TVision Analysis Software

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Aiding analysts in 3D interpretation of data from mechanical caliper, magnetic flux leakage, and ultrasonic logs

Applications

  • Viewing interpreted data from arraytype logging tools (multiple radial measurements) where static conventional log presentations are difficult or impossible to evaluate
  • Visualizing data obtained from the MSC/MIT (24 to 60 individual radius measurements), CIT (30 to 80 individual magnetic flux measurements), and the URS (72 individual radius/thickness measurements)

Features and Benefits

  • TVision analysis software provides an interactive, three-dimensional view of the well that enables analysists to visually explore the well log data and identify problems such as wall loss and deformation (for example, buckling, ovality, or parted casing) and that enables the operator to identify a problem area within the wellbore and then develop a remediation plan.
  • A cross-section representation of the well, including cross-section magnification, can provide an interactive view of the remaining wall thickness and the clearance diameter at a specified depth, providing valuable information to determine the largest diameter that can pass through a deformation.
  • The visual presentation of a log plot of the well—including analysis output parameters such as casing ovality, casing offset, calculated strain, clearance diameter, remaining wall percentage, and 48-inch drift diameter—can be provided in greater detail than on conventionally printed reports and helps to determine the maximum diameter through which a drift can safely move and the cause of a casing deformation.
  • The TVision software produces interactive and graphical cross-sectional and three-dimensional plots of the casing inside diameter (ID) for easy identification of anomalies and advanced interpretation of casing deformations.
  • TVision maintains and processes all information—including collars and hardware—to visualize all aspects of the wellbore for thorough analysis.

Tool Description

Weatherford TVision analysis software displays, computes, and interprets data derived from the multisensor caliper (MSC™) tool, the casing imaging tool (CIT), the multifinger imaging tool (MIT), and the ultrasonic radial scanner (URS). The data is rendered in a three-dimensional interactive presentation including plate and cylindrical views, various contour modes, and section magnification. The visualization of the data enables the operator to identify features that are not readily apparent in the static, hard-copy field print of the log data. 

Data is analyzed and computed to provide interpreted responses, which are then loaded into the TVision software. The data, such as caliper measurements of the inside diameter of the casing, is then presented as a three-dimensional image. Analysis techniques can display deformation and bending anomalies. The analysis package can also graphically portray the casing as a two-dimensional cross section or three-dimensional image to highlight anomalies. 

TVision analysis software classifies each casing joint with respect to the worst-case defect found and provides a convenient joint-by-joint well summary. Weatherford TVision software analyzes data from the MSC tool using a unique, calibrated, deconvolution caliper-trajectory algorithm to infer local axis deformation or well trajectory. This can assist in wellbores where geomechanically or thermally induced movement is causing structural deformations. The algorithm quantifies the transverse deformation of the casing axis to provide a three-dimensional image of the deformation.