Since the application of slickline technology for wellbore intervention, the need for a measurement device to determine not only strain on the wire but forces applied to the toolstring at depth has been required.

What stands between a successful intervention and a ‘miss-run’ is the skill of the slickline operator and the surface weight indicator known as a load cell.

This paper will address the lesson learned from applying ‘Impact Sensors’ to slickline toolstrings in over 100 applications since it's launch in September 2005. The paper will also cover a case study that utilized the technology to better understand downhole conditions and their effects on toolstrings of various geometries. Completion technology has altered greatly and the results of directional drilling technology and horizontal completion architecture have proven to enhance the delivery of hydrocarbons to surface.

The application of new technology has been implemented by the Electric Line, Coil Tubing, Drilling, Reservoir Analysis and other groups in the industry, however the application of new technology to the slick line intervention business has been greatly lacking and because of this many completion engineers develop completion installation programs with the least amount of wire in the hole as possible.

Much of this reluctance is due to the perceived risk associated with deploying slick line into the well bore where an ‘unknown event’ may cause irreparable damage to the completion system or at the very least a costly exercise in equipment recovery.

The application of impact sensors to the slick line toolstring eliminates much of associate unknown risk factors by supplying the operator with known parameters being applied at depth.

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