PRIME Milling

Part of the PRIME digital electro-hydraulicintervention technology platform
Critical to optimized and efficient milling of wellbore completion
components is the ability to provide the required millingparameters of torque, weight on bit (WOB) and RPM, combinedwith a specifically designed mill bit, in turn delivering optimized
rate of penetration (ROP) throughout the task at hand.

Also critical is the ability to monitor, control and adjust theseparameters throughout the milling exercise, to handle variations
in component material, shape, and dimensions, as well as thesurrounding fluid changes and swarf build up.
The PRIME Direct Drive Rotation (DDR) is a highly instrumented,
high torque rotational device with real-time in-well monitoring,
control and adjustment capability.

Built on a common tool architecture, the PRIME DDR is seamlessly
integrated with the PowerTrac® PRIME Tractor which, in addition
to providing efficient conveyance of the milling toolstring to task
depth, provides the required rotational anchor and the WOB
control in deviated wells. On-the-fly adjustment of tractor force
offers seamless adjustments to WOB allowing optimum millingparameters to be maintained throughout the operation.

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Further efficiency gains come from active stall control recovery which vastly improves effective milling time. On-the-fly
switching capability of the rotational anchor between free-wheeling (rolling) or tractor driven mode enables uninterrupted
back reaming capability.

PRIME DDR 212

PRIME DDR 318

Tool body OD

2.5 in. (63.5 mm)

3.307 in. (84.00 mm)

Length

7.78 ft (2.37 m)

7.64 ft (2.33 m)

Pressure rating

15,000 psi (1,034 bar)

15,000 psi (1,034 bar)Temperature rating

350°F (177°C)

350°F (177°C)

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PRIME Release Sub System

To enable controlled release of stuck toolstrings
Applications• Logging toolstrings in cased andopen hole
• Tractor conveyance and Powered
Mechanical Applications

Features and Benefits• Release energized throughwireline or battery

PRIME Release Sub System – The Release Sub System (RSS) has been developed toenable controlled release of stuck toolstrings. Multiple RSS’s can be utilized, placedat the top of the toolstring or at relevant positions along its length enabling partialretrieval. The PRIME RSS has integrated PRIME node electronics, enabling full PRIME
communication and in-well functionality to PRIME tools positioned below, and inhole configurability for release parameters. It also provides real-time release statusbased on sensor reading and battery life measurement.
RSS release is activated by telemetry commands, voltage variation or memory
timer mode, enabling controlled release even with damaged cable.

• Extended battery life• High torque design enabling
usage with milling applications

RSS 218

PRIME RSS 212RSS 318

Tool body OD

2.125 in. (54.00 mm)

2.5 in. (63.50 mm)

3.125 in. (79.38 mm)

Length

3.41 ft (1.04 m)

3.63 ft (1.10 m)

3.9 ft (1.19 m)• Can release even if cable isdamaged

Min restriction ID

2.5 in. (63.50 mm)

2.625 in. (66.68 mm)

3.25 in. (82.55 mm)

Pressure rating

5,000 psi (1,034 bar)

5,000 psi (1,034 bar)

5,000 psi (1,034 bar)

• QHSE; reduces personnel
exposure to cable breakage atsurface due to high overpull

Temperature rating

350°F (177°C)

350°F (177°C)

350°F (177°C)

Fishing neck1.38 in. (35.1 mm)

1.75 in. (44.5 mm)

1.75 in. (44.5 mm)• Real time in-well configuration toadapt for changes in work scope• Improved operational
efficiency; less runs, increased
measurements per run• More efficient retrieval/fishing
due to clean fishing neck after
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