borehole survey

borehole survey

[′bȯr‚hōl ‚sər·vā]
(engineering)
Also known as drill-hole survey.
Determining the course of and the target point reached by a borehole, using an azimuth-and-dip recording apparatus small enough to be lowered into a borehole.
The record of the information thereby obtained.
References in periodicals archive ?
The FEED will define the facilities needed for the ensuing engineering, procurement, construction, and installation bidding phase, while the surveys, including a geotechnical borehole survey at the location of the production facilities, will provide site-specific data for the next phase of engineering.
Mr Cundall said evidence from a borehole survey and a ground penetrating radar survey also added weight to the belief that Spitfires were buried at the location, set to be excavated early next year.
Laser systems offered a 3-D survey and borehole survey integration, but they provided limited cross-sectional views of the borehole and did not provide a visual reference to allow for rock mass characterization.
Borehole survey is on an impressive scale, one study by Spencer involving 3400 boreholes and two transects of 10 km.
15+ applications described for MEMS gyroscopes: Human motion capture, Physical activity monitoring, Antenna Stabilization, Directional drilling & borehole survey, Camera stabilization, Model helicopters and high-end toys, UAVs flight control, Backup instruments, Cockpit instrumentation, Missile Guidance, Precision Guided Munitions, Bombs & Rockets, Platform stabilization, Military training systems, Agriculture.
The surveys, which include a geotechnical borehole survey at the location of the production facilities, will provide important site-specific data for the next phase of engineering.
These targets include both a shallow (100 meters) off-hole conductor identified last fall during a borehole survey conducted by Crone Geophysics on hole OK-M3 and also a strong VLF-EM bedrock conductor identified during the recent geophysics survey completed earlier this spring.
The borehole survey report recommends that, prior to the next drilling phase, detailed geophysical surface surveys be carried out to further define the precise location, size and extent of this vertical conductor.
These surveys are specifically designed to 1) outline the surface trace of a shallow, highly conductive Pulse EM anomaly detected during a borehole survey of OK-M3 in late 1998, and 2) carry out initial testing of the new electrical anomalies interpreted to coincide with the magnetic anomaly located 3 kms northeast of the main anomaly.
A field crew from Lamontagne Geophysics of Kingston, Ontario arrived at Okak Bay earlier this month to carry out an EM borehole survey of drill hole OK-M1 down to a depth of 4915 feet.
The results presently being modeled and interpreted by Lamontagne Geophysics of Kingston, Ontario confirms the results of a less detailed UTEM 3 borehole survey completed on the same hole last November.
The probe survey equipment will be mobilized to the Okak Bay project this weekend to commence a borehole survey of OK-M2 drilled to a vertical depth of approximately 2450 feet.