IAT measures open hole formation conductivity & spontaneous potential (SP)
In determining open hole formation resistivity, the IAT transmits an alternating magnetic field into the formation and measures the real and quadrature response from an array of 7 receivers. Measuring both signals enables the IAT to compensate for skin effect. The improved response provides invasion profiling and allows water saturation to be calculated. The tool also measures Spontaneous Potential (SP). The IAT can be transported easily, since it can be broken down to less than 10 feet. The attractively short design requires less overhole drilling, too.
- 5 depths of investigation
- 2ft and 4ft depth resolution output
- Transport flexibility - it can be broken down to less than 10ft for transport
- SP incorporated into the design
- An attractively short design, requiring less overhole to be drilled
Benefits of IAT
The IAT determines the formation resistivity, using the real and quadrature signals induced in the formation. By using both signals for each coil combination, the tool is ideally equipped to compensate for skin effect. This provides a more accurate tool response. This improved response, in turn, allows for better invasion profile determination, in addition to precise water saturation calculations.