System and method for well data analysis

A system for performing a drilling operation, comprising:

• at least one carrier configured to be disposed in a borehole in an earth formation;
• a plurality of sensors configured to measure parameters associated with the operation;
• and
• a processor configured to perform:
• receiving a data set representing parameter values generated during at least a portion of the operation, the parameter values including values of a plurality of parameters relating to the operation;
• dividing the data set into a plurality of data subsets, each data subset including values for multiple parameters;
• determining a measure of similarity between data in each subset relative to data in one or more other subsets;
• displaying a map of the data set in at least two dimensions, the map including a visual representation of each subset positioned relative to a visual representation of the one or more other subsets based on the measure of similarity, each visual representation having a position relative to one or more other visual representations and a proximity to the one or more other visual representations based on the measure of similarity;
• analyzing the map to estimate a condition associated with the operation, wherein analyzing includes identifying a group of visual representations representing subsets having at least one similar parameter, and estimating the condition based on a shape or structure formed by the group of visual representations;
• and
• adjusting a parameter of the drilling operation based on analyzing the map.