Analysis of the distributions of petrophysical characteristics of sections and their relationships with loss during drilling wells in old fields with anomalously low formation pressures

Abstract

The article is devoted to the study of the main factors that play an important role in the occurrence of such complications as lost circulation. The article presents the results of studies of the distributions of the petrophysical characteristics of the reservoirs and their influence on the occurrence of losses, which made it possible to substantiate the tasks, ways to solve them and the nature of the initial information necessary for this; based on the methods of mathematical statistics and fuzzy cluster analysis, an assessment was made of the mutual correspondence of geological conditions and the severity of losses, which made it possible to justify the interval, the severity of losses and the choice of a way to deal with them. Keywords: abnormally low reservoir pressures; petrophysical characteristics; fuzzy cluster analysis; losses.