公开(公告)号：US3782190A

公开(公告)日：1974-01-01

申请号：US3782190D

申请日：1972-08-03

Applicant: TEXACO INC

Inventor： PITTMAN R

IPC: E21B12/02 ,  E21B44/00 ,  G01L5/00 ,  G01M13/02 ,  E21B47/00

CPC classification number: G01M13/02 ,  E21B12/02 ,  E21B44/00 ,  G01L5/00

Abstract: Rotary drilling method and apparatus for indicating incipient roller cone bearing failure of a bit, or similar downhole conditions. Use is made of signals representing the torque being applied and the weight on the bit, both during drilling, while a constant that is proportional to bit diameter is included in determining the ratio of torque to weight times diameter.

Abstract translation: 用于指示初始滚子轴承故障的旋转钻孔方法和装置，或类似的井下条件。 在钻孔期间使用表示正在施加的扭矩和钻头上的重量的信号，同时确定与钻头直径成比例的常数包括在确定扭矩与重量乘以直径的比率。

公开(公告)号：US3724558A

公开(公告)日：1973-04-03

申请号：US3724558D

申请日：1971-09-22

Applicant: TEXACO INC

Inventor： RUNDELL H ,  PITTMAN R

IPC: E21B44/00 ,  E21B3/04

CPC classification number: E21B44/00 ,  Y10T137/1007 ,  Y10T137/1044

Abstract: The rotary speed of a rotary drive system, including a rotary engine, for a drill in a well is maintained at a predetermined value and is sensed by a tachometer. An electrical signal from the tachometer is converted to a pneumatic signal by an electropneumatic transducer which is applied to a receiver-controller receiving a supply of filtered air at a predetermined pressure. When the electrical signal from the tachometer changes due to a change in the rotary speed of the rotary drive system from the predetermined value, the pneumatic output from the receiver controller changes accordingly until the rotary speed of the rotary drive system is once again at the predetermined value. The pneumatic output from the receiver controller remains at the pressure which returned the rotary speed to its predetermined value. In achieving speed control, the pneumatic output from the receiver controller is effectively amplified by a booster relay receiving filtered air at a second predetermined pressure to provide a pneumatic signal. The pneumatic signal from the booster relay is applied to the throttle of the rotary engine to control the engine''s rotary speed and hence the rotary speed of the rotary drive system and drill.

Abstract translation: 旋转驱动系统的旋转速度，包括用于井中的钻头的旋转发动机的转速保持在预定值，并由转速计感测。 来自转速计的电信号通过电 - 气动换能器转换为气动信号，该电 - 气动换能器被施加到在预定压力下接收过滤空气供应的接收器控制器。 当来自转速计的电信号由于旋转驱动系统的转速从预定值的变化而变化时，来自接收器控制器的气动输出相应地改变，直到旋转驱动系统的转速再次处于预定值 值。 来自接收器控制器的气动输出保持在将转速恢复到其预定值的压力。