The 3 1/8in UW RBT evaluates cement bond integrity. A slotted sleeve technology provides superior isolation, rigidity and tool strength. 8-segmented piezoelectric crystal sensors detect the minutest of channels. The UW RBT is Memory/SRO capable and combinable with any of the complete range of Ultrawire™ tools. These advantages make the UW RBT a superior bond tool.
Description
The Radial Bond Tool measurement is based upon the principle of Sonic Wavetrain Attenuation. A traditional Cement Bond Log (CBL) measures the amplitude of a sonic signal passing along the casing; the signal is reduced where the casing is bonded to the cement. While cement bonds that are either complete, or totally absent, can be clearly identified, signals showing partial bonds provide insufficient data to determine hydraulic isolation. The Radial Bond Tool overcomes this problem by using 8-receivers positioned circumferentially around the tool. Each receiver provides bond data covering a sector of the casing, generating a 'map' of the cement in addition to a conventional CBL.
Features
Cement bond evaluation
- Simultaneous cement bond and casing inspection
- Horizontal/deviated hole investigations (for example, combined with the Ultrawire™ inclinometer tool to determine high-side)
- Combines with other Ultrawire™ tools (for example, the casing inspection suite)
