Abstract
Tests of a developed system for measuring deviation of drill holes reveal its shortcomings. Regarding subhorizontal holes, the key problem is measurement of inclinations and deviations from vertical line at a huge number of points (up to 200) by the measuring device moving inside a casing string to 100 m long. The authors analyze influence of different-type data channels on reliability, accuracy and stability of the data recording in the system based on analog and digital signal converters. Applicability of liquid and solid-state integral deviation sensors for pointing of the down-the-hole measuring device is discussed. The paper proposes to use digital microprocessor methods for measuring and converting signals with software support at the upper and lower levels of the deviation determination system.
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