PRIME Cleanout

Part of the PRIME digital electro-hydraulicintervention technology platform
Critical to optimizing rotational based wellbore cleanout operations
is the ability to provide the required parameters of torque, weighton bit (WOB) and RPM combined with a specifically designed bit andaugur system, 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 rotational based debris dislodge anddebris collection exercise, to handle the often confronted variations
in debris material type (e.g. solids, viscous slurries, junk) anddeposition (e.g. partial or full bore, compacted or loose). With debris
often accumulating in highly deviated sections of a wellbore, suchparameter control is also required in this circumstance.
The PRIME Direct Drive Rotation (DDR) is a highly instrumented, hightorque rotational device with real-time in-well monitoring, control, andadjustment capability.
Built on a common tool architecture, the PRIME DDR is seamlessly
integrated with the PowerTrac® PRIME Tractor which, in addition toproviding efficient conveyance of the cleanout toolstring to task depth,
also provides the required rotational anchor and the controlled WOB
for bit advancement into the debris column in deviated wells.

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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)Temperature
rating350°F (177°C)

Further efficiency gains come from active stall control recovery which vastly improves effective debris dislodge of collection
time. On-the-fly switching capability of the rotational anchor between free-wheeling (rolling) or tractor driven mode enables
uninterrupted back reaming capability. This is crucial when effectively “drilling” into a debris column while simultaneously
accumulating the debris in collection chambers for removal from the wellbore.

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PrecisionCollector

A robust, full system cleanout technology
Applications• Removal and collection of a wide
range of wellbore debris:• Unconsolidated (e.g. proppants,sand)• Consolidated (settled barites, hardscale)• Vicious (asphaltenes, waxes)• Wells where circulation forcleanout is not recommended or
not possible

Features and Benefits• Robust mechanical collection
mechanism, not requiring fluid
circulation• Mechanical interaction and friction
separates debris from fluid, rather
than filtration• Highest solids recovery content percollected volume of debris• Customizable bottom holeassembly (BHA) with operational
flexibility depending on debris inwell• Real-time monitoring of key millingparameters; weight on bit (WOB),
bit speed, vibration• Provides loosening, collection andrecovery of debris to surface in onerun• Best technology option if debris
composition and consistency isunknown or varying• Operates in wet and dryenvironments• Precise, cost effective and low risk
• wellbore cleanout service• Light on logistics, footprint,
personnel, and timebakerhughes.com

The PrecisionCollector is a robust, full system cleanout technology that can remove
a wide range of debris types in varying well conditions. It mills, agitates anddislodges the debris downhole, collecting and retaining it in debris chambers fortransportation out of hole. It is run in combination with PowerTrac® for anchoringand providing weight on bit, coupled with a Direct Drive Rotation (DDR) device togenerate the required rotational force.

Tool body OD

PrecisionCollector

PrecisionCollector

PrecisionCollector

PrecisionCollector

2.50 in (63.5 mm)

3.50 in (88.9 mm)

3.8 in (96.5 mm)

4.5 in (114.3 mm)

250

350

380450

Typical bit types used

PrecisionRock Bit

Recommended minimum bit
size OD≥ 2.625 in.

≥ 3.625 in.

≥ 3.925 in.

≥ 4.625 in.

Capacity per reservoirchamber OD

0.62 gallons (2.36 l)

1.36 gallons (5.16 l)

1.53 gallons (5.8 l)

2.48 gallons (9.4 l)

Makeup length single
reservoir chamber

3.6 ft (1.10m)

3.9 ft (1.19m)

3.9 ft (1.19m)

3.9 ft (1.19m)"Standard” configuration
capacity 2,4

3.12 gallons (11.8 l)

6.82 gallons (25.8 l)

7.66 gallons (29.0 l)

12.42 gallons (47.0 l)“Standard” configuration
total makeup length 2,519.4 ft (5.91 m)

21.8 ft (6.65 m)

21.8 ft (6.65 m)

21.8 ft (6.64 m)

System pressure rating

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

15,000 psi (1,034 bar)

15,000 psi (1,034 bar)

System temperature rating

350°F (177°C )350°F (177°C )350°F (177°C )350°F (177°C )Deviations

Vertical to horizontal

Vertical to horizontal

Vertical to horizontal

Vertical to horizontal

Tool OD only (not bit OD).
Standard configuration for PrecisionCollector is 5 reservoir chambers but may be increased
dependent
22

on rig up height.
3Standard output. Customizable down gearing possible with a 3:1 gear.

4

Excludes volume in bottom connector for all sizes and top section for 350,380 and 450

Length includes reservoir chambers. Does not include length of RockBit, Direct Drive Rotation,
PowerTrac® and accessories
55An additional capability offered by PRIME platform’s instrumentation communication bus embedded within the toolstring
infrastructure is the addition of a connected fill indicator device. Integrated into the fluid exit sub of the top debris collection
chamber, this device provides a clear and immediate real-time indication of when the collection chamber string is full ofdebris. This elevates the operational certainty and efficiency gains to the PrecisionCollector’s debris collection process,eliminating unnecessary collection time and pulling out of hole with a partially full chamber string. In addition to the obvious
time savings, this feature minimizes the well exposure time of the debris collection phase, and in doing so considerably reduces
the risk of the collection string getting stuck in the well.
The PowerTrac® PRIME Tractor and PRIME DDR’s advanced real-time controls and feedback take wellbore cleanout into a
new performance envelope. The rotational torque and RPM of the DDR as well as tractor force and speed can monitored andcontrolled simultaneously, in real-time, allowing parameter adjustments according to encountered conditions. As an example,
when drilling into heavy debris and increased torque is observed the rpm can be reduced along with feathering of the WOB.
If cleaning through debris bridges the rotational torque limit may be lowered while full rpm is maintained. Once clear, tractor
speed can be increased to perform a rapid scraper pass till the next ledge of debris is confronted. This allows fast forward
movement without accidentally forcing the bit into new debris in the well trajectory. Active stall control and seamless backreaming capability allow easy wiper tripping while always maintaining rotation of the tools exposed front end – the bit andauger.

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PRIME Release Sub System

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

Features and Benefits• Release energized throughwireline or battery

PRIME Release Sub System – The Release Sub System (RSS) has been developed
to enable controlled release of stuck toolstrings. Multiple RSS’s can be utilized,
placed at the top of the toolstring or at relevant positions along its length
enabling partial retrieval. The PRIME RSS has integrated PRIME node electronics,
enabling full PRIME communication and in-well functionality to PRIME tools
positioned below, and in-hole reconfigurability for release parameters. It also
provides real-time release status based 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• Real time in-well configuration toadapt for changes in work scope• Can release even if cable isdamaged• QHSE; reduces personnel
exposure to cable breakage atsurface due to high overpull• Improved operational
efficiency; less runs, increased
measurements per run

RSS 218

PRIME RSS 212

RSS 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)

Min restriction ID2.5 in. (63.50 mm)

2.625 in. (66.68 mm)

3.25 in. (82.55 mm)

Pressure rating

15,000 psi (1,034 bar)

15,000 psi (1,034 bar)

15,000 psi (1,034 bar)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)• More efficient retrieval/fishing
due to clean fishing neck after
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