111500 1001 DeviShot User Manual

8/13/2019 111500 1001 DeviShot User Manual

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All rights reserved.

This work contains the confidential and proprietary information of Devico AS. Nei-ther this document nor any information disclosed herein shall be reproduced in anyform, or used, or disclosed to others for any purpose, including manufacturing, withoutthe express written permission of Devico AS.

THIS MANUAL IS PROVIDED FOR INFORMATIONAL AND ILLUSTRATIONPURPOSES ONLY. ACTUAL FIELD CONDITIONS MAY VARY THE RESULTS OF

DEVICO AS SERVICES AND PRODUCTS, AND NO INFORMATION, RESULT ORSTATEMENT CONTAINED HEREIN SHALL BE CONSTRUED AS ANY TYPE OFREPRESENTATION, WARRANTY OR GUARANTEE BY DEVICO AS. THE OBLI-GATIONS OF DEVICO AS FOR AND WITH RESPECT TO ITS SERVICES ANDPRODUCTS ARE ENTIRELY SUBJECT TO INDEPENDENT, WRITTEN AGREE-MENTS NEGOTIATED WITH INDIVIDUAL CLIENTS. CONSEQUENTLY, DE-VICO AS SHALL HAVE NO LIABILITY FOR ANYTHING CONTAINED HEREIN.

DeviDrill, DeviFlex, DeviTool, DeviDip, DeviCore, DeviShot, DeviSoft are trade-marks of Devico AS. All other trademarks are the property of their respective owners.

Document nr. 111500.1001Revision number: 1

Last edited: 22/10/2013

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Certification

Devico AS certifies that this product met its published specifications at the time of

shipment from workshop. Devico AS further certifies that its calibration measurementscomplies with and are traceable to the Company Standard, to the extend allowed bycompanys calibration facility, and to the calibration facilities accepted in the drillingbranch to measure borehole inclination and azimuth as well as other related parameters.

Warranty

This Devico AS product is warranted against defects in material and workmanship fora period of one year from the date of shipment. During the warranty period, DevicoAS will, at its option, either repair or replace products, which prove to be defective.

For warranty service or repair, this product must be returned to a service facilityat Devicos workshop, Norway. Buyer shall prepay shipping charges to Devico AS andDevico AS shall prepay shipping charges to return the product to Buyer. However,Buyer shall pay all shipping charges, duties, and taxes for products returned to DevicoAS from another country.

Devico AS warrants that its software and hardware designated by Devico AS for usewith an instrument will execute its programming instructions when properly installedon the instrument. Devico AS does not warrant that the operation of the instrument,or software, or hardware will be uninterrupted or error free.

Limitation on warranty

The foregoing warranty shall not apply to defects resulting from improper or inadequatemaintenance by buyer; buyer supplied software or interfacing, unauthorized modifica-tion for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. DEVICO AS SPECIFI-CALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY ANDFITNESS FOR A PARTICULAR PURPOSE.

The remedies provided herein are the Buyers sole and exclusive remedies. Devico ASshall not be liable for any direct, indirect, special, incidental, or consequential damages,whether based on contract, tort, or any other legal theory.

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Contents

1 Introduction 4

1.1 Borehole surveying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.2 Devico survey tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 The DeviShot kit 52.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.2 The survey tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.3 PDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.4 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.5 DeviSoft.Mobile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Borehole surveying methods 83.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.2 Inclined boreholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.3 Open boreholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.4 Horizontal boreholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.5 Upward boreholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Operation of the survey tool 104.1 Preparation before a survey . . . . . . . . . . . . . . . . . . . . . . . . 104.2 Start the survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.3 During the survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.4 Download the survey data . . . . . . . . . . . . . . . . . . . . . . . . . 134.5 What are the results telling me? . . . . . . . . . . . . . . . . . . . . . . 144.6 Quality control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164.7 Start coordinates / magnetic declination . . . . . . . . . . . . . . . . . 174.8 Export survey data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.9 Change settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5 DeviShot maintenance 195.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195.2 Quick calibration check . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6 Trouble shooting 206.1 Survey tool not connecting . . . . . . . . . . . . . . . . . . . . . . . . . 206.2 Inaccurate results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.3 PDA error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

1 Introduction

1.1 Borehole surveying

This user manual is a guide to the successful operation of your survey tool. The usermanual contains important information which is necessary for understanding the oper-ation principle, the characteristics and applications of use for your valuable boreholesurvey tool.

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Borehole surveying, or deviation surveying, is the measurement of a boreholes di-rection under the surface in order to be able to calculate the boreholes trajectory.Boreholes can deviate considerably from the original plan, depending on factors like

rock formations, drilling parameters and length of the borehole.

1.2 Devico survey tools

Devico manufacture survey tools that cover most applications for diamond core drilling,including magnetic and non-magnetic survey tools. The survey tools are easy to useand rugged electronic multishot survey tools.

DeviShotYou are now reading the user manual for the DeviShot survey tool. The DeviShotis a magnetic multishot survey tool ment for surveying in front of the drill bit orin open holes. The survey tool is the most accurate survey tool in rock formationswhere there is no magnetic disturbance.

The other survey tools Devico can offer are:

DeviFlexThe DeviFlex is a non-magnetic borehole survey tool that is used inside the drillstring. The survey tool is not affected by magnetic disturbance and can be usedin all types of rock formations. The DeviFlex uses accurate and reliable straingages to measure the direction of the borehole.

DeviCoreThe DeviCore is an electronic core orientation system for accurate orientation ofrock cores. The core orientation system has minimal impact on drilling time anddrilling procedures. All Devicos borehole survey tools use the same software, sothe learning curve when changing from one system to another is minimal.

We are happy that you have purchased a Devico survey tool and we hope you willbe satisfied with the use and results youll get from it. If you have any trouble, pleasedo not hesitate to contact the Devico support team! We can be contacted by e-mail [email protected].

2 The DeviShot kit

2.1 Overview

The DeviShot kit consists of two main parts, the survey tool itself and a PDA thatis used to operate and present the borehole survey data. The main component of thesurvey tool is connected to a battery pack at the rear to get power, and a shock absorberat the front to protect the survey tool from impacts.

To connect to the DeviShot survey tool, hold the tool vertical up for approximatelytwo seconds. The LED light blinks one time. Then move the tool back to horizontal .The software program DeviSoft.Mobile should automatically detect that it is connectedto the survey tool and you are ready to start your survey.

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2.2 The survey tool

The DeviShot is a magnetic multishot survey tool. The electronic unit consists of

three magnetometers, three accelerometers and a temperature sensor. They measurethe magnetic field and gravity where the tool is placed along with the tools internaltemperature. The sensor data obtained during a survey is stored in the internal memoryof the tool and can be downloaded when the tool is connected to the PDA.

The DeviShot is designed for water pressure up to 300 bars and it is calibrated fortemperatures between -5C and 65C.

LED light status0.5 sec DeviShot is trying to connect to PDA2 sec DeviShot and PDA is connected5 sec or more A survey has started and the DeviShot is collecting data

2.3 PDA

The PDA that is used to operate the survey tool is Trimble Nomad. It is IP67 ratedand is impervious to water and dust. It has a rugged casing and runs Windows Mobile

6.5. The PDA has DeviSoft.Mobile installed when it is shipped from Devico. Devi-Soft.Mobile will be explained in more detail in section 4.2.

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To turn on/off the screen use the green button. Use the belonging pen to operate thetouch screen. More information about the Nomad is available on Trimbles homepage:www.trimble.com

2.4 Battery

The DeviShot is powered with a 7,2V lithium battery pack. The DeviShot can runapp.1200 hours continuously before the batteries need to be replaced.

It is recommended to insert new batteries if the DeviShot has not been used for along time, or the voltage drop below 6.4 Volt. The voltage can be checked in the OnlineWindow on the PDA.

The battery can be changed by opening the back end of the battery pack. Use the24 mm key to unscrew the end plug. The positive end should face towards the survey

tool. The DeviShot is protected against incorrect polarity. When the battery pack isnot in use, the plastic cap should be used to cover the male threads to avoid drainageof the battery.

2.5 DeviSoft.Mobile

DeviSoft.Mobile is a PDA program used to operate the DeviShot tool and show theborehole survey data. DeviSoft.Mobile is installed on the PDA when it is shipped fromDevico. If you for some reason need to reinstall the program, it can be installed fromthe memory stick found in the transport box.

You should also from time to time have a look at Devicos webpages to see if thereare updated versions of DeviSoft.Mobile.

Reinstallation procedure:Close the DeviSoft.Mobile program on the PDA. Go to Start Settings System Remove Programs and uninstall DeviSoft.Mobile.

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Go to Start Programs File Explorer Program Files Devi-Soft.Mobile Dataand delete or remove the files in this folder.

Connect the PDA to the computer with the USB cable and open the Devi-Soft.Mobile installation file. Follow the instructions on the screen.

3 Borehole surveying methods

3.1 Overview

There are several ways to measure the deviation of boreholes, and what method that isbest for you depends on what sort of borehole you have.

But; for all boreholes we want to place the survey tool at a given depth, calleda survey station. At that survey station we want to take a measurement, sometimescalled a survey shot, to get the azimuth and inclination. The azimuth and inclination,together with the depth are used to calculate the borehole trajectory.

In the next sections, different types of boreholes have been described with recom-mended methods of surveying. The recommendations may not always be optimal. Forinstance, if you have a very short inclined diamond drilled borehole, the section de-scribing open boreholes might be of interest.

3.2 Inclined boreholes

With the DeviShot, inclined or vertical diamond drilled boreholes are easiest and safestsurveyed throughout the drillbit. The survey tool is lowered or pumped through thedrill bit to avoid magnetic disturbance from the drill string. The survey tool is extendedwith non-magnetic aluminium rods and a landing collar. The landing collar makes surethe DeviShot survey tool assembly stops at the drill bit. The landing collar assemblyhas a spear head for attaching the overshot. The survey is performed by pulling outthe drill string, but after a section of the borehole is measured the survey tool can beretracted with the wireline.

The extension alu-rods should be long enough to keep the survey tool a minimumof 3 meter in front of the drill bit. Remember to pull out the drill string a safe distanceso the survey tool does not hit the bottom of the borehole. In the case where you have3 meter alu-extension rods, the drill bit should be pulled minimum 5 meter away fromthe bottom, since the survey tool is 1.4 meters long.

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It is important to check that your landing collar assembly fits your drill string size.The landing collar assembly is available in standard BQ, NQ and HQ size. Other sizescan be custom made upon request.

3.3 Open boreholes

If the boreholes are inclined or vertical the survey tool can be lowered down the boreholeby gravity. The easiest way to survey is connecting the survey tool to a wire or ropeand slowly lower it down the hole.

Blast holes, and many other boreholes where the drilling equipment has left the site,can be measured using open hole surveying methods. If the borehole has casing, youcan not expect to get correct results for the azimuth in the cased section.

To measure the depth of the survey tool in the borehole, there are two differentways. The simplest way is to mark the wire or rope at the surface. You can use ameasuring tape to find the depth on the rope or wire, and then mark it with spraypaint or pieces of tape. The other way is to use a wire counter when you are lowering

the rope or wire down the borehole. The wire counter is normally preferred if you havelong boreholes or need high accuracy.

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3.4 Horizontal boreholes

If you are drilling diamond core drilling boreholes, you should make an adapter for your

innertube instead of using the landing collar described in the Inclined Boreholes section.It is still necessary to use 3 meter alu-extension rods between the instrument and theinnertube or drill string. When you are using the innertube with latching system, youcan be sure that the instrument has landed and will stay in the correct position sincethe latches lock the innertube in position.

If you are measuring shorter boreholes, the survey tool can be attached to a stiffnon-magnetic pipe, for instance a 1 (25 mm) PE-pipe commonly used for water supply.With the pipe you can push the survey tool into the borehole. Mark the pipe with spraypaint for every survey station you want.

Grout curtains in tunnels are often surveyed this way. It is normal to start thesurvey procedure at 0 meters and measure into the borehole. Remember that you can

survey several boreholes without downloading the data between each borehole if youhave multiple boreholes.

3.5 Upward boreholes

Upwards boreholes are found inside mines and tunnels, and they can be made fordifferent applications like grouting and installation of rock bolts.

The survey tool must be placed in front of a very stiff pipe. It is usual to use the drillstring to push the survey tool into the borehole. Because the drill string is magnetic,alu-extension rods need to be added in front of the drill string. Devico recommends touse at least 3 meters of non-magnetic extension rods between the survey tool and drill

string. Adapters can be made to fit the alu-extension rods to the drill rods.The survey tool is pushed into the drill hole with the drill string. It is very important

to not push too far. Remember that the survey tool is adding some meters to the drillstring. The drill rods are counted to see how many meter the survey tool is inside theborehole.

Look at section 3.4 for alternative options.

4 Operation of the survey tool

4.1 Preparation before a surveyBefore you go out in the field to do a survey, test the survey tool. Do a dummy surveyso you know that the survey tool is working. Make sure that the PDA is fully charged,

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that the DeviShot survey tool has sufficient battery power and that the O-rings andthreads are greased and clean.

4.2 Start the survey

Turn on the PDA. DeviSoft.Mobile should appear on the screen. If you do not see theprogram, go to the Windows Start menu and open the DeviSoft.Mobile program.

The DeviShot is ready to use when you take it up from the box. To connect theDeviShot to the PDA, turn the DeviShot vertical up for 2 seconds to activate theBluetooth antenna, then turn the tool back to horizontal position. The tool will blinkone time in vertical position and then start blinking two times pr second in horizontalposition until it is connected. The DeviShot will go back to sleeping mode after 30seconds if it is not connected to the PDA.

When the program is open, the header will show after a few seconds that the PDA isconnected to the DeviShot tool. If not, the header will tell you No tool connected. Ifyou are not able to get contact with the survey tool, please see Section Trouble shootingin this user guide on how to solve this problem.

To start a survey, press the Survey button. In this window you can choose:

Survey nameHole name is as default set to the day and time that the survey starts. The namecan be changed by pressing the ... button next to the text field and type in anew name.

Start delayIf you choose delayed start, the survey tool will start running, but it will not startto log any stations before the delayed start time has passed. This option can be

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used in situation where it will take some time before the survey tool is at theright place, i.e. you have a long horizontal borehole where the pump-in time isexcessive.

Time intervalThe Time interval sets the logging interval of the survey tool. The maximumsurvey time will depend on the survey interval time. Survey interval time of 5sec will give a maximum of 2 hours and 40 minutes to do the survey. If the Timeinterval is set to 30 seconds, it will give you a survey time of 16 hours.

Oriented rodsOriented rods is used under special circumstances when you want to measurevertical boreholes with magnetic disturbance, i.e. short vertical boreholes withcasing. The 0-toolface mark has to be aimed against a known direction, andthe survey tool must be lowered down in the borehole with special rods to avoidrotation.

Press the start button and the survey tool and the PDA synchronize. After a fewseconds, a message will tell you that it is safe to disconnect the survey tool from thePDA. Connect the shock absorber to the front of the survey tool and run the surveytool into the borehole. See section 3 for different ways of setting up the survey tool.

4.3 During the survey

When the survey tool has synchronized with the PDA, and you have pressed OK, screwthe front shock absorber on before you run the survey tool into the borehole.You choose the correct Start depth by pressing the plus sign on the right side of

the Depth button. If your start depth is bigger than your chosen Interval, the programassumes that you will survey out of the borehole. If that is wrong, there is an optionin the Menu to change survey direction.

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During the survey, press Mark when the survey tool is exactly at the position youwant to measure. Make sure the depth on the PDA screen corresponds to the depth inthe borehole. The Mark button will change from red to green when it is pressed. Donot move the survey tool when the Mark button is red. If you press mark at the wrongplace, press Menu and Undo the last survey station.

When you have finished the survey, press Stop.

4.4 Download the survey data

When you are finished with the borehole survey, press End and pull out the survey tool.Connect the PDA to the survey tool with the com. cable. Wait until you see that thesurvey tool has connected. The Load button will change from disabled to enabledwhen it connects. Press Load and wait until the downloading process has finished.

All the marked survey stations will be transferred to DeviSoft.Mobile. The survey

depth from the PDA will be combined with the appropriate readings from the DeviShot,and based on those data, the borehole trajectory will be calculated.

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4.5 What are the results telling me?

In the result window, you will find several columns with different headers. You can

scroll sideways by using the sideways scrollbar, and up or down by using the verticalscrollbar.

DepthThe depth is the depth you typed in when you pressed the mark button. It should

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be as accurate as possible, but it is more important that the depth is accurateif the borehole is deviated than if the borehole is straight. On how to actuallymeasure the depth, see section 3.1.

AzimuthAzimuth is the horizontal angle measured clockwise from the magnetic north. Ifthe survey tool points towards the magnetic north, the azimuth will be 0. Formagnetic survey tools the azimuth should normally be corrected for magneticdeclination, see section 4.7, or adjusted to any local coordinate system. Theazimuth will be a number between 0 and 360. Other types of magnetic materialscan interfere with the earths magnetic field and can lead to wrong azimuth results.

InclinationInclination is the angle between the horizontal plane and the direction of thesurvey tool. Devico survey tools use +90 as vertical up, 0 is horizontal and -90

is vertical down.

Northing, Easting and ElevationNorthing, easting and elevation are the coordinates of the borehole and is cal-culated from the depth, azimuth and inclination values. DeviSoft.Mobile usesa minimum curvature method to calculate the coordinates. To get the actualborehole trajectory, collar coordinates need to be typed in, see section 4.7.

Gravity ToolfaceThe gravity toolface value tells you which way the survey tools high side/low sidewas pointing in the borehole. If the gravity toolface is 0, it means that the blackdot on the front of the survey tool is pointing upwards. The gravity toolface hasa range from 0 to 360. A survey tool that is in an absolutely vertical boreholewill not have any high side/low side, which means the gravity toolface will bearbitrary.

Gravity vectorGravity vector refers to the gravity of the earth, and is approximately 9,81 m/s 2.This value can be used to check if the survey tool was moved when the surveystation was measured. If the survey tool was accelerated in any direction during

the shot, this value will differ from 9,81 m/s2

and you should consider if you cantrust all the values for this station.

Magnetic vectorThe magnetic vector refers to the size of the magnetic field where the survey tool isplaced. It will be the size of the earths magnetic field if there is no other magneticmaterials present that can disturb. The magnetic field size varies depending onwhere on the earth you are located. The magnetic vector can help you to decideif your azimuth is good or not by comparing it to the size it should normally bein the area where you are surveying boreholes.

Magnetic inclinationThe magnetic inclination is the angle made by a compass needle with the hori-zontal plan, and in environments where there is no magnetic disturbance it will

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be the inclination of the earths magnetic field. The earths magnetic inclinationvaries depending where on the earth you are located. The magnetic inclinationvalue can help you to decide if your azimuth is good or not, by comparing it to

the value it should be in the area where you are surveying boreholes.

Magnetic toolfaceMagnetic toolface is in many ways similar to the gravity toolface, except the mag-netic toolface is using the magnetic field instead of the gravity field as referencesystem. If the magnetic toolface is 0, the black dot points in the same directionas the magnetic field. The magnetic toolface can be used for orientation of thesurvey tool in vertical boreholes where it is not possible to use the gravity toolface.

BatteryBattery shows the voltage of the survey tool battery pack. See section 2.4 formore info.

TemperatureIt shows the survey tools internal temperature at the time when the survey shotwas taken.

4.6 Quality control

A automatic quality control can be used to check if the gravity vector, magnetic field

size and magnetic dip is within accepted limits. All survey stations that are markedwith green have been accepted, and all survey stations that are coloured red have oneor more parameters outside the set limits.

Except for the gravity vector, the quality parameters will change depending onwhere you are on the earth. You can change the default values by pressing Utility Quality control from the main menu and change the values manually based on localsources about magnetic field values.

If you have no information about the local geomagnetism, you should bring thesurvey tool to an area nearby with no magnetic disturbance and do a dummy surveythere. After you have taken a set of measurements and downloaded the results, youpressQuality control in the Results window, and chose Copy to default settings.

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4.7 Start coordinates / magnetic declination

Start coordinates or collar coordinates are needed to calculate the correct borehole

trajectory. In open air, the start coordinates can be found using an accurate GPS. Insidemines and tunnels, land surveying equipment is needed to find the start coordinates ofthe borehole. The start coordinates should be three numbers telling you the Northing,Easting and Elevation of the collar of the borehole and the numbers must be given ineither meter or feet in the coordinate system you are working in.

The DeviShot survey tool should be used in environments that are not affected bylocal magnetic disturbance. The survey tool will then show the direction it is pointingreferring to magnetic north as 0 azimuth. The results should be adjusted for themagnetic declination before the borehole trajectory is calculated. If you are using alocal coordinate system that is not using true north as the North axis, you will need to

adjust further to align the measured direction to your coordinate system.The magnetic declination varies around the world. To find the magnetic declination

in your areas, there is several resources to be found on internet. When you know themagnetic declination in your area, you should add the value to the magnetic north if thedeclination is east, and subtract if the magnetic declination is west ((source Wikipedia)).

Collar infoUnder Collar Info you have the possibility to add information about magneticdeclination and start coordinates for the borehole. When you press save, Devi-Soft.Mobile will use the values you have entered to calculate the borehole trajec-

tory you see in the result window.

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4.8 Export survey data

To create a survey report, you can use the Export button. This will give you the

possibility to export the survey results to several file formats, where the Word-file andthe PDF-file are the most readable formats. Unless you change it, the file will be storedwith the name you gave it when you started the survey. The file will be stored onthe PDA memory. You have the possibility to change the name, as well as change thestorage directory.

If you choose text file the survey results will be saved as a plain text document thatshould be easy to import into almost every system.

Devico has a program called DeviSoft that can import survey data from the PDA.This program has a few more options, i.e. for changing depths and deleting stations,and merging surveys together if that is needed. The program can be downloaded from

www.devico.no.Well done so far! Please read the next section as well, so you can keep the DeviShot

survey tool for a long time.

4.9 Change settings

To change from meter to feet or opposite - go to Utility Units and change frommeter to feet there.

To change from Celsius to Fahrenheit - go to Utility Units and change frommeter to feet there.

To change program language, close the program and go to Windows Start Menu

Settings System Regional settingsand choose country. Currently supportedlanguages are English, French, Spanish, Turkish, Norwegian and Swedish.

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Annually

Send the tool back to your Devico distributor for a recalibration to keep it

in top shape.

When your DeviShot survey tool is not in use, it must be stored away from directsunlight in a dry and temperate environment.

5.2 Quick calibration check

We recommend that you do a quick check of the calibration from time to time, to verifythat the DeviShot tool is performing within the given specifications. There are twosimple checks that can be done, one for azimuth and one for inclination.

Azimuth checkTo check the azimuth in field, we recommend to mark two points with somedistance apart in the field. You should know the exact coordinates of those twopoints and be able to calculate the azimuth between them. Put the DeviShot toolin a frame that has no iron, or other materials that affects the magnetic field,and aim the DeviShot tool from point A to point B. Take a reading. Turn theDeviShot 180 around so that it aims from B to A, and repeat the procedure.The two results should be 180 degrees different.

Inclination checkWhen you are checking the inclination, it is best to start with an online-check.Connect the PDA to the survey tool, press UtilityOnline. Move the surveytool to vertical position, 45 position, and horizontal position and make sure theinclination arrow at the PDA screen follows your movement.

To check the DeviShot survey tool in more detail, do similar to the azimuthcheck. Put the survey tool in a frame, take a measurement, turn the surveytool 180 around , and take a new measurement. The absolute value of the twomeasurement should be almost the same, that means only the plus/minus signshould be different from each other. The difference of the absolute values shouldbe equal or less than the tool specifications.

6 Trouble shooting

6.1 Survey tool not connecting

BatteriesCheck that the battery is inserted the right way. Check that the batteries bothon the survey tool and in the PDA has power. Check that the battery poles arein contact with the end springs in the battery house. If the wrapping around thebattery has moved and is covering the battery poles, remove the wrapping fromthe ends of the battery. Clean the threads of the battery house, and correspondingfemale threads in the main body of the DeviShot tool. See section 2.4 on how tochange batteries and measure the voltage of the batteries.

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PDAIf the the DeviShot does not connect to the PDA, check that the PDA is usingthe right type of communication. Go to Utility Communicationand choose

the appropriate communication type.

If the default Bluetooth communication is not working, you can try to connectwith cable communication. Choose Serial communication on the PDA, and con-nect with the cable found the transportation box.

6.2 Inaccurate results

If you suspect that the survey results you have are inaccurate or wrong, you shouldfirst check the gravity vector and magnetic vector / magnetic dip for variation over the

depth. Gravity vector variation above an average value 0.03 indicate movement ofthe tool in the borehole and will contribute to inaccurate results. The solution is towait longer before you press the Mark button, so that you are sure the survey tool hasstabilized in the borehole.

You should also look for variation in the Magnetic vector and Magnetic dip. Varia-tion here indicates that the survey has been done in magnetic rocks or close to man-mademagnetic fields that will give wrong azimuth results. The inclination will still be goodsince it is not affected by magnetic fields. For boreholes with just a few stations thatare affected with magnetic disturbance, you can ignore those stations. There is no wayto compensate for magnetic disturbance in boreholes that are heavily influenced with

magnetic disturbance.If the results are totally wrong, you should do a calibration check, see section 5.2.

If you are getting a negative answer to that test, the survey tool should be sent backto your nearest distributor for a more detailed check.

6.3 PDA error messages

DeviSoft.Mobile has different error messages.

Cannot open project. Old version.The DeviSoft.Mobile version you have has been updated, but there are still some

old files in the data folder that contains data files. You should close the Devi-Soft.Mobile program and open Start File Explorer. Go to My Device Program Files DeviSoft.Mobile Data. You can delete or copy the fileshere to another folder.

Communication errorThis error is most likely because of a synchronizing error with the storage card.Go toStorage Card DeviSoft.Mobile Dataand delete or copy the fileshere to another folder.

Casting exceptionThis error is most likely because some erroneous data has been transferred fromthe survey tool to the PDA. Try to move the cable and clean the communicationport, and repeat what you were doing.

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The stop command did not get a well formed responseThe communication between the PDA and survey tool is not as good as it shouldbe. Try to move the cable and clean the communication port, and repeat the

procedure you were doing.

Online function work, but not able to download data after a surveyThe backup battery can be empty. The instrument needs to be sent back for acheck.

To reset the PDA, hold down the on/off button for 5 seconds. Make sure you havepulled out the USB-cable if you need to restart the system. If the system is totallyfrozen, you can also take out the batteries for 2 minutes. This will turn the PDA off.

111500 1001 DeviShot User Manual

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Transcript of 111500 1001 DeviShot User Manual