Increasing the accuracy of geological model of the object with complicated fault system by horizontal wells engaging

Nowadays drilling horizontal wells for hydrocarbon deposits development is in great request, as it has number of economic and technological advantages. It should be noted, that correction of horizontal wells in geological modeling can be challenging, because the data from these wells has a number of features and data exception leads to substantial uncertainties. The article describes the methodology for using horizontal wells data, that improves the accuracy of geological model, and thus it increases accuracy of decision-making.
Materials and methods
3D modeling of geologic horizon in Petrel, industrial, geophysical, geological and technological investigations.
Results
The methodology for correction horizontal wells data in geological model is described in the article.
Сonclusions
The methodology for horizontal wells correction is prepared and tested to improve structural model and decrease the uncertainty of property parameters:
• detailed correlation of horizontal wells provides connection of time-equivalent layers in interhole dimension and correct compartmentalization,
• density image log interpretation in conjunction with additional investigation data affords to specify the location of faults and behavior of structure,
• correction of specific well log interpretation and applying it in property distribution increases accuracy of geological model. As a result, consulting the instructions provides conversion of well-formed geological model and flow assurance, it increases accuracy of decision-making.