Stuck Pipe - Free Point Determination

Stuck Pipe - Free Point Determination

Detection of the stuck point to locate the lowest possible back-off point can be established by stretching the string and using the stretch charts for drillpipe. This method gives only an approximate…

Backing-off procedure with top drive

A. Backing off stuck pipe - Preliminary remarks:

a. The neutral weight is calculated as the weight in air of the string above the stuck point.

b. In order to avoid unintentional b/o (back-off), the…

Back-Off Procedures

The conditions for a successful back-off are described below:

a) The string shot strength should be sufficient to back-off the pipe without causing damage to the pipe or the connection. The size of…

Stretch graph for 3.5" and 5" Drilll Pipe

Stretch graph for 3.5

Stretch graph for 3.5" and 5" Drilll Pipe are presented below:

Stretch graph for 3.5" Drilll Pipe

Stretch graph for 5" Drilll Pipe

Backing off Procedures

The string shot size shall be determined by the Logging Engineer so that it will be large enough to back-off the joint to be released without splitting the pipe. If the pipe does not back-off after…