Services

GeoMole provides both technical and consultancy services. These services include:

  • Drillhole planning to optimise the advantages of BHR imaging
  • BHR Acquisition Services
  • Processing and Interpretation of BHR Data
  • Training in all areas of BHR from acquisition through to interpretation
  • Incorporation of BHR results with your current geological models
  • Incorporation of BHR results with your seismic data
  • Incorporatoin of BHR results with surface and DHTEM data
  • Implementation of Self-drive BHR at your site or project. Self-drive includes radar lease, software, training and consulting so you can run BHR at your site.

The GeoMole borehole radar can provide high resolution images to determine the continuity of target horizons up to 70 m from the drillhole depending on the resistivity of the host rock.

More information on Radar Solutions

More information on Borehole Radar Hardware

More information on Borehole Radar Software

Radar Solutions

Borehole Radar has been applied successfully to the following areas:

* Kimberlitic pipe delineation
* Mapping potholes in the Bushveld platinum mines
* Mineralised dyke and sill delineation
* Imaging mineralised reefs ahead of mining
* Massive nickel sulphide delineation
* Mapping mineralised shear zones e.g. gold reefs
* Mapping structural information in shaft and geotech pilot boreholes
* Tunnels and void detection

Hardware

GeoMole has two different radar tools available for surveys:

  • The Monostatic or Iqua is a single probe radar that transmits and receives on the same antenna.
  • The Bistatic or isiJula radar is longer at 5.5m and has a separate Transmitter (Tx) and Receiver (Rx) connected by a flexible or solid optical fiber spacer.

Due to logistical and space constraints the Iqua radar is most often used; however the isiJula can also be used for specialised applications. It is important to note that due to the physics behind transmission the closest that the Iqua can 'see' a target away from the drillhole is at 3m. Similarly, due to the physical configuration, the isiJula can only image targets further than 2 meters away from the drillhole.

SpecificationMonostatic (Iqua)Bistatic (IsiJula)
Length 1.65 m 5.5 m (1.65Tx + 2.0Spacer + 1.65Rx)
Diameter 32 mm – 42 mm 32 mm – 42 mm
Weight 3 Kg 8 Kg
Transmitted Frequency(Center) 10 -100Mhz (60Mhz) 10 – 100Mhz (40Mhz)
Storage Capacity 4hrs 30 min 4hrs 30min
Traces Capture Time 2 sec 2 sec
Optimal Deployment Speed 0.33 m per trace 0.33 m per trace
Download Method Serial - Bluetooth Serial - Bluetooth
Depth Rating 1000m
( 32 mm plastic housing)
3000m
(36/42mm fiberglass housing)
1000m
(32 mm plastic housing)
3000m
(36/42 mm fiberglass housing)
Normal Range (min – max) 3-40m (varies with rock type) 2-40m (varies with rock type)
Maximum salinity 2000us/m 2000us/m
Sample Frequency 250Mhz 250Mhz
Primary Resolution 8-bit 8-bit
Battery Life 8 hrs – Survey or
12 hrs - Standby
8 hrs  - Survey or               
12hrs - Standby

SeisWin Software

SeisWin is a data analysis and interpretation package that provides interactive data processing and interpretation for borehole radar and other waveform data (e.g. seismic). The built-in utilities such as 1D and 2D filtering, special SVD filtering, event migration and common tangent line stacking allow the user to enhance the data quality and map the features from radar time sections onto the basemap for spatial presentation and validation. With prior geological knowledge, ambiguity associated with borehole radar can be eliminated.

SeisWin also provides a means for the interpretation and display of seismic and full waveform sonic data. Two and three-dimensional seismic data sets can be handled. The interpretation can involve interaction with a basemap window showing the locations of survey lines and relevant geological and other features. It allows the user to map features on the seismic section such as bad data zones and faults on to the base map so that the user can correlate them within the survey area.