Detector system of slickline irregularities

Abstract

Detector of Slickline Irregularities (DILA) is a electronic system to detect and assess irregularities in production wells or to a new slickline by measuring eddy currents or eddies or Foucault currents. The system lines can vary in diameter depending on the operation to be performed on each well. The electronic system includes an optical encoder, eddy current sensor, eddy current reader, an electronic module for data acquisition and a computer. The detector monitors the integrity of the slickline in the well, interprets and records the data for graphing and reduces failures in the slickline as a result of rupture caused by excessive stress or collisions within the producing wells, detects flattening and bending, lack of nickel coating, porosity and corrosion.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit and priority to Mexican application No. MX / a / 2012 / 007271 with a filing date of Jun. 21, 2012, the disclosure of which is incorporated herein by reference in its entirely.FIELD OF THE INVENTION[0002]The present invention named “Detector of Slickline Irregularities” (“DILA” for its acronym in Spanish) is within the field of the instruments used to measure or determine abnormalities in the slickline used to operate oil wells.BACKGROUND[0003]Among the many activities that take place in an oil well, there are those undertaken by Slickline area, which with a Motor Unit in which a spool is installed with a steel line (wire) with special tech specs, performs mechanical works such as installation and removal of tools, bottom inspections, etc.[0004]Slickline area, belonging to the Operative Base for Servicing Wells, operates mobile units carrying a slickline spool of special features in terms of geometry, strength...

AI Technical Summary

Benefits of technology

The present invention aims to provide a device that can adapt to different field units and monitor the status of a line before, during, and after an operation. This allows for timely cutting of damaged line sections. Additionally, the invention aims to reduce failures in the slickline caused by rupture, deformation, excessive effort, and collisions in various elements. This is achieved by passing the slickline from the spool to the bottom of the well.

Problems solved by technology

Due to the nature of these operations, the line is at risk of suffering changes, breakdowns, stretching or deformation caused either by rubbing the line with the other mechanical elements such as oilers, blowout preventers, etc., or chemical attack from sulfhydric gas or carbonic acid.

This may cause abnormalities in the line and increases the likelihood of breaking it during operation, which entails that the tools being used at that time are trapped within the well, so it is necessary to retrieve the tools lost at the bottom when the slickline breaks.

The difficulty of a fishing operation will depend on many factors, of which, one that complicates the most tool recovery is when rupture occurs in the moment in which the line has been lowered to a considerable depth, and when rupture occurs and recovery is to be performed, the presence of a large amount of tangled wire in the intermediate zone between the surface unit and the tool complicates the fishing operation.

In addition, there is an economic loss, since the line that was left downhole is practically unusable.

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