Currently mainly used in the following aspects:
(1) Accurately determining the position and orientation of the wellbore is very useful for sidetracking in the drilling department, determining the location of the falling objects in the well, the location of the casing suspension, and solving many directional well drilling problems.
(2) Calculate the true vertical depth based on the measured direction data and use it to correct other logging curves.
(3) When the casing is lowered after drilling, the required cement volume or gravel packing volume can be accurately calculated according to the wellbore volume integral.
(4) Two mutually perpendicular calipers indicate the ellipticity of the wellbore and may also indicate the effectiveness of expanding the wellbore under the casing. It also helps a lot of cementing operations and perforating operations.
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