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

In order to offer reference to completion decision making for horizontal multilateral wells, the open hole series completion system are considered as a main research object in a new deliverability forecasting model. This model, which takes herringbone well for an example, couples reservoir inflow with wellbore flow and is soluted 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 are obtained. What’s more, production under different completion methods is compared with each other. Through analysis and study, it’s known that, firstly, seepage interference within multilateral well restrain total production, whose degree depends on herringbone well configuration, filtrational resistance and mining intensity. Secondly, completion system influences both flow rate distribution and flowing pressure distribution because completion screen pipe in the well bore 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.