RipTide™ drilling reamer

Hole Enlargement While Drilling - HEWD

Chad D. Evans, P.E.

© 2009 Weatherford. All rights reserved. 1

Patent Pending Lock Mechanism

The mass balanced, concentric design of the cutter blocks and

mandrel piston minimizes vibration.

Strategic positioning of the PDC cutters disperses work rates more evenly across all stages of the cutter block.

Gauge trimmers control cutting depth during each

rotation.

RipTide’s cutter block patented locking

mechanism reduces vibration and increases

stability

© 2009 Weatherford. All rights reserved. 2

Fluid Path & Actuation

locked closed position

ball drop – open position

shear pinsball seat

ball

compressed spring

flo-tell

mandrel piston

positively deployed

fully recessed

© 2009 Weatherford. All rights reserved. 3

Dual-component Body

controller

reamer body

© 2009 Weatherford. All rights reserved. 4

Controller

• Flexibility:

– Ball drop activated shear mechanism

– Pressure activated shear mechanism

– Pulsed Telemetry controller

– RFID controller

© 2009 Weatherford. All rights reserved. 5

Controller

mechanical RFID

© 2009 Weatherford. All rights reserved. 6

WFT-Marathon RFID Project

controller tag

© 2009 Weatherford. All rights reserved. 7

Controller

• The RFID R&D is a Weatherford – Marathon JV.

• Application & Benefits:

– Multiple & selective “open / close” actuation

– Dual RipTide drilling reamers in the BHA

– No affect on bit, RSS, or MWD/LWD hydraulics

© 2009 Weatherford. All rights reserved.

Features

• Proprietary PDC cutters

• Mass balanced concentric design

• Lock-closed mechanism

• Dual component design

• Cutter block designed to “grip” body at full actuation for improved rigidity

• Full length junk slot for efficient cooling and cuttings removal

• Positively forced retraction of cutter blocks when pulling against the casing shoe

• Back reaming capability

© 2009 Weatherford. All rights reserved. 9

Field Trials

• 1st Field Trial

– 10625 Reamer

– Hole Enlargement 12 ¼

– 5,000 meters

– Kiev, Ukraine

• 2nd Field Trial

– 8500 Reamer

– Hole Enlargement 9 7/8

– 2,500 meters

– Formation 7,000 to 9,000 psi

– Poza Rica, Mexico

© 2009 Weatherford. All rights reserved.

RipTide™ drilling reamer

Hole Enlargement While Drilling - HEWD

Chad D. Evans, P.E.

© 2009 Weatherford. All rights reserved. 11

Specifications

SeriesBodyO.D(in.)

ToolI.D.(in.)

Min.PilotHole Dia.

(in.)

Max.OpeningDia.(in.)

Max.Flow(gpm) Tool Joint

6000 5-3/4 1-1/2 6 7-1/2 400 3-1/2 IF

8500 8-1/4 2-1/8 8-1/2 9-7/8 850 4-1/2 IF.

10625 10-1/4 2-5/8 10-5/8 12-1/4 1,300 6-5/8 Reg.

12000 11-3/4 3-1/4 12 14-3/4 2,000 6-5/8 Reg.

14750 14-1/4 3-1/4 14-3/4 17-1/2 2,000 7-5/8 Reg.

16500 16 3-1/4 16-1/2 20 - 22 2,000 7-5/8 Reg.