SBT-Segmented Bond Tool
Divides casing, cement annulus and formation into six segments acquiring full wave train and analyzing cement bond between the formation and cement annulus
The Segmented Cement Bonding Tool (SBT) is a new type cement bond logging tool. The tool divides casing, cement annulus and formation into six segments.
The sensors are pushed against well wall for measurement to achieve high accuracy, unaffected by casing fouling, micro annulus, fast formation and mud property change. Cement image accurately reflects detailed cement groove and void.
The VDL is at the bottom of the tool string, acquiring full wave train and analyzing cement bond between the formation and cement annulus.
The CCL and GRT correct depth, providing accurate depth information for acoustic signal.
Cement bond quality measurement between casing and cement annulus (first interface)
Cement bond quality measurement between cement annulus and formation (second interface)
Gamma ray measurement for depth correction
OD 3 1/2"（89mm）
Bond quality evaluation of the first interface
VDL wave acquisition