while running in the hole.
Provides reference pressure to the PCT valve.
Isolates annulus fluids from perforated intervals during testing; can withstand high flow rates, temperatures, and pressures.
Controls formation flows and shut-ins.
Supports drillstem testing and operations requiring additional safety barrier.
Allows quick release of test string if string below packer becomes stuck.
Serves as additional safety barrier.
Is used after drillstem test to reverse out fluids produced during test.
Accommodates changes in string length caused by temperature and pressure during drillstem testing.
Enables filling and testing of tubing while running in hole.
The tubing tester valve enables testing of the tubing while running in the hole.
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