Patent · US Active

Method to predict, illustrate, and select drilling parameters to avoid severe lateral vibrations

US9435187B2 · kind B2 · utility

3Cited by

9References

21Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Andreas Hohl · Hannover, DE
Bernhard Meyer-Heye · Bremen, DE
Hanno Reckmann · Wathlingen, DE

Key dates

Filing date	Sep 20, 2013
Grant date	Sep 6, 2016
Priority date	—
Expiry date	Nov 3, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B47/00
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method for estimating drilling parameters for drilling a borehole in the earth includes: drilling the borehole with a drill string having a mud motor and a drill bit; constructing a mathematical model of a system including the drill string, the mud motor, and a borehole geometry; calculating a mud motor lateral excitation force imposed on the drill string by the mud motor for one or more combinations of drill string rotational speed and mud motor rotational speed; calculating lateral motion of the drill string and a force imposed on the drill string at positions along the drill string for the one or more of combinations using the model and the excitation force; selecting a range of combinations of drill string rotational speed and mud motor rotational speed that result in the force imposed upon the drill string being less than a threshold value; and displaying the range of combinations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.