Mine Surveying Control of Wells

Abstract

The article considers the problems of increasing the accuracy and reliability of processing of inclinometric and telemetric data. It provides the review of domestic and foreign references for the topic. It is noted that by no means all the tasks are solved methodically correctly and most effectively. The work proposes the method of processing the inclinometric survey data, which takes into account the data correlation of adjacent intervals. It also provides statistic solution of the task of determining the ellipsoid crossing, undetermined location of well bottom and design tolerance area. The algorithms proposed in the work are realized in program complex “Mining and geodetic networks and survey”. The analysis of error accumulation in determination of well bottom undetermined ellipsoid showed that calculation without taking into account the correlation of adjacent intervals underrates the final error, i.e. the size of undetermined ellipsoid by 20 – 40%. The determination of tolerance area sizes must be performed for a particular deposit or a group of deposits with similar mountainous and geological conditions. The increase in wellbore accuracy requires the increase of instrumental accuracy of telemetric and inclinometric devices.