hole deviation

hole deviation

[′hōl ‚dē·vē‚ā·shən]
(engineering)
The change in the course or direction that a borehole follows.
References in periodicals archive ?
Since the results are obtained immediately, it is possible to react to any hole deviation when positioning and directing the following holes.
Tenders are invited for Supply of Multi shot digital unit for capturing Compass-inclinometer images of Bore hole deviation survey system, with mechanical accessories.
Hole deviation was monitored by multi-shot down hole camera and a representative population probed with a gyroscopic tool for QA/QC purposes.
In cases where a weak rock mass is present or where discontinuities in the rock are persistent, open and frequent, "unanticipated" drill hole deviation may result.
Providing advanced sonic drill technology with innovative and patented designs, the LS600 rig delivers more accurate core sampling, less than one-percent hole deviation, reduced waste, and faster penetration than conventional methods.
the difference between the nominal value and average measured value of the shaft diameters for specimens (i), and hole deviation, that is the difference between the nominal value and average measured value of the internal diameters of specimens (ii).
Directional drilling equipment is now onsite to ensure the drilling targets are encountered with minimal drill hole deviation and to permit wedging or fanning from "master holes" at depths where new holes from surface would be less efficient and more time consuming.
During the 2013 program, 29 diamond drill holes were attempted, 25 holes were completed through the Deep Kerr target, two were lost due to significant hole deviation (K-13-27 and K-13-33) and two were terminated due to weather and are available for re-entry in the future ( K-13-25D and K-13-28C).
Providing advanced sonic drill technology with innovative and patented designs, the LS600 rig delivers more accurate core sampling, less than 1-percent hole deviation, reduced waste, and faster penetration than conventional methods.
This delivers improved impact efficiency for faster penetration rates, increased rod tip-off resistance, and reduced hole deviation.
Both holes intersected the southern and eastern flanks of the anomaly but due to hole deviation did not intersect the core zone located within the quartz feldspar porphyry.
com, ASX: BLY), the world's leading integrated drilling products and services provider, has expanded its line of underground rock drill and blast rods and bits with the new Robust Standard Thread (RST(TM)) Series, designed for improved impact efficiency, potentially faster penetration rates, increased resistance to rod tip-off events, and less hole deviation.