公开(公告)号：US3774445A

公开(公告)日：1973-11-27

申请号：US3774445D

申请日：1971-11-24

Applicant: TEXACO INC

Inventor： RUNDELL H ,  DAVIS J

IPC: E21B12/02 ,  E21B44/00 ,  E21B47/00

CPC classification number: E21B44/00 ,  E21B12/02

Abstract: A method and apparatus for monitoring the wear on a rotary drill bit including means for measuring the revolutions of the drill string and the weight on the bit, and for obtaining the product thereof, such product being a measure of the wear on the bit. A pulse train is generated having a pulse rate proportional to the weight on the bit. Controlled portions of the pulse train are registered in a counter, the portions being proportional in duration to the number of revolutions turned by the bit, with the result that the accumulated count registered provides at any time the integrated product of weight and revolutions, as a measure of bit wear.

Abstract translation: 一种用于监测旋转钻头上的磨损的方法和装置，包括用于测量钻柱的转数和钻头上的重量的装置，并且为了获得其产品，这种产品是钻头上的磨损的量度。 产生具有与比特重量成比例的脉冲速率的脉冲串。 脉冲串的控制部分被记录在计数器中，这些部分的持续时间与由该位转动的转数成比例，结果是所登记的累计计数随时提供了重量和转数的积分乘积，作为 测量钻头磨损。