Borehole camera inspection—also known as downhole video inspection or borehole surveying—is a modern diagnostic technique that allows drillers, hydrogeologists, and borehole owners to see inside a well without guesswork. At AquiferDrillers.com, we use this technology to assess borehole condition, diagnose problems, and verify construction quality. But how exactly is this inspection carried out? Let’s walk through the process step by step.
What Is a Borehole Camera Inspection?
A borehole camera inspection involves lowering a specialized waterproof video camera into a borehole to visually examine its interior. The camera transmits live footage to the surface, where an operator records and analyzes the condition of the casing, screens, joints, and surrounding structure. This non-destructive method provides accurate, real-time information that would otherwise require costly and invasive procedures to obtain.
The Equipment Used
The core of the inspection is the downhole camera system, which typically consists of:
- A waterproof camera head — available in side-view, forward-view, or dual-view configurations, often fitted with powerful LED lighting to illuminate the dark borehole interior.
- A sturdy cable or pushrod — marked at regular intervals to measure depth accurately as the camera descends.
- A control unit and monitor — where the operator watches live footage, controls lighting and focus, and records video for later review.
- A winch or reel system — for smooth, controlled lowering of the camera, especially in deep boreholes.
Cameras may be mounted on rigid centralizers to keep them centered in the borehole, ensuring stable and clear footage.
Step-by-Step: How the Inspection Is Done
1. Preparation and Safety Checks
Before any inspection, the borehole is assessed for accessibility. The wellhead cover is removed, and the area is secured. Operators check for potential hazards such as toxic gases in certain geological formations and confirm the borehole is safe for camera entry.
2. Initial Depth Measurement
The total depth of the borehole is established—often from drilling records or confirmed with a weighted tape or sounder—so the operator knows what to expect during the survey.
3. Camera Deployment
The camera is slowly lowered into the borehole, either from the surface downward or from the bottom upward, depending on the survey objective. Descent is deliberately slow to allow clear, stable footage and accurate depth correlation.
4. Real-Time Visual Assessment
As the camera travels, the operator examines and records:
- Casing condition — cracks, corrosion, breaks, or misaligned joints
- Screen condition — clogging, mineral encrustation, or collapsed sections
- Water quality indicators — turbidity, color, or presence of sediment
- Biofouling — bacterial growth or iron deposits
- Debris — sand, silt, stones, or foreign objects
- Gravel pack and open-hole conditions
5. Recording and Depth Logging
Throughout the survey, footage is recorded with depth markers overlaid or noted, so any defect can be pinpointed to an exact depth. This record becomes a valuable reference document for the borehole owner.
6. Analysis and Reporting
After the camera is retrieved, the footage is reviewed in detail. Our team at AquiferDrillers.com compiles the findings into a clear report, complete with video evidence, photographs, depth references, and practical recommendations—whether that means cleaning, rehabilitation, repairs, or simply confirmation that all is well.
Why Borehole Camera Inspection Matters
A camera survey takes the guesswork out of borehole maintenance. It is invaluable for:
- Diagnosing low water yield — identifying clogged screens or collapsed sections
- Verifying new boreholes — confirming proper casing and screen installation before handover
- Planning rehabilitation — knowing exactly where the problem is before committing to repair costs
- Pre-purchase assessments — evaluating borehole condition before buying property
- Monitoring aging boreholes — catching deterioration early before costly failure
How Often Should You Inspect?
For active boreholes, we recommend an inspection every two to three years, or immediately if you notice declining yield, changes in water quality, sand in the water, or unusual pump behavior.
Borehole camera inspection is a fast, accurate, and cost-effective way to protect your water investment. At AquiferDrillers.com, our experienced team uses professional-grade camera systems to give you a complete, honest picture of your borehole’s condition—saving you money and extending the life of your water source.
Contact AquiferDrillers.com today to schedule your borehole camera inspection.