Slim Sector Bond Tool

Contact

Provides an improved method to azimuthally evaluate the cement bond around the casing in a package that can go through tubing

Applications

  • Determining the quality and vertical length of cement bond to casing andformation
  • Identifying channels in cement
  • Operating in thru-tubing environments

Features and Benefits

  • Six sector measurements provide full circumferential resolution of the casing-cement interface, identifying the presence and geometry of a channel in the cement.
  • Standard cement bond log (CBL) 3-ft and 5-ft measurements are supported by the six sector measurements for obtaining reliable bond data.
  • The slim Sector Bond (SSB) tool can be flasked to raise the maximum rated temperature to 420°F (215°C). That enables the SSB tool to log wells that very few tools can log because of temperature constraints.
  • The relatively low-frequency measurements of the SSB tool are less affected by casing corrosion and pipe thickness changes than are measurements of ultrasonic tools. Therefore, the SSB tool is an alternative tool for bond logging in mature wells, where the casing is more likely to have degraded.
  • The SSB tool is a proven performer in high-temperature, high-angle, highpressure, and thru-tubing environments in either water- or oil-based mud.

Tool Description

The Weatherford slim Sector Bond (SSB) tool provides quality data for analyzing the cement bond to casing and to the formation, as well as the vertical length of these bonds. The SSB tool indicates the quality of the cement bond around the circumference of the casing. A single monopole transmitter and eight receivers provide traditional 3-ft and 5-ft amplitude, travel time, waveform data, and six individual sector measurements that reveal the distribution of the cement around the pipe. The six sector receivers—spaced 2 ft apart longitudinally and at 60˚ intervals circumferentially—functionally scan the circumference of the casing for the presence or absence of cement. Additionally, the 3-ft and 5-ft receivers provide traditional amplitude, travel time, signature, and variable density log (VDL) measurements. The sector and 3-ft data provide the cement-to-casing bond measurement; the 5-ft data provides the cement-to-formation bond measurement.