Quartet Downhole Reservoir Testing System | Schlumberger

Quartet

Downhole reservoir testing system

Single-trip reservoir testing that combines four leading technologies

The Quartet downhole reservoir testing system lets you directly interact with four integrated tools to isolate, control, measure, and sample in one run using a single test solution. The system enables you to obtain the most accurate characterization of your reservoir and achieve safer and more efficient drillstem tests (DST) that are in tune with your test objectives.

Quartet Downhole Reservoir Testing System

Four leading downhole tools in one advanced string for single-trip testing efficiency

75%
Shorter
90%
Less Nitrogen
60%
Fewer Connections
50%
Fewer Seals
35%
Lower Operating Pressure
Quartet Downhole Reservoir Testing System at downhole and surface

Downhole string technology—simplified

The Quartet system is short but powerful, providing numerous advantages over conventional testing strings:

  • Lower operating pressure and less nitrogen increase operational safety.
  • Shorter string combines four tools while eliminating drill collars and slip joints and requiring fewer seals and connections to provide more efficient handling for more cost-effective downhole testing.
CERTIS high-integrity reservoir test isolation system
The CERTIS system combines many features of a conventional retrievable packer with those of a permanent production packer, including a built-in floating seal assembly that eliminates the need for drill collars and slip joints. No string manipulation is required for setting—just apply annulus pressure to activate the hydraulic setting mechanism. At the end of the test, a straight pull releases the packer and then reopens the bypass to eliminate swabbing when coming out of the well.
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IRDV intelligent remote dual valve
The IRDV valve combines a tester valve and a circulating valve that can be cycled independently or in sequence for efficient, nitrogen-free multicycle operations. Both valves can be operated with a single command that is immune to downhole pressure and temperature and easily applied with low-intensity annular pulses.
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Signature quartz gauge
With 100% ceramic-based electronics and proprietary long-life batteries, Signature quartz gauges acquire high-quality pressure data for the entire test duration.
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SCAR inline independent reservoir fluid sampling
SCAR sampling captures independent and redundant representative fluid samples from deep within the reservoir. Collection directly in the flow stream eliminates contamination caused by dead volumes.
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Quartet
Downhole reservoir testing system
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