US-based oilfield services company Schlumberger has launched a new system to enable and monitor a well’s dynamic underbalance to create perforations that increase reservoir productivity.

Introduced at the Coiled Tubing and Well Intervention Conference and Exhibition run by the Society of Petroleum Engineers (SPE) and Intervention & Coiled Tubing Association (ICoTA), the Tempo instrumented docking gun system combines a plug-in design with real-time advanced downhole measurements.

Using the docking components, the deployment of up to 40 guns can be streamlined for selective initiation. As a result, multiple reservoir zones can be efficiently perforated with an optimised explosives payload.

"Customers will benefit from increased hydrocarbon production through better quality perforations providing improved connectivity between the reservoir and the wellbore."

Schlumberger Wireline president Djamel Idri said: “The Tempo system delivers a major step in improving well site safety and operational efficiency, as well as providing real-time measurements in perforating operations.

“By optimising the dynamic underbalance in the well to minimise or eliminate perforation damage, customers will benefit from increased hydrocarbon production through better quality perforations providing improved connectivity between the reservoir and the wellbore.”

The Tempo system is claimed to accommodate a wide range of perforating gun sizes and shaped charges.

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The objective of the simplified arming process is to enhance safety and reliability through the elimination of the variability caused by well site crimping and wiring.

An independent third party tested the design of the Tempo system, certifying it as an API RP 67 Group 2 initiator.