The actual detection characteristics of the magnetic logging equipment are discovered in experiments, and the calibration method of the magnetic logging equipment is put forward.
Taking advantage of these consistencies, an innovative method is developed to detect and correct errors in the array resistivity logging tool raw measurements, and evaluate the quality of the data.
This configuration, which is a realistic idealization of an acoustic logging tool suspended in a fluid-filled borehole within a permeable surrounding formation, is of practical importance with a multitude of possible applications in seismo-acoustics.
We compute the experimental semi-variogram and upscale its range and sill to larger (several inches) scales of measurement to predict the impact of heterogeneity on conventional core plug and logging tool porosity measurements.
(3) Under quasi-in-situ (downhole) conditions, the azimuthal dependence of resistivity has been measured in horizontal planes using the Azimuthal Resistivity Imager (ARI), a down hole logging tool.
The meter can be carried by an operator and readings recorded manually; it can be towed behind an all-terrain vehicle to map in a preset grid; or it can be used randomly with a Global Positioning System and data-logging equipment to map large areas.
The logging tools enable developers to instrument C or C++ programs so that data indicating state changes can be logged automatically in a variety of formats.