Open Hole Bottom Hole: Conventional

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 flow into the tool and rise to the surface.
 
The formation is flowed for a specified time period, after which weight is removed from the tool string closing the hydraulic valve for a specified shut-in period. Measuring flows and shut-ins with this procedure can be performed as many times as are deemed necessary.

Rotating Control Head

Well control at surface.

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TIW(Stabbing Valve)

Drill Pipe

Drill Collars

Pump-Out Sub

The Pump Out Sub is used to circulate fluid from the drill string after the DST has been completed and the drill string is ready to be removed.

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Drill Collars

Pump-Out Sub

The Pump Out Sub is used to circulate fluid from the drill string after the DST has been completed and the drill string is ready to be removed.

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Recovery Gauge Carrier

Houses four down hole gauges.

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DH Hydraulic Valve

The Hydraulic Valve is a down hole valve used in opening and closing the flow from the test zone.

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DH Sampler

The Sampler catches a sample of produced fluid and retains the sample at the down hole pressure of the interval at the instant that the hydraulic valve is closed.

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Squeeze Tool

The Squeeze Tool is a check valve that opens to balance tubing to annular pressure when the tubing pressure exceeds annular pressure.

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Extension Joint

The Extension Joint is used to allow free travel of the workstring. This allows operators to get a good indication of hole drag in deviated holes.

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Jar

The Hydraulic Jars allow jarring of the test string to aid in the freeing of downhole tools.

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Safety Joint

The Safety Joint provides a means for releasing from a set of tools that are stuck in the hole.

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Compression Packer

The Conventional Packer contains a telescoping mechanism to compress rubber elements against the formation when weight is applied.

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Compression Packer

Perforations

Interval Gauge Carrier

The Gauge Carrier has been designed as a single body type carrier capable of housing four electronic memory pressure/temperature gauges capable of monitoring either tubing or annulus pressures.

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Collars

Bull Nose