Application of New Conceptual Approach to Well Log Data Processing and Interpretation in High Angle and Horizontal Wells

High angle and horizontal well logging data applications are currently limited due to various physical effects distorting log readings. The proposed new conceptual approach targets uncertainty reduction and value of information increase in extended-reach wells. Log curves processing is performed using multi-scale geological and geophysical information integration considering horizontal well and layer system geometry, wellbore condition and adjacent beds screen effects. Processing results in geophysical layered Earth model and its projection on the well trajectory in the form of square logs. These square logs are resulting from raw data reduction to zero-diameter wellbore and tools of zero volume of investigation conditions using forward-modelling techniques (e.g. Techlog 3DP), and thus, do not require any extra petrophysical interpretation model adjusting, comparing to the one has developed for vertical wells data. The specific aspects of log data acquisition in high angle and horizontal wells if carefully taken into account and combined with multidisciplinary collaboration provide the basis for geological and geophysical data interpretation and media properties obtaining approach improving in horizontal drilling conditions, optimising data streams, and improving methodological and software solutions for effective decision making.