发明名称 |
BACK-UP TONG BODY |
摘要 |
A back-up tong is provided for use with a power tong to make up and break out longitudinally adjoining pipe sections. A torque arm engages the back-up tong and power tong to transfer torque therebetween, and a load cell is provided to measure the torque. The rear of the back-up tong has a fin element is rotatably mounted thereto. The fin element and torque arm are driven together upon initiating make up or break out operations to trap the load cell therebetween. The rotatable fin element substantially maintains alignment with the load cell and torque arm during make up for more reliable torque measurements. The fin element may alternately be mounted to the power tong.
|
申请公布号 |
CA2260514(A1) |
申请公布日期 |
1999.10.20 |
申请号 |
CA19992260514 |
申请日期 |
1999.01.28 |
申请人 |
WHITE BEAR ENERGY SERVICES LTD. |
发明人 |
DLASK, JIRI;RIGBY, DARRALL |
分类号 |
E21B19/16;(IPC1-7):E21B19/16;B23P19/04 |
主分类号 |
E21B19/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|