Natural Gamma Radiation Logging
Igne’s natural gamma logging identifies subsurface lithology and stratigraphy through borehole walls supporting groundwater studies, formation correlation, and geological interpretation.
Borehole Geophysics & CCTV
Understanding what’s happening inside a borehole is essential for good decision-making.
About
Geophysical logging & CCTV Inspection
Whether you're drilling a water supply well, conducting a site investigation, installing instrumentation or monitoring ground conditions, seeing below the surface provides clarity, certainty and confidence.
At Igne, we offer a full suite of borehole geophysical logging and CCTV inspection services, designed to capture accurate downhole data and visuals from new, existing or legacy boreholes.
These techniques give you the evidence needed to assess formation conditions, check construction quality, or investigate performance issues.
Our equipment is operated by trained technicians and used on projects across water, energy, infrastructure and environmental sectors throughout the UK.
The uses
What is Borehole Geophysics & CCTV Used For?
These services provide high-resolution, in-situ data and imagery that support design, assessment, or remediation decisions. Applications include:
- Evaluating aquifer properties and water quality
- Verifying borehole construction and completion
- Assessing performance issues (e.g. collapse, blockage or scaling)
- Supporting design of pumps, screens and instrumentation
- Investigating structural deformation or borehole deviation
- Correlating geological logs and core recovery
- Supporting environmental monitoring and site investigation
- Orientated fracture and fault analysis for geological / geotechnical models
- Correlating geotechnical data with in-situ borehole data.
Whether used during drilling, post-construction or as part of a maintenance or rehabilitation programme, borehole geophysics and CCTV inspections deliver actionable data with minimal disruption.
Our Services
Our Borehole Logging & Inspection Capabilities
Igne provides a wide range of downhole surveys using industry-standard and advanced tools, including:
- Natural Gamma Ray to assess and correlate lithology, stratigraphy and clay content
- Temperature & Conductivity to locate inflow/outflow zones or assess water quality
- Flowmeter Logging to quantify vertical flow and identify flow zones
- Caliper Measurement to assess borehole diameter and identify collapse, bridging or scaling. A pre-requisite to every logging run, as a risk assessment, and to verify data quality.
- Dual Focused Resistivity to evaluate formation properties and potential yield
- Verticality Surveys to measure borehole deviation, particularly important for pump installation or instrumentation accuracy
- CCTV Inspection high-quality video logging of borehole casing, screens and geological features
- Optical Televiewer 360 degree, true colour orientated image of the borehole wall, which can identify fractures and lithology changes.
- Acoustic Televiewer 360 degree image, created using a rotating transducer, similar to Optical Televiewer, but used when borehole fluid is disturbed.
- P&S Suspension Logger uses a solenoid hammer to obtain P&S velocities, which gives Poisson’s Ratio, Youngs Modulus, Shear Modulus, and Bulk Modulus.
Each of these techniques is available as a standalone service or as part of a complete borehole survey package.
Explore our Borehole Geophysics & CCTV services in more detail:
Temperature & Conductivity Logging
Igne’s temperature and conductivity logging reveals groundwater flow, aquifer characteristics, and thermal behaviour supporting hydrogeological and geothermal system design.
Flowmeter Logging
Flowmeter logging is a downhole technique used to measure the direction and velocity of water movement within a borehole.
Caliper Measurement Logging
Caliper logging is a simple, yet powerful, geophysical tool used to measure the internal diameter of a borehole along its entire depth.
Dual Focused Resistivity Logging
Dual focused resistivity logging is a geophysical technique used to measure the electrical resistance of subsurface materials surrounding a borehole
Verticality Logging
Verticality logging is the process of measuring how straight, or deviated, a borehole is from the vertical axis.
Our clients
Who Uses These Services?
We support a wide range of clients, including:
- Water well owners (domestic, agricultural and commercial)
- Geotechnical and environmental consultants
- Water utility companies and contractors
- Energy developers (geothermal and ground source heat)
- Industrial process operators
- Local authorities and public bodies
- Construction and infrastructure teams
Whether you need to confirm borehole integrity, assess a problem, or collect baseline data for a project, our logging services are built around accuracy, clarity and practical decision-making.
FAQ
Frequently Asked Questions about Borehole Geophysics & CCTV
- Do I need a geophysical survey on every borehole?
Not necessarily, no. But if you need to confirm construction quality, investigate poor performance, or collect detailed formation data, it’s highly recommended.
- What kind of boreholes can be inspected?
We can survey most open or cased boreholes, provided they are accessible and contain a clear fluid column (usually water). Surveys can be conducted on newly drilled or long-established boreholes.
- How deep can you survey?
Our equipment can typically log to depths of several hundred metres. The exact depth depends on borehole diameter, fluid condition and site access. We’ll confirm this during project scoping.
- Can these surveys be used in geothermal boreholes?
Yes. Temperature profiling, verticality, and caliper logs are especially valuable in geothermal boreholes to verify depth, straightness and zone integrity before installation of heat exchangers.
- What is the benefit of using CCTV over geophysical logs?
CCTV gives a direct visual record of the inside of the borehole, which is ideal for inspecting casing, joints, screens and obstructions. Geophysical logs provide quantitative data about the surrounding formation. Often, they’re used together.
- How long does a typical survey take?
Most surveys are completed within a day, depending on borehole depth and the number of logs required. We’ll provide a clear timeline and method statement before work begins.
- Do I need to pump or clean the borehole first?
If the water is cloudy, contains debris, or the borehole hasn’t been used in a while, we may recommend airlifting or brushing beforehand. Clean, stable water improves both data quality and camera visibility.
- Can the results be shared digitally?
Yes. We supply digital copies of logs, reports, and CCTV footage, all formatted for easy reference or onward sharing with your consultants, regulators or engineers.
- Can you provide other geophysical logging services not listed?
Yes. Please enquire and we can tailor to your needs.
The Next Step
See the Bigger Picture Inside Your Borehole – with Igne
Whether you’re maintaining an existing system or developing a new one, borehole logging and inspection help you make confident, informed decisions based on reliable, high-quality data.
Contact us today to book a borehole survey and gain clear insight, from the surface to the very bottom.
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A water well is a drilled borehole that taps into subsurface groundwater sources, providing a private and independent water supply.
Advanced Drilling & Installations
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Maintenance Contracts
Protect your investment with a tailored borehole maintenance contract from Igne. Regular servicing, emergency repairs, and expert support to keep your system flowing.
Well Cleaning & Rehabilitation
Restore performance and extend the life of your water well. Igne’s cleaning and rehabilitation services tackle blockages, biofouling and declining yield with proven results.
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Gain detailed insight into borehole condition and performance. Igne’s geophysical logging and CCTV inspections support design, troubleshooting, and compliance with confidence.
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Geothermal
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