公开(公告)号：WO2013055590A4

公开(公告)日：2013-06-13

申请号：PCT/US2012058954

申请日：2012-10-05

Applicant: BAKER HUGHES INC ,  HUMMES OLOF ,  MEISTER MATTHIAS ,  KRUEGER SVEN ,  SANTELMANN BERND ,  KOPPE MICHAEL

Inventor： HUMMES OLOF ,  MEISTER MATTHIAS ,  KRUEGER SVEN ,  SANTELMANN BERND ,  KOPPE MICHAEL

IPC: E21B17/07 ,  E21B23/14

CPC classification number: E21B17/07 ,  E21B7/062 ,  E21B44/00

Abstract: A method, apparatus and computer-readable medium for reducing a vibration of a drill string in a borehole. A sensor of the drill string obtains one or more measurements of a parameter of the vibration. A processor determines at least one force for controlling the measured vibration from the measured parameter. At least one actuator applies the determined at least one force against the borehole wall to control the vibration of the drill string.

Abstract translation: 一种用于减少钻孔中的钻柱的振动的方法，装置和计算机可读介质。 钻柱的传感器获得振动参数的一个或多个测量结果。 处理器根据测量的参数确定用于控制测量的振动的至少一个力。 至少一个致动器将所确定的至少一个力施加在钻孔壁上以控制钻柱的振动。

公开(公告)号：WO2009132179A3

公开(公告)日：2009-10-29

申请号：PCT/US2009/041526

申请日：2009-04-23

Applicant: BAKER HUGHES INCORPORATED ,  MEISTER, Matthias

Inventor： MEISTER, Matthias

IPC: E21B10/26 ,  E21B10/30

Abstract: Reamer bits have cutters with different effective back rake angles. Drilling systems include a pilot bit and a reamer bit, wherein cutters in shoulder regions of the reamer bit have a greater average effective back rake angle than cutters in shoulder regions of the pilot bit. Methods of drilling wellbores include drilling a bore with a pilot bit, and reaming the bore with a reamer bit having cutters in shoulder regions of the reamer bit that have an average effective back rake angle greater than that of cutters in shoulder regions of the pilot bit. Methods of forming drilling systems include attaching pilot and reamer bits to a drill string, and positioning cutters in shoulder regions of the reamer bit to have an average effective back rake angle greater than that of cutters in shoulder regions of the pilot bit.