<p>Flowline electrical impedance generation means (5) for generating a local electrical impedance in a metallic tubing portion of a flowline (21). Such means (5) may be used in place of insulation joints in various systems. The impedance generation means (5) is tuned or tuneable to achieve maximum impedance at chosen frequencies - ie frequencies which it is desired to block.</p>
申请公布号
WO2009153552(A1)
申请公布日期
2009.12.23
申请号
WO2009GB01501
申请日期
2009.06.16
申请人
EXPRO NORTH SEA LIMITED;HUDSON, STEVEN, MARTIN;BROMWICH, ROBERT, CHARLES