Frequently Asked Questions
Filter by product type:
Why aren’t H and P-size centralizers available for the DeviGyro OX Mini?
The DeviGyro OX Mini is designed specifically for surveying and retrieving core tubes in B and N-size drill rods only. The small design of the OX Mini assembly does not support the weights associated with larger core tubes. The DeviGyro Overshot Xpress (OX) survey solution on the other hand is designed specifically for surveying and retrieving core tubes in N, H and P- size rods. Capable of pulling heavier tubes such as H and P-size.
What drilling applications is the DeviGyro OX Mini suited for?
The DeviGyro OX Mini is a purpose-built overshot surveying solution for B and N-size diamond core drilling applications.
What if the core tube gets stuck whilst surveying out with the DeviGyro OX Mini?
Like with the Overshot Xpress (OX) assembly, the shear pin we use in the OX Mini assembly is designed to break under a specific amount of pressure. Preventing the risk of having to cut the wireline and leave the tool down the hole if the tube is stuck. Only the latch unit of the OX Mini will remain in the hole when this pin breaks. The survey can still be completed also.
Does the DeviGyro OX Mini support ADE (Automatic Depth Estimation) Mode?
Yes, ADE Mode is available with all DeviGyro survey solutions including the OX Mini. Simply conduct the latest update of the DeviGyro App, and you will have ADE mode as an option to select from.
How long does it take to survey a 100m drill hole with the DeviGyro OX Mini?
Assuming a moderate average survey speed of approx. 60m/min, a 100m survey takes about 4 minutes. A key point here is that by running the OX Mini when retrieving core, surveying becomes part of the drilling cycle, and therefore survey time does not interrupt drilling productivity.
Is ADE available with survey instruments other than the DeviGyro?
No, at this stage ADE is only provided for the DeviGyro technology.
What does ADE cost?
Nothing, just like DeviCloud it is free for all DeviGyro customers.
Do I have to return my DeviGyro to be upgraded to get ADE mode?
No. ADE is an innovative software development harnessing the DeviGyro instruments’ on-board sensors, and new proprietary algorithms developed by Devico. No hardware updates are required. All you have to do is conduct the latest update of the DeviGyro App to get ADE mode.
How do I get ADE functionality for my DeviGyro?
Simply conduct the latest update of the DeviGyro App, and you will have ADE mode as an option to select from.
How are surveys conducted in ADE mode differentiated from surveys conducted with a DeviCounter?
When viewing a survey’s QA Report in DeviCloud, the Survey Details tab will indicate when ADE has been used or not, and when the DeviCounter has been used or not. In addition ADE surveys are identified in DeviCloud as Stationary surveys and will. DeviCounter surveys are identified as Continuous.
What DeviGyro running gear options are required when utilizing ADE mode?
All DeviGyro running gear options with rotating/helix centralizers. RG40 Standard, RG30 Helix, Overshot Xpress (OX).
Are the internal survey tools of the DeviHead G2 interchangeable between running gear sizes?
Yes, with DeviHead G2 the internal survey tools are interchangeable.
Do we need core barrel extensions to run the DeviHead G2 core orientation system?
No, the DeviHead G2 is designed to fit inside a core barrel head assembly, so no extensions are required.
When was the original DeviHead innovation released to the market?
The original DeviHead (N-size) was released to the market in 2017.
What length is the RG30 Helix assembly?
Approximately 1.3m when assembled without any of the 4 extension/sinker bars provided in the kit, 1.9m when assembled with 2 extension/sinker bars and 2.5m when assembled with all 4 extension/sinker bars.
What are the key differences between DeviGyro RG30 Slimline and DeviGyro RG30 Helix?
The RG30 Slimline is not designed for use with wireline, it is commonly used in combination with a DeviRodder for surveying in short, open hole environments such as drill and blast, where up-holes and horizontal holes are common. Hence it is built using lightweight materials and has a short body.
Though the RG30 Helix is also compatible with the DeviRodder it is specifically designed for in-rod, downhole wireline surveying. Hence it has been built with heavier materials and a longer body, containing a top sub, swivel, bullnose, and centralizers.
Can we survey vertical holes with the DeviGyro RG30 Helix?
Yes, the advanced DeviGyro technology precisely detects and quantifies any deviation the instrument is subjected to as it traverses the drill hole. Providing highly accurate, repeatable data at any angle, including vertical. It is preferable to set the centralizers to non-rotating mode for vertical holes.
What is provided in the DeviGyro RG30 Helix running gear kit?
The DeviGyro RG30 Helix running gear kit includes a pressure barrel, bull nose, top sub swivel, two RG30 Helix centralizers, four extension/sinker bars and two v-stands.
What is the purpose of dual functionality centralizers?
The helix survey method provides optimal accuracy in most situations, however in some situations, non-rotating centralizers may be preferred, for instance in vertical holes.
Is the DeviGyro RG30 Helix suitable for A-size diamond core drilling?
Yes, the DeviGyro RG30 Helix will work in A-size wireline drill string (35-37 mm).
Is the DeviGyro RG40 Standard North Seeking?
No, the DeviGyro is not north seeking. It is a high precision, continuous rate gyro using north seeking principles and proprietary algorithms to determine the drill hole path from a known direction. Most continuous north seeking gyros operate in the same way. They determine a start direction and then measure the “rate“ of change from the initial reference.
What downhole survey tools do Devico have that are compatible with V-wall rods?
The DeviGyro RG40, DeviGyro Overshot Xpress and DeviShot products are available with V-wall compatible centralization.
What downhole survey tools do Devico offer for diamond core drilling?
DeviGyro RG40, DeviGyro Overshot Xpress, DeviFlex RAPID and DeviShot.
What is the difference between calibration and calibration check?
Instrument calibration is performed under laboratory conditions in highly specialized and customized calibration rigs. Based on the data collected by the instrument, and the precise knowledge of the sequence, calibration constants are derived. A calibration-check is a simpler procedure where the objective is to verify that the instrument is within acceptance thresholds and performing optimally.
Is it imperative to have a DeviHealth kit for DeviGyro, or optional?
No, it is not imperative, it is optional. DeviHealth is available to DeviGyro customers simply for enabling them to conduct onsite calibration-checks, whenever required.
How long does it take to complete a DeviGyro calibration-check with the DeviHealth system?
Approximately 20 minutes in total. With the first couple of minutes and the last 10 minutes not involving operator handling.
What is the total weight of the DeviGyro RG40 assembly when using these centralizers?
Either 15.9kg/35.14lbs or 16.6kg/36.64lbs, depending on the wheel size.
What is the total length of the DeviGyro RG40 assembly when using these centralizers?
1.6m/5.24ft (including the spear-head point).
Are the RG400 Centralizers included with an DeviGyro RG40 Standard kit?
No, RG400 Centralizer kits are an ancillary item and supplied on request.
What is the total length of the RG40 Standard with the Orientation Mule shoe attached?
1.95m/6.39ft (including the spear-head point).
Does the Orientation Mule-Shoe come included in the DeviGyro and DeviShot kits?
No, Orientation Mule-Shoes are ancillary items and supplied on request.
What is High-side toolface?
How long does it take to activate a DeviShot instrument, from opening the case?
The time that it takes to turn on the Android Phone and select the DeviShot app, plus approximately 5 seconds to connect to the Instrument. Ready to start survey.
Is the DeviShot compatible with the DeviCloud data management system?
Yes, DeviShot, DeviGyro, DeviFlex RAPID and DeviAligner instruments are all DeviCloud compatible.
What is the Brilliant Blue Technology (BBT) activation system and how does it work?
BBT is our wireless communication system. It is a Bluetooth signal that is sent from the internal logging tool, through the pressure barrel and to the handheld unit. This replaces the conventional method of cables or having to open the assembly to achieve connect and communication
Is the DeviCounter component permanently mounted or removeable?
The DeviCounter component is securely mounted and designed to remain in place, however removable in case an upgrade or swap out is required. Saving the hassle of having to freight the complete DeviRodder unit.
How do we charge the DeviCounter built into the DeviRodder?
Each DeviRodder unit comes equipped with a high-quality power bank that has a capacity of 15000mAh. Making it convenient to charge the DeviCounter component when needed.
Can we do multi-shot surveying when using the DeviRodder, or does it only support instruments with continuous survey mode?
Yes, the DeviRodder supports survey instruments with continuous and or multi-shot surveying modes.
What rod sizes is the DeviHead G2 compatible with?
NWL and HWL.
Is an handheld device included in the DeviHead G2 kit?
Yes, an Android Handheld device is included with every Devico borehole survey solution.
What running gear is provided with a DeviGyro RG40 Standard kit?
A DeviGyro RG40 Standard Kit includes a DeviGyro Instrument Kit (Instrument and Android phone), an RG40 Running Gear kit (pressure barrel, centralizers, bull nose, swivel and spear head/wire adapter and 3 v-stands) and a DeviCounter Kit (DeviCounter, Clamp and Android phone).
Is the DeviGyro RG40 Standard compatible with V-Wall rods?
Yes, it is compatible with standard, V-Wall and W-Wall coring rods.
How long is the DeviGyro RG40 Standard when fully assembled?
Compact (without extension bars) 1.5m. Extended (with extension bars) 2.2m.
Can we survey vertical drill holes with the RG30 Slimline?
Yes, the advanced DeviGyro technology precisely detects and quantifies any deviation the instrument is subjected to as it traverses the drill hole. Providing highly accurate, repeatable data at any angle, including vertical.
How much does the RG30 Slimline weight when assembled with the DeviGyro?
What running gear is provided with a DeviGyro RG30 Slimline kit?
A DeviGyro RG30 Slimline Kit includes a DeviGyro Instrument Kit (Instrument and Android phone), an RG30 Running Gear kit (pressure barrel, bull nose, top sub and 2 v-stands) and a DeviCounter Kit (DeviCounter, Clamp and Android phone).
How long does it take to survey a 100m drill hole with the DeviGyro Overshot Xpress (OX)?
Assuming a moderate average survey speed of approx. 60m/min, a 100m survey takes about 4 minutes. A key point here is that by running the OX when retrieving core, surveying becomes part of the drilling cycle and therefore survey time does not interrupt drilling productivity.
Can you run a survey without retrieving the core tube?
Yes. Though for this process we recommend using the spear cap (provided in OX kit) or removing the overshot latch unit prior to doing so, to mitigate the risk of accidentally latching to the tube.
What is the contingency plan for a stuck tube?
The shear pin we use in the OX assembly is designed to break under a specific amount of pressure (approx. shear strength 17,5 kN). Preventing the risk of having to cut the wireline and leave the tool down the hole if the tube is stuck. Only the latch unit of the OX will remain in the hole when this pin breaks. The survey can still be completed also.
Can the DeviGyro be used without the DeviCounter?
Yes, it can. In that case you have to take stationary readings at specified depths. Whenever possible, however, continuous surveys are recommended. They give better accuracy because they have the benefit of precise depth information from the DeviCounter.
How long does it take to survey a 100m drill hole with the DeviGyro?
Assuming a moderate average survey speed of approx. 60m/min, a 100m survey takes about 4 minutes. In addition, if you are conducting core drilling and running the OX assembly surveying becomes part of the drilling cycle and therefore survey time does not interrupt drilling productivity.
What is the maximum operating speed for the DeviGyro?
Although the DeviGyro has been successfully tested at speeds of 180m/min, the maximum recommended operating speed is
What is the maximum operating speed for the DeviFlex RAPID?
The maximum recommended operating speed for the DeviFlex RAPID is 45 m/min.
What sizes does the DeviFlex RAPID support?
B, N, H, P (plus the different wheel sizes).
Can I run my DeviFlex in continuous mode?
Yes, if you have the DeviFlex Rapid. We have a special offer to effectively upgrade Standard DeviFlex units to DeviFlex Rapid, including DeviCounter and android device.
How much savings can be expected from using DeviDrill?
Savings can come in may forms, including reduction in drilling meters leading to direct time & cost savings and indirect cost savings due to reduced core handling and logging, fewer drill sites leading to cost & environmental savings, and consistent target accuracy leading to cost savings. If you have a project where you believe directional coring could be used, we recommend contacting us. We prepare directional proposals at no cost, making it easy to see the benefit of DCD in your specific case.
How sharply can the drill hole be turned when utilizing the DeviDrill?
We recommend an average turn of 9° per 30m drilled, or a radius of about 200 meters, to make the directional drilling efficient while avoiding excessive wear on the drill string.
Do we require additional mud pumps, drill strings or other equipment to use the DeviDrill?
No, the DeviDrill fits directly on the standard drill string and operates with similar flow rates as the regular N-sized wireline core barrels. During drilling the DeviDrill is rotated by the drill string at normal speed, typically 7-900 RPM, while at the same time steering the hole in a predefined direction and collecting core samples.
Is the DeviCounter sold separately?
Yes, even though the DeviCounter is included as part of all DeviGyro kits, it is available for separate purchase and may be used in any case where wire length measurement is needed.
What is the weight of the DeviCounter kit?
Approximately 12 kg/26 lbs.
How is the depth displayed?
The depth is sent wirelessly for immediate and continuous display on a handheld device, either in the dedicated DeviCounter app or integrated in the app of the survey tool.
What do I do when my DeviCore will not wake up/start?
Replace batteries, check for water or moisture inside running gear. See if the tool comes up in the Bluetooth overview after waking it up with the magnet, even though it does not blink. If nothing works, contact devico support.
Does the DeviCore system record inclination?
Yes, the DeviCore records inclination, orientation, and temperature.
Which survey instruments are compatible with DeviCloud?
The DeviGyro range, DeviFlex RAPID, DeviShot and DeviAligner instruments are all DeviCloud compatible.
How many members can we have in our DeviCloud user group?
As many as you need, the user group is unlimited with DeviCloud.
How much does it cost for DeviCloud?
DeviCloud is free for all our customers. DeviCloud is compatible with DeviGyro, DeviFlex RAPID, DeviAligner and DeviShot.
Is the DeviAligner for sale?
Yes, DeviAligners are available for purchase and rental.
We forgot to turn off the DeviAligner and now it won’t start, how do we get it working again?
Simply recharge the batteries. If for any reason that does not work, obtain new batteries (Milwaukee M18) from your local hardware store.
Can DeviAligner be used underground?
Yes, unlike GPS based alignment systems the DeviAligner incorporates advanced fibre optic gyro technology and can therefore be used underground.