CRITERIA SYSTEM FOR COMPARISON AND EVALUATION OF VARIOUS DRILLING RIGS TYPES APPLICABILITY UNDER SEVERE CLIMATIC CONDITIONS

Abstract

The article provides an analysis of existing multicriteria assessment methods. The hierarchy analysis method developed by T. Saati and the expert assessment method is proposed to structure the complex task of comparing and assessing the applicability of various drilling rigs types to extend the drilling season in severe climatic conditions under the influence of ice loads. The priority of the criteria for the hierarchy analysis method is based on an expert survey. The application of the expert assessment method allows taking into account the existing experience in the design and operation of offshore drilling facilities. Weights were determined based on the results of an expert survey using a simple mathematical apparatus. The program was developed in MS Excel to obtain a numerical assessment of criteria preferences. The results of the study can be used by design organizations at an early stage of design, i.e. for the conceptual stage of project development, with a significant lack of climatic and geological information about the construction site. The obtained results allow us to determine the most objective and effective form of choosing an acceptable option for the offshore structures construction, taking into account the possible minimization of its cost, ensuring safety and reliability for the entire operational period.