2.
n. [Well Workover and Intervention]
The process of performing major maintenance or remedial treatments on an oil or gas well. In many cases, workover implies the removal and replacement of the
production tubing string after the well has been killed and a workover
rig has been placed on location.
Through-tubing workover operations, using
coiled tubing,
snubbing or
slickline equipment, are routinely conducted to complete treatments or well service activities that avoid a full workover where the tubing is removed. This operation saves considerable time and expense.