| The newest generation Circumferential Acoustic Scanning tool, the CAST-V made by Halliburton, provides a wealth of information in both open and cased holes. In cased holes, ultrasonic pipe inspection and cement evaluation can now be obtained simultaneously. In open holes, the CAST-V provides complete borehole imaging for accurate formation evaluation.
Operating over a wide range of downhole environments, the CAST-V data can be presented in a variety of two- and three- dimensional formats. Powerful, yet user-friendly imaging analysis software is available to process the images, histograms and curve-type data.
Primary applications include:
|CAST-V – A COST-EFFECTIVE TOOL
FOR CASING INSPECTION AND CEMENT EVALUATION.
CAST-V has been used by Vietsovpetro L&TD for casing inspection and cement evaluation.
Cased hole diagnostic applications provide the following information:
- Detailed radial caliper information, precise perforation location,
- Casing damage inspection, corrosion effects description, real pipe wear identification.
- Evaluation of complex and lightweight cement
|This plot of casedhole logs displays VDL in Track 3 and Impedance map in Track 5. They clearly indicate that interval 2440-2532 m, cement bonding is poor, the lower shows good bonding.|
|This plot of casedhole logs displays I.D map in Track 4 and Thickness map in Track 6. They clearly indicate corrosions in interval 1060-1100m|