Determination of Well Deflection (7) 



On the stereogram (fig. 25-11) the north component of well deflection 

 is measured 6.5 degrees inward from the N point. The east component is 4.5 

 degrees from E point. Applying procedure 2, one finds that the resultant of the 

 well components is 8.5 degrees on azimuth 35 degrees. It may be noted that 

 the hade of the well is here treated as dip because measurements at the center 

 of the net would not be accurate for these small angles. For well deflections of 

 less than 5 degrees, polar-coordinate graph paper may be used; the angular 

 components of well deflection are plotted as vectors from the center. Although 

 this procedure is not rigorously accurate, the error is too small to be of im- 

 portance. 



Figure 25-11. Example of dipmeter interpretation. 



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