公开(公告)号：US20050231383A1

公开(公告)日：2005-10-20

申请号：US11101033

申请日：2005-04-06

申请人： F. Pratt ,  Axel Schmidt ,  Kenneth Lambe

发明人： F. Pratt ,  Axel Schmidt ,  Kenneth Lambe

IPC分类号： G01V3/00 ,  G01V11/00 ,  H04H60/31 ,  H04H9/00

CPC分类号： G01V11/002 ,  E21B47/187

摘要： An improved energy efficient intelligent pulser driver used for generating a mud pulse in a MWD (measurement while drilling) application. In the pulser driver, a direct current (DC) powered control circuit activates a three-phase DC brushless motor that operates a servo-valve. Opening of the servo-valve equalizes pressure in a plenum causing the operation of a main valve reducing flow area and causing a pressure spike in the mud column. Closing of the servo-valve creates a reduction in mud pressure that operates the main valve and increases the flow area causing an end to the pressure spike. The servo-valve is powered both in opening and closing operations by the motor.

摘要翻译： 用于在MWD（钻井中测量）应用中产生泥浆脉冲的改进的能量效率智能脉冲发生器驱动器。 在脉冲发生器驱动器中，直流（DC）供电的控制电路激活操作伺服阀的三相直流无刷电动机。 伺服阀的打开使压力平衡使主阀的操作减少流动面积并引起泥浆柱中的压力尖峰。 伺服阀的关闭产生泥浆压力的降低，从而操作主阀并增加流动面积，从而结束压力尖峰。 伺服阀在电机的打开和关闭操作中都被供电。