A workover is that the process of maintaining, repairing or enhancing production from a well through various means. Most workovers require the assembly tubing string to be pulled from the well by the workover rig so as to repair the defects which will be causing sub-optimal well production. the assembly tubing is inserted back to the well once the defects are repaired. In some cases, a workover is performed so as to hold out hydrofracking and acidizing.

The following are common workover tasks that we perform.

• Subsurface pumping. Subsurface pumps are required within the overwhelming majority of the onshore oil producing wells in India. These pumps have a finite life and are routinely replaced, on the average , every 12 months
• Remedial cementing. Frequently, cementing operations are administered on existing wells to shut off water or unwanted gas production.
• Tubing replacement. Most workovers require the assembly tubing string to be pulled from the well. As a result, production tubing must get replaced as a part of the workover process. Well cleanout. This entails the removal of debris, sand, scale and organic materials from a well to enhance the flow of hydrocarbons to the surface. Many reservoirs produce sand that's not carried to surface by the flow of hydrocarbons during production. The resulting accumulations can decrease production and are cleaned out periodically.
• Re-completion. Downhole completion hardware is exposed to materials like corrosive water, sand, scale, tar which may clog and damage equipment.
• Re-completing a well may mean extracting the hardware and repairing or replacing it, partially or in its entirety. Alternatively, as downhole well conditions change over time (as a results of increased levels of watercut, for example) or as technology improves, different tools could also be used or artificial lift hardware could also be employed (such as electrical submersible pumps).
• Wells are often re-completed in several zones to reinforce production. Additional perforations or re-perforation. In certain oilfields it's possible to perforate additional intervals in hydrocarbon bearing reservoirs to extend production rates. In other reservoirs it's going to be possible to re-perforate an existing perforated interval that has become closed. New technologies also leave deeper penetrating perforating charges Workover services are primarily contracted on a rate per hour basis.