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Welltec - DHA - Downhole Actuator for WFV

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The Welltec DHA Downhole Actuator is a robust, Bi-directional shifter, designed to be deployed on the tailpipe of upper or intermediate completions, to facilitate the mechanical opening / closing of Welltec large bore WFV (Welltec Flow Valve). The DHA provides controlled access to multiple zones isolated during the safe deployment of upper / intermediate completion.
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Furthermore the DHA can be incorporated within applications that require periodical work-over, such as ESP or HSP type wells, for isolation of producing zones, via manipulation of WFV, to allow for work-over in a safe and stable well-bore environment.

The Welltec DHA will engage within the mandrel of the large bore WFV, and through application of set down weight will shift the WFV to open and via overpull will shift the WFV to close.

The Welltec DHA will then pass through, giving a confirmation load signature at surface. 

Multi zone open hole completions

ESP Producers

HSP Producers

Debris tolerant design

Bi-directional

Emergency release

Full bore ID