What is a safe way to support the dynamometer cable during pumping
unit operation and dynamometer data acquisition?
The dynamometer cable can become tangled in wellhead connections as
the pumping unit polished rod and load cell travels up and down. The
dynamometer cable attaching the load cell to the data acquisition box
should be protect from being entangled with wellhead connections by
supporting the cable in such a manner that the cable will not be caught
by wellhead connections during polished rod movement. One end of the
coiled dynamometer cable is connected to the load cell. In the picture
below, the load cell is the polished rod transducer that attaches to
the polished rod and measures the change is diameter of the polished
rod and converts this change in diameter into a change in load. The
other end of the coiled cable is suspended midway up the ladder or
Sampson post. The far end on the coiled cable is attached to the
25-foot cable that is connected to the Well Analyzer. This setup is a
safe way to protect the dynamometer cable, the cable connectors and the
connector on the load cell.
