Devico AS The company: –Located in Melhus near Trondheim, Norway. –Spin-off from SINTEF....

Devico AS• The company:

– Located in Melhus near Trondheim, Norway.

– Spin-off from SINTEF.– Established in 1988.– 30 employee.– International offices: Canada, Bulgaria,

Hong Kong.

• Business segments:– Directional core drilling services.– Borehole surveying tools sale and services.

• Company arena:– More then 30 countries.

Products

Products for Directional Core Drilling /DCD/ Services

• DeviDrill - Directional core barrels (US patented 6.516.900). • DeviSoft - Software for DCD & SRV (planning, calculations and plotting).

Products for Borehole surveying• DeviTool - Magnetic survey tools. • PeeWee – Miniature magnetic survey tool.

• DeviFlex - Non magnetic survey tool.

• DeviCore - Continuous core orientation system – CCO (New).

DeviDrillTM Wireline Technical Specification

• Hole : N-Size (76mm) • Core : 31.5mm / 3m

length• Recommended dogleg

= 9o/30m ( R=180m )• Max. dogleg = 12o/30m• Onboard survey tool• Measure while drilling

(MWD)• Requires no reaming out• Bluetooth

communication

DeviToolTM StandardTechnical Specification

• Electronic Multishot System (EMS) • Weight : 1.3 kg • Diameter : 30mm / 1.18”• Length = 830mm• Battery Capacity : ~40,000

measures• Internal Memory : 1,984 measures• Temperature : -15 to 75oC (5 to

167oF)• Pressure : Depends on Running Gear• Azimuth Range : 0o-360o

• Inclination Range : 0o-180o

• Bluetooth communication• Accuracy :-

– Inclination : 0.2o

– Azimuth : 1o

– Toolface (Gravity) : 0.2o

– Toolface (Magnetic) : 1o

DeviToolTM PeeweeTechnical Specification

• Electronic Multishot System (EMS) • Weight : 2.4 kg / 5.29lb w/ batteries• Diameter : 30mm / 1.18”• Length = 975mm / 38.4”• Battery Capacity : ~40,000


167oF)• Pressure : 300bar / 4350psi• Azimuth Range : 0o-360o

• Inclination Range : 0o-180o



– Azimuth : 1o


– Toolface (Magnetic) : 1o

DeviFlexTM Non-MagneticTechnical Specification

• Electronic Multishot System (EMS) • Weight : 20kg• Diameter : 40mm• Length = 4m• Battery Capacity : 3-4months

(continues)• Internal Memory : 1,984 measures• Temperature : -15 to 75oC (5 to

167oF)• Pressure : 300bar / 4350psi• Inclination Range : 0o-180o



– Azimuth : 0.01o/station


DeviDipTM Technical Specification

• Electronic Multishot System (EMS) • Weight : 0.7kg• Diameter : 30mm / 1.18”• Length = 495mm• Battery Capacity : ~40,000


167oF)• Pressure : Depends on Running Gear• Inclination Range : 0o-180o




DeviCoreTM Technical Specification

• Continues Core Orientation (CCO)• Survey borehole inclination• Single core orientation• Fits in NQ drilling system• Battery Capacity : ~40,000

measures• Internal Memory : 1,984

measures• Temperature : -15 to 75oC (5 to

167oF)• Inclination Range : 0o-180o




Directional boreholes applications

1. Multilateral boreholes 2. Monobore boreholes

Borehole design example (Boliden Kristineberg Mine Sweden)

Multilateral Borehole Planning

DCD Cost Saving cont.

Parm/Tech Devico Wedges M-Motor

RE-Drill

20 deg. Deviation require FTG, meter

86 m 120 m 86 m 800 m

Build up rate, 0/30m 7,0 deg/30m 1,5 per wedge

7,0 deg/30

Daily production, m/day 7,0 m 1 opr./2day 3 m 25

Time required, daysTIME SAVING

13 days19 DAYS

35 days+ 3 DAYS

29 days3 DAYS

32 days

Target hit probability, % 95 % 70 % 95 % 50 %

COST SAVING comp. to redrilling in %

74%

21%

40.7 %

0%** Cost per month. 74

%

Devico technology comparison with other methods

DCD Cost SavingDCD calculator

Available at www.devico.no

Activity description Qty/prices

Rig and crew shift rates 3200 $One or two shifts 1

Time to move the rig to new site 1 day

Cost to move rig to new site 2870 $

Required deviation degree 9 º

Dogleg servity º/30meter 12 º/30m

Kick-off depth (KOP) 800 meter

Expected Production rate for Directional Drilling 20 m/day

Required distance for directional Core drilling 279 m

Required time for directional Core drilling 10 days

Expected production rate Conv. Core drilling 25 m/day

Conv.drilling Cost per meter 110 $/m

Casing cost per meter 150 $/m

Required casing through overburden 15 meter

Approx. Cost saving 52 % 77 806 $

Approx. Time saving 67 % 32 days

The cost saving are only describing the direct cost compared to re drilling from surface.

The time saving will also represent a cost saving that will make the picture even more ecconomic valuable.

0 %

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

1

Cost Savings

Time savings

DeviFlex in a 100 m steel pipe with know exit coordinates.

Horizontal Accuracy:

+/- 0.16 m at 100 m 1.6 m at 1000 m

Vertical accuracy: +/- 0.07 m at 100 m 0.7 m at 1000 m

The

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DeviFlex survey in Kristineberg

Depth 822 m

50 m

3 run within 3 meter at 822 meters depth.

Drilling Occurred from 2003-2005Completed 18 targets and approx 12,500 meters of drilling in First Phase7500 meters of drilling and 11 targets were achieved in the second phaseAll new branches were created bysteel by-pass wedgesReduced the program by approx.10,000 metersAverage success rate of nearly 90%

Cost and time saving

Devi-Drill - Directional Drilling In Venezuela

DeviCaseTM

Devi-Drill - Directional Drilling in Newfoundland

Drilling Since Sept. 0510 Targets have been completed to dateNew branches were created with steel wedges due to cement issuesWedges placed between 600-700mTarget depths between 950-1100mReduced coring by approx. 7000mTarget Success rate of 90%

DeviCaseTM

Drilling Occurred from 2001-200215 Target ProgramNew Branches were formed using steel by-pass wedges and by cutting off in areas of greater then 7 degree dog-legs using a stabilized core barrel assemblyApprox. 11,000 meters of drillingThe work was performed on seven hour double shiftAverage success rate of nearly 90%

Devi-Drill - Directional Drilling In Ontario

DeviCaseTM

Customers comments. Rupert Goldcorp Resources’ Red Lake, Ontario - Canada

North East view of drilling operations. Grid (100m between lines) One drill hole can easily cover 10,000m2

100m

Contact Information for the case study:

John Robbins P. Eng. Project GeologistAREVA Resources CanadaE-mail: [email protected] Canada:1-306-244-2554 (phone)

mailto:[email protected]

mailto:[email protected]

DeviCase – South-Africa

• Horisontal coal inseam drilling

• Boreholes up to 1500m• Mapping of fault

dislocations in the deposit

• Totally 170.000m since 1994

– Manhattan New York.

Shinkansen Japan

Tunnel for Shinkansen high speed train

Length 500 meter

Deviation 20 degrees

Date: Nov-Des. 2002

Operator Nikko Exploration

DeviCaseTM Geotechnical project.

• Subsea tunnel Bømlafjord in Norway - 930 m.• Reduced risk.• Improved QA • Resulted in redesigned tunnel allignment.

DeviCaseTM – Jurong Island, Singapore

• Investigation of underground oil storage in sedimentary formation.• 6 borehole 4-600 m• 30 Deg to horizontal

.

Metrowest water tunnell.

Length 700 meter.

Reduced risk and better bids

2.5% spred in the bids.

Normally 30% spred in the

bidding

DeviCaseTM – Boston - USA

DeviCaseTM – Po Shan Road, Hong Kong

• Two Boreholes.– HDD1 - 243 m– HDD2 - 311 m

• Duration 33 days.• Directional meterage – 264

meter• Average production rate 7,42

m per 8 hour shift.• Drilling operator Intrafor

DeviCaseTM – Eagle’s Nest Tunnel

• Two horizontal boreholes.– HDD1 – 1152 m (record)– HDD2 - 550 m

• Duration - 87 days.• Directional metarage - 443

m• Average production rate –

6,5 m/shift.• Drilling operator Intrafor.

DIRECTIONAL DRILLINGContinual Advancements in Drilling Techniques

SHEA CREEK ProjectSaskatchewan, Canada

John Robbins P. Eng. Senior Project Geologist

AREVA Resources Canada

Agenda• Introduction

– Who am I and why am I talking to you?• DeviDrill

– Cover some of the basics• Operations at Shea Creek, Saskatchewan, Canada

– Why do we use DeviDrill?

– How we use it?

– Drill hole traces

– Issues to consider• Acknowledgments

Introduction

• Started and continuously use directional drilling since 1999• 1999 to 2004

– Variety of mud motors from different companies• 2004 to present

– DeviDrill from Devico• Completed more than 3 800 metres of actual directional drilling

representing 102 directional holes as of December 2006

DeviDrill• How it works (simplified version)• Directional core barrel attached to drill string• Rotate the core barrel in the direction you want to go• Correct for azimuth, dip or both• Inflate an onboard packer to hold the core barrel in place for the change in hole path• Drill as normal within the specifications of the DeviDrill

• Core is obtained using a wire-line system

DeviDrill• Steering the core barrel

– Mule shoe system used to determine the “Roll” of the core barrel. “Roll” explained as the deflection of the core barrel (0-360o) in relation to the azimuth of the hole

• Tests (azimuth and dip) ahead of the bit can be performed at anytime while the DeviDrill is still in the hole using a survey instrument.

• Devico provides all survey tools and adaptable third party tools can be used

Mule shoe system

Operations at Shea CreekCANADA

Saskatchewan

Athabasca Basin

Thelon Basin

SHEA CREEK PROJECT

• Why do we use DeviDrill?– Have to look at our mud motor operations in the

past – AREVA Resources with the help of Boart Longyear

pioneered directional drilling in the Athabasca Basin.

Operations at Shea Creek

• Why do we use DeviDrill?– Less equipment and water on site

• No extra pumps, mixing tanks and rods (normally reduce one rod size smaller when using a mud motor)

– The DeviDrill does not require extra equipment or water


Pump

MixingTanks

Rods

• Why do we use DeviDrill?– No hassles with bit configurations to control the amount of water at

the bit face.– The DeviDrill uses a coring bit similar to normal drilling operations.


EXTRA HOLESADDED

UNPLUGGEDHOLES

PLUGGED HOLES

• Why do we use DeviDrill?– Reaming shells are not standard equipment on mud motors.

Reaming directional cuts increases the cost per metre. Successful prototypes where introduced at our operations.

– Reaming shell is standard equipment with DeviDrill.


Prototypereaming shellfor mud motor

• Why do we use DeviDrill? – Survey ahead of the bit. To know where you are in a directional cut is

crucial to positioning a hole towards a target.– Any mud motor system relies on surveys (real time, multi or single

shot) 9 to 12 metres behind the bit within a non-magnetic portion of the drill string. An estimate has to be made to determine the hole orientation at the bit or the motor has to be pull out of the hole and replaced by the core barrel to perform a survey.

– Devico provides a miniature survey tool (single or multi-shot) that can through the DeviDrill bit.



• Why do we use DeviDrill? (the main reason)– Cost savings

• 2006 drilling compaign, 19 directional cuts with the DeviDrill from three pilot holes

• Average savings of 62% using the DeviDrill instead of re-starts from surface.

• Maximum savings per cut was 87%• Minimum savings per cut was 50%

– Included in DeviDrill costs are hourly rate for drilling, rental of DeviDrill and survey equipment and all chargeable equipment including wedges, bits, drilling muds and equipment repair.


Comparison of Directional Drilling versus

Restarting from Surface

DeviDrill costs

Estimated

coring costs

• How we use it?– Possibly a unique situation at Shea Creek– A trained designates perform all the pre-planning; decide when to

put or pull the DeviDrill from the drill hole and determine the direction to steer the core barrel.

– The drill contractor (Boart Longyear) performs all down hole operations with the DeviDrill, schedule maintenance and repairs.



• How we use it?– Targets are planned between 650 metres and 850 metres below

surface.– Distance or step-outs away from the pilot hole (vertical) varies

between 20 metres and 100 metres.– A wedge is placed in the hole to start the cut and directional drilling

occurs thereafter.– Rate of drilling is similar to normal coring. Between 500-600 metre

depth, 9 to 12 metres in a 12 hour shift. Time for setting the core barrel and taking tests consume time.

– Test taken every 3 metres, 6 metres maximum


• How we use it?– Maximum rates of curvature performed (not recommended)

• 1o per metre when drilling with hole direction (flattening or steeping a hole)

• 10o per metre when drilling perpendicular to hole direction (correcting for azimuth)

• Dogleg 12 degree/ 30 meter )– Normal rate of curvature performed at Shea Creek

• 1o per 3 metres when drilling with hole direction• 10o per 3 metres when drilling perpendicular to hole direction• Dogleg 9 degree/ 30 meter


– How we use it?• Rock type being drilled is Proterozoic sandstones

– Laymen terms - silicified or “hard” sandstone – Series 7 and 8 drill bits (Boart Longyear) are used for coring


• Drill hole traces

Pilot Holes

Directionalcuts

100m

Foot print of Zone 2 McArthur River


• Drill hole traces

Directional DrillingShea Creek

Operations at Shea Creek• Drill hole traces

3-DRendering

ofSHE -102

1 to 11

Plan View of

SHE-102 1 to 11

250m190m

SHE -102-2

SHE -102-10SHE -102-4

SHE -102Pilot Hole

SHE -102-3

SHE -102-5

SHE -102-8SHE -102-9

SHE -102-11

SHE -102-6

SHE -102-7SHE -102-1

4

5

3

7

444

pilot hole1

2

9 8

6

1011

NOTE: Pilot hole is inclined fordisplay purposes only, the pilot holewas drilled vertically.

Deviations from previous cuts


• Issues to consider– Target objectives

• What do you want to achieve? • Is it feasible to use? Depth is not the only factor to consider.

– Directional drilling has a learning curve• Experience is required, where do you get it?

– Devico or “Licensed Users” of Devico– Reputable drilling contactors with experience

– Geotechnical properties• good ground conditions are required• fabric orientations have to be considered

– Be committed and ready• Directional drilling requires input from all parties involved, “The

clock is ticking when you start and money is being spent”. – Maybe challenge a myth or two

• RODS DO BEND!

Acknowledgements

BOOTH #0321

Devico AS The company: –Located in Melhus near Trondheim, Norway. –Spin-off from SINTEF....

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Transcript of Devico AS The company: –Located in Melhus near Trondheim, Norway. –Spin-off from SINTEF....