Essential Agreement to Get Robust Analysis of Production Logging in Horizontal Wells

Abstract

Understanding and predicting the behavior of multiphase flows from carbonate reservoirs is of paramount importance in oil and gas exploration and production. However, the complexity of these interpretations, often due to lack of agreement and variations in parameters for consideration, present significant challenges. Traditional techniques relying on the expertise of each analyst are often insufficient, necessitating the development of more refined workflow, particularly for horizontal and deviated wells where fluid dynamics introduce further complexity. This paper elucidates a method for profiling multiphase flows in horizontal wells using array or Multiple Probe Tools, which provide distributed velocity and hold-up measurements across the pipe. This methodology improves upon conventional Production Logging (PL) interpretation, reducing the reliance on multiphase flow correlations and providing a more accurate understanding of the production or injection profile (Tveritnev,2023). We discuss in detail the principles, calculations, and assumptions behind this method, its advantages over traditional approaches, and the impact of reservoir heterogeneity and fluid properties on the interpretation. Real-world examples and theoretical models are used to further illustrate the application of this approach, providing insights into the complex dynamics of multiphase flows in carbonate reservoirs. Finally, potential pitfalls and challenges in the interpretation of PL data are highlighted, along with solutions and recommendations for more accurate reservoir characterization.