A deliverability analysis of herringbone well under open hole series completion system

Abstract

Open hole series completion system were considered as a main research object in a new deliverability forecasting model in order to offer reference to completion decision making for horizontal multilateral well. This model, which took herringbone well for example, coupled reservoir inflow with wellbore flow and was solute with a semi-analytical discretization theory. As a result of iterative operation, distribution profile of flow rate and flowing pressure as well as IPR curve of whole well were obtained. What's more, productions under different completion methods were compared. Through analysis and study, it's known that, firstly, seepage interference within multilateral well restrain total production, whose degree depends on herringbone well configuration, filtration resistance and mining intensity. Secondly, completion system influence both flow rate distribution and flowing pressure distribution because completion screen pipe in the wellbore affects drawdown of reservoir inflow and wellbore flow. Finally, well completion screen pipe and its running model should be selected based on technical and economic aspects.