DIRECTIONAL
CORE DRILLINGTECHNOLOGYCORING WHILE STEERING• Directional Core
Drilling• Borehole Surveying
Instruments• Core Orientation• Alignment Systems

Product
BrochureAbout Devico
THE SMART WAYQUALITY ASSURANCE

Devico is a Norwegian company specializingin directional core drilling for the mining andtunneling industry. We help our customers
with equipment and services for steering
their boreholes in the direction they actuallywant.

We are committed to our quality assurance program to ensure wekeep our customers satisfied. All equipment sent for field work
has been through extensive testing in our renovated and extended
workshop. The workshop is equipped with instruments for surface
testing of the DeviDrill, calibration jigs for the survey tools and atest hole facility.

Devico has head office in Trondheim, Norway and branch offices
in Hong Kong, Bulgaria, South-Africa and Brazil. The company wasestablished in 1988, and our engineers have many years experiencein this industry.

At our head office in Norway we are continuously improving our products so that we will always offer the most efficient solutions for themining and tunneling industry. We have skilled developers within our
mechanic, electronic and software departments, who work together
to provide the best products possible for our customers. Devico has
several products patented worldwide.

In addition to Devico’s in-house team, Devico products are
represented by sales agents in all the major markets aroundthe world.

CREATIVE SOLUTIONSState of the art workshop

Devidrill project2

Directional Core DrillingCore drilling is extremely valuable as an
exploration method. But certain aspects makeit slow and more expensive than necessary.
Often, long sections must be drilled before
reaching the target formation. In addition,
natural deviation can change the drill pathand reduce the value of the borehole.

SIDETRACKING WITHOUT CEMENTPLUGS O
 R WEDGES
4 DAYS
SAVED
PER BRANCHWith the Devico technology you can complete a drilling program
quicker, and with higher accuracy than with traditional coredrilling methods.
Devico technology makes it possible to control borehole deviation andsteer the hole accurately towards the target. At the same time, coresamples are collected during the steering process. When the first holeis finalized it can be sidetracked and used again to steer towards asecond target. Sidetracking is easily performed by cutting straight ina curved section of the first hole. By using this method no wedges
or cement plugs are necessary. Making several branch holes may
significantly reduce the length of a drilling program, leading
to remarkable savings in both time and money.
Devico technology has been used successfully all around the world.
Our experience tells us you will be surprised by how easily directionalcore drilling can be implemented in your drilling program.
The quality of your geological information will improve for a fractionof the price, and with less impact on the environment!
To ensure rapid and trouble-free implementation with cost saving
into any drilling program, directional core drilling with the DeviDrill isoffered as a service to our clients throughout the world, performed byhighly trained and experienced DeviDrill field operators.

12 DAYS
SAVED
PER BRANCHHIGHACCURACY

26 DAYS
SAVED
PER BRANCHIMPROVEDGEOLOGICALINFORMATIONMULTIPLE
BRANCHESEXTREME DEEP
HOLE CAPACITY
(3000 M. +)34 DAYS
SAVED
PER BRANCHBENEFITS
There are many benefits using DCD in your exploration project. A few of them are listed here.
Compared to standard wireline drilling (re-drilling from surface)

Compared to other directional drilling techniques• Reduced drilling length• Core in directional sections• Less wear on drilling equipment• Low water consumption• Higher dogleg used due
to smoother curve• Fewer drill sites• All necessary equipment insmall start package• Drill string rotation also
during steering• Fits directly on NWL drill string• Directional surveys performed
at hole bottom (throughout
DeviDrill bit)

• Less environmental impact• Full control over natural deviation• Improved borehole accuracy• High penetration ratein hard rocks• Easily adjustable dogleg• Full N-size borehole and no
additional reaming required3

Directional core drilling

DeviDrill
The DeviDrill is a steerable wireline core barrel. The design of the N-size tool was
introduced in 2001. Today it is successfully applied in various projects all over the world,from mineral exploration to geotechnical investigations.
The DeviDrill reduces the cost of exploration drilling programs byhitting targets quicker significantly and more accurately than withtraditional core drilling methods. By making multiple branches fromone mother hole it dramatically reduces both the time and the cost
spent. In addition, you get the geological information from where
you want. No time is lost on moving the drill rig, drilling throughthe overburden, and drilling further down to where you almost
were with your previous hole.

HOW IT WORKS
The principle behind the tool is a drive shaft running through abushing offset from the centre line of the tool. Expanding pads
operated by a differential pressure keeps the DeviDrill in a fixedTool face while drilling in a curve. The inner assembly carries an innertube collecting the core, a muleshoe system, and an instrument barrel
with the survey tool recording inclination and tool orientation. Data isstored inside the tool and downloaded to a PDA after each run.

TECHNICAL SPECIFICATIONS
Total weight

87 kg/192 lbs

Total length

5400 mm/17.7 ft

Core length

3000 mm/9.8 ft

Core diameter

31.5 mm/1.240”

Bit diameter

75.4 mm/2.969”

Reamer diameter

75.6 mm/2.976”

Tool body diameter

72.0 mm/2.835”

More Technical Specifications on page 15

There is no need to trip drill rods in and out of the hole during
directional coring, surveying and orientation, as the tool is wireline
operated.
The DeviDrill has proved to work well in both igneous and sedimentary rock. Over time, Devico has developed extensive knowledge of
how the DeviDrill behaves under different conditions and provides
valuable experience in directional planning and drilling.

DOGLEGSETTINGSSPECIAL DEVICODIAMOND BIT

4

LOCKING
COUPLING
THRUSTUNIT

SLIDING
PACKERThe DeviDrillTM
technology is protectedinternationally by patents
and patents pending.

TIME AND COST SAVINGS
Clients have reported time and cost savings of up to 80 percent in projects where the DeviDrill was used.
A satisfied geologist stated: “Devico forced the hole down in inclination, and the 1000 meter deep holeswitched from total failure to great success.”
The DeviDrill uses a normal drill string and is fully compatible with the N-size wireline systems. There isno need for additional water pumps, drill strings, or survey instruments. Devico’s survey tools are a fully
integrated part of the tool, as they stay on board and measure while drilling.
-50
0

50

150

100 %
90 %
80 %

200

70 %
60 %
50 %

30 %

600

20 %
10 %

900

Rory’s Knoll. Guyana

26 shifts

40 %37,380 €400

Costsaving

Timesaving

Coring during steering provides a complete
record of the geology. It leaves nothing in thehole - except a bend. The curvature or dogleg
can be adjusted from straight to more than
20 degrees/30 meters. However, the recommended curvature from the drill rod manufacturer is 9 degrees/30 meters, as any greater
deviations can result in extensive wear on the
drill rods0%

Example: Target depth 800 meters and step-out distance 50 meters5Non-magnetic survey tools

DeviFlex

Non-magnetic multishot
If you know how to run your inner tube, you know how to run your DeviFlex.
It is that easy.
DeviFlex is a non-magnetic electronic multishot for surveying
inside casings and drill strings by simply using the wireline system.
Magnetic disturbances will not influence the tool at all, and it’s design
makes it very easy to use. Just pump the tool into the hole and pull
it out in given intervals. No adjustments are necessary.

The DeviFlex communicates with a PDA through a USBmodem.
The results can be viewed on the PDA screen in the field once thedata is downloaded from the tool. The data can thereafter be further
processed in DeviSoft, analyzed, plotted and reported to the client or
given directly to the client on a memory stick.

The DeviFlex tool consists of two independent measuring systems.
Three accelerometers and four strain gauges are used to calculate
inclination and change in azimuth. In addition, the DeviFlex records
and stores gravity vector, temperature, and battery capacity.

TECHNICAL SPECIFICATIONSThe DeviFlex fits casings and drill strings from B-size and up to
H-size. You need one instrument and a set of sleeves with various
wheel sizes to adjust for different hole dimensions. The tool has
proven to work in horizontal as well as vertical holes.

Weight20 kg/44 lbs

Diameter

40 mm/1.58”

Length4000 mm/13.1 ft

Magnetic

No

Running gear

Integrated

Inclination accuracy±0.1º

Direction accuracy±0.01º pr station

Tool face accuracy±0.2º

NON-MAGNETIC
MEASUREMENT

BWL, NWL, HWL
CENTRALIZERSSURVEY INSIDEDRILL RODS

6

SPEAR HEAD
ADAPTERRUNNING
LIKE ANINNER TUBEUP TO 400 HOURSBATTERY CAPACITYDeviSight aligner for accurately measuring start azimuth and inclination of surface
boreholes, see page 11 for further details.

Vertical orientation

7

Magnetic survey tools

DeviShot
The most innovative multishot survey tool on the market.
This NEW versatile rugged instrument features a low voltage wireless communication system with Brilliant Blue Technology (BBT), a
robust integrated running gear, limited maintenance, quality controlof survey data, LED indicator for communication, battery control.

TECHNICAL SPECIFICATIONS
Weight5.7 kg/12.6 lbs

Diameter*

35 mm/1.38”

The DeviShot is designed with user-friendliness in mind andcomes assembled and ready for use straight from the box.
The integrated running gear enables operation at great depths,
while an efficient BBT activation system ensures minimal power
consumption and long battery life.

Length1170 mm/46.1”

Magnetic

Yes

Running gear

Integrated

Inclination accuracy±0.1º

The DeviShot comes equipped with the IP67 rated Nomad PDA
system and the highly flexible DeviSoft.Mobile software. It canbe used in most situations and will for instance easily operate as
single shot, multi shot, with constant or variable depth interval, andfor surveying in and/or out. The instrument is ready to go as it is,regardless of whether you want to survey exploration boreholes,
grout curtains or blast holes.

Azimuth accuracy±0.5ºTool face accuracy±0.2º

The DeviShot is using Brilliant Blue Technology to communicateswirelessly with the PDA and the results can be viewed on the PDA
screen in the field once the data is downloaded from the tool. The
results can thereafter be transferred to a USB-memory stick andgiven to the client, or further processed in DeviSoft, analyzed andplotted.

*Also available in 30 mm.

BATTERYPACK

RUGGED
ELECTRONICS

WIRELESS
LED-INDICATOR

BOTTOM
SUB

8

Rugged single and multishot system

DeviTool Standard
The original model from Devico with a separate running gear.
DeviTool Standard is an electronic single or multishot survey
instrument. Its rugged design makes it tough enough to stay inside
the DeviDrill core barrel while drilling and still provide reliable
results. The Devitool Standard uses three high-accuracy magnetometers and accelerometers. The tool records inclination, azimuth,
toolface, gravity vector, magnetic field vector and magnetic dip
angle, as well as temperature and battery status. Time intervals canbe set from 5 seconds and up. The DeviTool Standard performs
all-angle surveys with high precision. The survey tool is delivered in
an interchangeable running gear where all parts are included. The
connector port in the running gear makes the download of survey
results fast and easy. It is delivered in a transport box that is easy
to carry around. The tool has been successfully used in a broad
variety of applications all over the world.

TECHNICAL SPECIFICATIONS
Weight8.8 kg/19.4 lbs

Diameter

36 mm/1.41” & 38 mm/1.50’’

Length1900 mm/74.8”

Magnetic

Yes

Running gear

Integrated

Inclination accuracy±0.1º

Azimuth accuracy±0.5ºTool face accuracy±0.2º

The DeviTool Standard communicates with the PDA through a
USB modem and the results can be viewed on the PDA screen in
the field once the data is downloaded from the tool. The results canthereafter be transferred to a USB-memory stick and given to theclient, or further processed in DeviSoft, analyzed and plotted.
Available with 36mm or 38mm brass running gear.

BATTERYPACK

AZIMUTH &DIP READINGSFASTDOWNLOADSEPARATERUNNING GEARRUNNING GEAR WITH COM-PORT
In order to get the best out of your DeviTool instrument you need a running gear.
The Devico running gear can handle up to 450 bars of pressure and meets industry standards.
The running gear fits most 30 mm diameter survey tools on the market. The DeviTool can stay inside the running gear during
download of data because of the special connector port.

TECHNICAL SPECIFICATIONSDIAMETER 36 MM/1.43”

DIAMETER 38 MM/1.50”

Length1900 mm/6.6 ft

2400 mm/7.9 ft

11900 mm/6.6 ft

2400 mm/7.9 ft

Weight7.5 kg/16.5 lbs

8.1 kg/17.9 lbs

9.5 kg/20.9 lbs

10.2 kg/22.5 lbs

Pressure

160 bar/2320 psi

160 bar/2320 ps

450 bar/6525 psi

450 bar/6525 psi
9Core orientation

DeviCore BBT
Efficiency and reliability all in one
The DeviCore BBT is the latest core orientation innovation from Devico. The DeviCore BBT represents an integration of the patent pending
Brilliant Blue™ technology and other proprietary Devico technologies.
The DeviCore BBT employs the same DeviDip system probe technology which has proven to be an industry leader in reliability for morethan 10 years as a part of the DeviDrill, combining electronic coreorientation integration with brand new ergonomic running gear. It wasdeveloped to be user friendly and efficient, keeping the influence on
the daily production rates at a minimum.

TECHNICAL SPECIFICATIONSThe kit includes two DeviCore BBT probes and a core barrel
extension and is ready to be assembled on the drilling equipment
on site. The probes also has a valve system in front securing that
pump-in time is not affected.

Weight [kg/lbs]

3.9/8.6

Diameter [mm/in]*

Length [mm/in]

410/16.1

Magnetic

No

Running gear

Integrated

Inclination accuracy±0.1ºOrientation accuracy±0.5º*Available in BWLTK, NWL, NWLTK, HWL and PWL.

DeviCore BBT comes equipped with the IP67 rated Nomad PDA
system and DeviSoft.Mobile software. The operation follows aclear step-by-step procedure, and one probe can be started anddownloaded while the other is down in the hole.
DeviCore BBT uses three high-accuracy accelerometers, itmeasures inclination, orientation, gravity vector, temperature andbattery status, and offers quality control on the results.
Communication between DeviCore BBT and the PDA is done
wirelessly via Brilliant Blue Technology.

DIP
MEASUREMENTMEASURE
WHILE DRILLINGWIRELESS
LED INDICATOR

The rock core is orientatedat the surface when the twoarrows are aligned.

10True North Azimuth Alignment System

DeviSight

Non-magnetic GPS compass for surface alignment application, providing True North Azimuth, Dip,
latitude and longitude coordinates.
The DeviSight is a portable battery operated system designed tomake and record highly accurate measurements of True Northazimuth, tilt and roll planes at drill sites. The DeviSight is the mostaccurate and easy system available on the market. The instrument
uses GPS carrier phase measurements to accomplish the azimuthalignment. The collar azimuth data can easily be transferred by WI-FI.

TECHNICAL SPECIFICATIONSThe GPS signal is used to record, latitude and longitude coordinates of
the alignment being measured. Highly accurate accelerometers allow
transferring the alignment from a nearby location for e.g. fine tuning
of rig alignment.
The DeviSight rechargeable battery life provides 11-12 hours on a fullcharge, twice the capacity of its closest competitor.

Dimensions [cm/in]

57.6x9.6x4.3/22.7x3.8x1.7

Azimuth Accuracy

0.5°

Dip and Roll Accuracy±0.1°

Azimuth Sampling Speed

10 per sec

Position (Lat/Long)

30 cm

Typical battery life

11-12 hours

Charge time

3 hours

Temperature range-40°C to 70°C

Memory8 GB

Satellite Constellations

GPS and GLONASS (GNSS)

Wi-Fi connection supports

Android, iOS, MS compatible- Record Azimuth, latitude, longitude, inclination, roll, date, time
- Most accurate system available in this category- Final positions stored in a secure format

KIT INCLUDES:• Rugged Electronic device		• Hard case				• Rod mounting braket			• Wi-Fi interface• Rechargeable battery• Charger

11Software

DeviSoft Mobile
DeviSoft Mobile is Devico’s PDA software which operates all Devico
tools. The software will automatically detect which of the Devico tools
is connected. Just plug and play. Direct access to the results after
downloading, a plot function of the borehole in different angles, andpossibilities for multiple surveys without downloading are some of thefunctions supported. The software is translated to several languages.
DeviSoft Mobile comes preinstalled on the PDA delivered by Devico.
Software updates are made available on www.devico.com.

12

Main screen

Online screen

Input parameter

Registration of measurement

Results including quality control

Plot the results immediately

Software

DeviSoft

Borehole software for PC
DeviSoft is software used in directional drilling and traditional
borehole surveying. The software is flexible, and covers the needsof a directional driller or a borehole surveyor, as well as the planningand surveying of blast holes and grouting curtains.
The DeviSoft will at any position in the hole provide you with thesetting of the DeviDrill, such as Tool face, dogleg and the drilling
distance necessary to hit the specified target. You can import 3D
coordinates from your ore body or rock face, calculate the distancefrom the profile to the hole and plot the entire situation.
The planning of curved holes is linked to the capabilities of the drill
tool. The starting position may be specified or calculated. Target
coordinates are specified along with the dogleg rate. The calculation
supplies azimuth, inclination, coordinates, and drill Tool face setting
for specified intervals along the curved section of the hole.
The measured depth, azimuth, and inclination of boreholes may beentered manually, imported from files, or transferred from a PDA.
Various analysis of deviation from corresponding planned holes may
be performed and the results plotted on the screen or listed in tables.

• Plan drill holes for exploration program, blasting,grout curtains, multiple wells with target drillingand directional drilling.
• Calculate, analyze, and report borehole surveys.
System requirements: Windows XP, Windows 7
Hard disk: Min. 50 MB free.

13

Test facility

Devico test facility
Devico has great test facilities for borehole survey tools right out of the workshop.
Two boreholes of 250 meters and 150 meters are accessible all the year. The longest borehole
is standard N-size. The borehole has a varying curvature, from practically straight to sections
with a high dogleg. The borehole is a good challenge for all types of non-magnetic survey tools.
The 140 meter long borehole is made of plastic tubes, and is very
suitable for testing magnetic survey tools. The two boreholes give
Devico and all other interested a chance to test almost all types ofsurvey tools. The test holes have a known trajectory and open exit
points.

14

TECHNICAL SPECIFICATIONS
Length245 / 140 meter

Diameter

60 mm / 50 mm

Location

Melhus, Norway

Constructed

Summer 2009

TECHNICAL SPECIFICATIONS DIRECTIONAL CORE DRILLING
Total weight

87 kg / 192 lbs

Instrument barrel length

1.6 m / 5.2 ft

Total length

5.4 m / 17.7 ft

Instrument barrel diameter

51 mm / 2.01”

Length front section

3.2 m / 10.5 ft

Pumping/latching unit

Standard Longyear NQ™

Weight front section

47 kg / 104 lbs

Landing ringStandard Longyear NQ™

Length rear section

2.2 m / 7.2 ft

Landing indication

Yes

Weight rear section

23 kg / 51 lbs

Core block indicationYes

Bit diameter

NWL

Pull out by-pass valve

Yes

Reamer diameter

NWL

Use of additives

Optional

Tool body diameter

72.0 mm / 2.83”

Dogleg severity (DLS)

0-20º/30 m / 0-20º/100 ft

Core diameter

31.5 mm / 1.24”

Differential pressure

20 bar / 290 psi

Core length

3 m / 9.8 ft

Operating pressure

20 bar + circulation pressure

Length inner assembly

5.4 m / 17.7 ft

Feeding force (max)4500 kg / 9900 lbs

Weight inner assembly

17 kg / 37 lbs

RPM

300-1200

RECOMMENDED PARAMETERS
Dogleg severity, NWL rods

9º pr. 30 m / 9º pr. 100 ft (180 m / 590 ft radius)RPM

300 - 800

Feeding force (Bit weight + sliding force)1500 - 2500 kg

Typical penetration rate

3 m/h / 10 ft/h

Typical production rate

9 - 27 m/12 h / 30 - 90 ft/12 h (50% - 75% of conventional wireline drilling)

TECHNICAL SPECIFICATIONS BOREHOLE SURVEYING TOOLS
Weight [kg/lbs]
Diameter [mm/in]
Length [mm/in]
Memory [readings]
Operational temperature
Pressure [bar/psi]
Magnetic
Running gear
Azimuth accuracy
Typical vertical accuracy
Typical sideways accuracy
Inclination accuracy***
Tool face accuracy***
Temperature
Magnetic vector
Magnetic dip
Azimuth range
Inclination range
Sum inclination
Battery data
Battery capacity**
Data communication
Baud rate
Main area of use* Percent of hole length

DEVISHOT • STANDARD
5.6/12.6 • 8.8/19.4
35/1.38 • 36/1.41 & 38/1.50
1170/46.1 • 1900/74.8
5000 • 1920
-10/+60 °C
450/6525 • N/A
Yes
Integrated •Required
±0.5°
NA
NA
±0.1°
±0.2°
Recorded
Recorded
Recorded
0°-360°-90°− +90°No
2x 3.6V Lithium
1200 • 400 hours
Wireless or Cable • Cable
115000 • 9600 bps
Open hole survey** Battery capacity is measured with 5 sec interval.

DEVICORE BBT
3.9/8.6 (NWL)
57/2.2 (NWL)
410/16.1 (NWL)
1920-10/+60 °C
300/4350
No
Integrated
NA
NA
NA
±0.1°
±0.2°
Recorded
NANA
NA-90°− +90°No
2x 3.6V Lithium
450 hours
Wireless
9600 bps
Core/Tool orientation

DEVIDIP
0.34/0.75
30/1.18
230/9.03
1920-10/+60 °C
NANo
Required
NA
NA
NA
±0.1°
±0.2°
Recorded
NANA
NA-90°− +90°No
2x 3.6V Lithium
450 hours
Cable
9600 bps
Dip measurement/
Tool orientation

DEVIFLEX
20/44.10
40/1.58
4000/157.48
1920-10/+60 °C
300/4350
No
Integrated±0.01° pr station
0.07 % *0.16 % *
±0.1°
±0.2°
RecordedNANA
0°-360°-90°− +90°
Yes
6x 3.6V Nimh
400 hours Rechargeable
Cable
9600 bps
Survey inside casing/drill string*** Accuracy calibrated for temperature range -10°C to +60°C

15

HEAD OFFICE – NORWAY
Devico AS
Drammensvegen 55
Postbox 206
7224 Melhus, Norway

devico@devico.no
Ph. + 47 72 87 01 01

Local representative:

Devico technologies depicted herein are protected internationally by patents and patents pending.

Printed in Canada #PB-EN-2015-01-14

Devico is present in all corners of the World and we invite you
to look on our Devico.com website for the latest details ofyour nearest Devico representative.