Downhole Reservoir Testing

Since 1979 we’ve performed over 7,000 drillstem tests and have helped clients accurately characterize their reservoirs. Whether the goal is determining reservoir pressure, permeability, skin, or productivity, our downhole technologies deliver the right answers.

Cased Hole Testing System

In a cased hole drillstem test, where a closed system is desirable due to a high pressure, high temperature environment, this set of tools can be run and activated using pressure. The Cased Hole Pressure Operated tools can be run...

Open Hole Inflate Testing System

Open hole inflate tests utilize a pair of interval spaced packers which are inflated using annular fluid to isolate the formation of interest. This type of testing is adaptable to a wide range of conditions. Inflate testing is the most...

Open Hole Compression System

Conventional drillstem tests use compression set packers set above the formation, with tail pipe below the packers to the bottom of the hole. Placing weight on the tool string opens the hydraulic valve allowing the formation to...

Closed Chamber Testing

Closed chamber testing enables the calculation of inflow fluid volume as a function of time by monitoring surface pressure. It also allows the measurement of the smallest flow rates with pinpoint accuracy, with flow rate and...