DCR Digital Controlled Release Tool | SLB

DCR

Digital controlled release tool

LIVE digital slickline services.

The digital controlled release tool (DCR) provides operator-commanded or timed fail-safe release of the LIVE digital slickline services toolstring in the event it becomes stuck inhole. The DCR enables complete recovery of the digital slickline cable and toolstring above the separation point, while the released string and DCR sub left inhole terminate in a standard fishing neck. Both external and internal profiles provide clean access to the stuck string for subsequent fishing runs. The DCR can be run in any position within the digitial slickline toolstring, allowing sure release of valuable tools if stuck.

The DCR is actuated by one of two options.

  • The first is by operator command from surface when it is decided to abandon attempts to free the string.
  • The second is by fail-safe timed release. Once actuated, the timer counts down 24 hours and releases the tool even if communication with surface is lost. The timer can be stopped, reset, and restarted as required during the job.
Mechanical Specifications  
Mechanical Specifications Temperature rating   302 degF [150 degC]
Mechanical Specifications Pressure rating   15,000 psi [103.4 MPa]
Mechanical Specifications Length   22.8 in [580 mm]
Mechanical Specifications Length of fishing section   6.9 in [176 mm]
Mechanical Specifications Outside diameter   1 11/16 in [43 mm]
Mechanical Specifications Weight   11.0 lbm [5.0 kg]
Mechanical Specifications Service   H2S service
Mechanical Specifications Top thread   1 33/64-in 12 Stub ACME (BEST) female
Mechanical Specifications Bottom thread   1 33/64-in 12 Stub ACME (BEST) male
Mechanical Specifications Fishing neck internal   1.062 in (engage with 1 1/2-in GS pulling tool)
Mechanical Specifications Fishing neck external   Modified 1.75 in (engage with 2 1/2-in JDC pulling tool)

DCR tool string illustration.
DCR tool.
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