Devico DeviFlex Manual Download Page 2

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4) Remove the spear head from the DeviFlex and replace it with the Orientation Unit.

rom the DeviFlex and replace it with the

1) Perform a DeviFlex survey over the whole borehole length.

2) Check the survey data and find at which depth the inclination reaches -88.5°, and the azimuth shows
stable results.

3) Pull out a length of drill string equal to the depth found in step 2) + 6 meters.

Summary of Contents for DeviFlex

Page 1: ...survey in vertical boreholes It is required that the reader knows how to perform a regular DeviFlex survey The operation will be described step by step and provide information necessary for a success...

Page 2: ...he DeviFlex and replace it with the 1 Perform a DeviFlex survey over the whole borehole length 2 Check the survey data and find at which depth the inclination reaches 88 5 and the azimuth shows stable...

Page 3: ...w Align the bubble level on the Orientation Unit with Gravity Toolface Gr Toolface of 0 6 Tighten the adjustment nut to keep the DeviFlex and the Orientation Unit aligned Nut 7 Start the DeviFlex with...

Page 4: ...n Unit into the drill string and fasten it by rotating the handles clockwise 9 Rotate the drill string until the side with the bubble level points towards north or any known direction Use complimentar...

Page 5: ...the drill string is lowered down 12 Survey until the drill bit reaches hole bottom Pull out drill rods to retrieve the DeviFlex and download data 13 Transfer the results from both surveys as hole ind...

Page 6: ...lick Merge Vertical and enter the end depth of the vertical survey and the hole index of the normal survey Click Start 16 The true borehole trajectory is now presented in the index of the oriented sur...

Page 7: ...459095 Expanding Orientation Unit DF...