Water Well Services
From Wireline Services
The entire range of Geotech equipment is available on a service basis operated by our own highly-trained personnel. GeoTech SA field crews are experienced in data-processing, interpretation and equipment maintenance and are capable of prolonged service logging operations with minimum outside support. These contracting services can be very cost-effective in situations where a project does not warrant the purchase of equipment and the necessary back-up facilities.
Applications
- Determination of water quality
- Indication of permeable zones and porosity
- Fluid salinity
- Location of zones of different water quality
- Temperature gradient
- Water-level determination
- Location of grout behind casing
- Temperature compensation of other logs
- Flow measurement within a water well
- Location of permeable zones
- Casing leak detection
- Location of aquifers
- Contamination studies
- Porosity measurement
- Detection of cavities and missing cement around casing
- Video inspection
- Lithology
- Density
- Bed thickness and boundary location
- Ash content in coal
- Strata correlation between boreholes
- Moisture determination in coal
- Resolution of seam partings
- Ore identification and quality
- Indication of mineralization, particularly of disseminated sulphides
- Verticality measurements in steel casing or in the presence of magnetic ores
- Azimuth and orientation of the borehole
- Rock strength and elasticity
- Correction of seismic velocity
- Fracture and permeability indication in hard rock
- Location of poor or missing cement behind casing
- Detection of weathered or fractured zones
- Ground compaction studies
Equipment
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Electric Log (ELOG)
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Fluid Temperature / Conductivity (TCGS)
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Three-Arm Caliper (CALIPER)
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Borehole Video Inspection Systems (CAMERA)
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Dual Focussed Induction (DUIN)
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Verticality (BDVS)
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Gyroscopic Verticality (GYRO)
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Neutron (NNTS)
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Impeller Flowmeter (FLOWMETER)
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Focussed Electric (Guard Log)
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Water Quality (WQS)
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Sidewall Density and Density/Guard (FGSV)
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Full-Waveform Compensated Sonic (FWVS)
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Natural Gamma (NGSV)
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MAGNETIC SUSCEPTIBILITY (MGSV)
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Water / Gas Sampler (WGVS)
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High-Resolution Acoustic Televiewer (HIRAT)
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Borehole Optical Televiewer (OPTV)
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INDUCED POLARIZATION
(INSV)
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