Borehole Camera Inspections

Introduction

Borehole Camera Inspections offer a quick and comparatively inexpensive way to inspect, investigate and verify downhole conditions at depths not easily reachable by other means. Ideal for:

well inspections
pendulum anchorage inspections
inclinometer casing inspections
verification of instrument construction and functionality
investigation of casing and screen integrity
verification of water levels and instrumentation for monitoring wells
investigation of downhole geology and rock characteristics

Solutions

Canary Systems® rugged borehole cameras are capable of inspections up to a depth of 650′ with lighted video, a microphone, and an automatic depth encoder integrated in the display. The camera diameter is only 3/4″, allowing use in boreholes as small as 1″.

Camera footage can be integrated with instrumentation readings, maps and other data in MultiLogger Suite, and stored and displayed as MP4 video file via web browser directly from MLWeb®.

Audio & Video

Lighted video recording with microphone

Reliable

Rated for up to 1000 PSI

Analysis

Specialized charting, visualization, and analysis options for high-frequency data

Case Studies

CASE STUDY – DATA VERIFICATION (TAILINGS DAM)

A mine site was experiencing movement on a tailings impoundment and concerns were raised about the structure’s actual hydrostatic pressure. A borehole camera was deployed to verify that the automated system that was monitoring standpipes was reporting valid pressures.

Verified sounding levels of monitoring wells and piezometer pressure readings
Identified piezometers that needed replacement
Identified mudded in instruments
Investigated damage in inclinometer casing

CASE STUDY – PENDULUM ANCHORAGE (CONCRETE DAM)

An inverted pendulum deployed at a concrete dam was showing limited displacement monitoring range. It was suspected that the lower wire anchor was not centered properly in the metal casing.

Visual inspection with the camera was able to confirm that the wire anchorage was against the casing wall at the bottom of the casing. It was possible to tie off the old wire to the side wall and a new anchor and wire were installed, resulting in salvaging the instrument.