New approaches to simplification of integrated asset models

Abstract

The current trend in modeling of the development of oil and gas fields is the transition from models of individual elements of the production system to complex integrated asset models (IAM) of hydrocarbon production fields. The use of such models is especially relevant for the correct forecasting and management of hydrocarbon production in gas, gas condensate and oil and gas condensate fields, where the parameters of facility infrastructure determine the dynamics of production no less than wells and productive reservoirs. The complexity of integrated asset models is associated with the labor-intensive of its creation and the high requirements for computational and time resources required to create and maintain models. This article proposes approaches to increase the efficiency of calculations of integrated asset models while maintaining the quality of forecasting, which helps to increase the value of modeling and the degree of details of development of project solutions. A study of four integrated asset models configurations was carried out. Firstly, the operating features of a detailed integrated asset model are presented, and then methods for simplifying both the reservoir model and the gathering system model are described. For each model, key characteristics are given, as well as calculation algorithms. Through the example of a gas field, a numerical experiment was performed using all the considered configurations; a comparison of the main technological parameters of development was carried out, which showed similar results for all configurations. Based on the study, a conclusion was made about the possibility of using such simplified integrated asset models to perform operational, including multivariate calculations in addition to detailed integrated asset models.