Drilling assembly monitor
An apparatus is used with a drilling assembly for drilling a borehole. The drilling assembly has an impact device linked to a drill head. The impact device is powered by a first fluid under a first pressure to impart a percussive force to the drill head. The percussive force is a function of the first pressure. A thruster of the drilling assembly is also linked to the drill head. The thruster is powered by a second fluid under a second pressure to impart a thrust force to the drill head. The thrust force is a function of the second pressure. Additionally, a rotator of the drilling assembly is linked to the drill head. The rotator is powered by a third fluid under a third pressure to impart a torque to the drill head. The torque is a function of the third pressure.; The apparatus includes a first pressure sensor communicating with the first fluid to output a first electrical signal that is a function of the first pressure. A second pressure sensor communicates with the second fluid to output a second electrical signal that is a function of the second pressure. A third pressure sensor communicates with the third fluid to output a third electrical signal that is a function of the third pressure. A position sensor outputs a fourth electrical signal that is a function of depth of the drill head relative to a reference location. A device monitors the first, second, third and fourth signals. The device produces respective graph traces of functions of the percussive force, the thrust force, the torque and the depth.
Patent Number: HK1046029A1
Application Number: HK2002107619A
Inventor: YUE ZHONG QI | LEE CHACK FAN | LAW KUM TIM
Priority Date: 22 Sep 2000
Priority Number: HK1046029A1
Application Date: 21 Oct 2002
Publication Date: 21 Apr 2006
IPC Current: E21B000100 | E21B004400 | E21B004500 | E21B004704
Assignee Applicant: The University of Hong Kong
Title: Drilling assembly monitor
Usefulness: Drilling assembly monitor
機器人/機械
香港
