Tool face in drilling

The number of wedges can be found by the following formula. The length of deviation section could be calculated with the following formula:. To plan the required change in borehole trajectory a specific set of input information should be available. Those are: — azimuth and dip angle at the initial current point — final required values of azimuth and dip; — the dogleg severity the rate of spatial angle change suitable for the purpose of the borehole.

Using the provided formulas the output data will be: — the toolface angle — the number of wedges needed or the length of the deviated section. Practicle example What should the toolface angle be to set up a steel wedge to correct a drill hole from azimuth 65deg to azimuth of 80deg and from dip deg to dip of deg? The Dogleg of the correction to reach the required direction is 6.

Calculation of toolface angle. In this specific case it will take 4. The depth of the required direction should be considered in such a way as to accommodate 15m spacing between the wedges. Calculation of the length of the deviation. Note: An Excel spreadsheet and Android application containing all deviation calculations presented here can be downloaded from here. Skip to content Toggle navigation Coring Magazine. You managed to hit the nail upon the top and defined out the whole thing without having side effect , people could take a signal.

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