发明名称 METHOD AND DEVICE TO REDUCE OSCILLATIONS OF STICKING-SLIPPING IN DRILLING STRING
摘要 FIELD: mining.SUBSTANCE: method contains the following stages: (a) damping of sticking-slipping oscillations using a drilling mechanism above a drilling string, (b) control of drilling mechanism speed of rotation using a PI controller, (c) turning of a PI controller so that the drilling mechanism absorbs a larger part of twisting energy from the drilling string at the frequency of sticking-slipping oscillations or near it.EFFECT: tuning of proportional-integral or proportional-integral-differential controller for damping of twisting waves energy at sticking-slipping frequency or near it.21 cl, 8 dwg
申请公布号 RU2478781(C2) 申请公布日期 2013.04.10
申请号 RU20110127193 申请日期 2008.12.02
申请人 NEHSHNL OJLVELL VARKO, EHL.PI. 发明人 KJULLINGSTAD OGE
分类号 E21B44/00 主分类号 E21B44/00
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