CCTV BOREHOLE INSPECTION SERVICES & BOREHOLE CONDITION ASSESSMENT

You can't service what you can't see.

Clearly, the condition of any borehole is paramount to its ongoing performance. It’s important, therefore, to check a newly drilled bore to ensure that its design and specification have been met. Similarly, an existing bore should be reviewed periodically – as part of an ongoing maintenance programme – to highlight any latent faults before they develop into major problems or disruptions in supply. Any problems that manifest themselves at other times – perhaps because of a drop-off in performance – also need to be investigated, and the most effective way of performing all these checks is by way of a visual inspection through CCTV.

Applications:

• New Construction Inspection – to indicate the quality of work and offer customer assurance - also provides a benchmark data for monitoring any future changes.
• Periodical Inspection – to ascertain current well conditions & determine maintenance needs.
• After Service Inspection – to verify effectiveness of cleaning & repairs.
• Pre-Purchase Inspection – to establish well conditions at transfer of ownership.

Use of CCTV can:

• Verify correct type, size and positions of casings and screens.
• Check the integrity of casings and grout seals.
• Locate and identify causes of obstructions.
• Determine the condition of well screens.
• Identify corrosion, bio-fouling or other screen blockages.
• Locate voiding behind linings or areas of sand ingress.
• Identify potential borehole collapse.
• Investigate groundwater quality, mineral conditions, geological strata, etc.
• Find lost tools or pumps and assist in retrieval.

The camera kit consists of:

• Selectable DOWNHOLE and SIDE VIEW colour camera with 360° rotation and forward-reverse direction control. White balance, long life, shock-proof, high intensity LED lighting for side & forward view.
• Portable 12 volt powered reel with 1,000 feet ( 300 metre ) of Kevlar reinforced coaxial cable ( nominal breaking strength 750lb ) with adjustable extended boom assembly for centring camera over well and encoder for on-screen digital depth display ( feet or metre ).
• Camera operating unit to control camera rotation, select forward or side view and to determine the speed of raising or lowering the camera.
• 7-inch LCD control monitor with hood for outdoor viewing.
• 12 volt portable DVD recorder for capturing video survey.
• Rechargeable battery giving up to 5 hour operation.
• Assembled on a small 2-wheel hand cart for manoeuvrability on site.