Data Analytics for Drilling Engineering by Qilong Xue

Author:Qilong Xue
Language: eng
Format: epub
ISBN: 9783030340353
Publisher: Springer International Publishing

Moreover, as shown in Fig. 5.23a, when the drillstring rotates, we define the displacement of point A at the x axis as a time series S(s1, s2, ⋯, sn−1, sn), with the circle radius of R. Obviously, si = R sin (ωt). Then the velocity time series V(v1, v2, ⋯, vn−1, vn), the acceleration time series A(a1, a2, ⋯, an−1, an) can be obtained.

5.4.2 Quantification of the Risk Level of Drillstring Vibration

Schlumberger developed an independent quantitative vibration risk technique based on seismic engineering theory [49]. This technique is used to establish the relationship between the measured acceleration value and the failure parameters.1.Drillstring axial and lateral vibration level

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