A downhole tool comprises a pulse generator that can generate longitudinal pulses in a drill string. A poppet is longitudinally moved in and out of an orifice in the pulse generator reducing the flow of drilling mud temporarily, generating a longitudinal pulse. The longitudinal pulse generator may be combined with a conventional transverse pulse generator to create a pulse generator capable of generating pulses in both transverse and longitudinal directions.
申请公布号
US8733469(B2)
申请公布日期
2014.05.27
申请号
US201113029548
申请日期
2011.02.17
申请人
KONSCHUH CHRISTOPHER;COMEAU LAURIER E.;XTEND ENERGY SERVICES, INC.