Drilling assembly monitor
- Summary
- 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.
- Supplementary Information
- 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
- Industry
- Robot/Machinery
- Country/Region
- Hong Kong
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