摘要：Well inflow modelling in different numerical simulation approaches are compared for a multi-lateral well.Specifically radial wells will be investigated, which can becreated using Radial Jet Drilling (RJD). In this technique,powerful hydraulic jets are used to create small diameter laterals (25–50 mm) of limited length (up to 100 m) from a well.The laterals, also called radials, leave the backbone at a 90◦angle. In this study we compare three numerical simulatorsand a semi-analytical tool for calculating inflow of a radialwell. The numerical simulators are FE approaches (CSMPand GOLEM) and an FV approach with explicit well model(Eclipse®). A series of increasingly complex well configurations is simulated, including one with inflow from a fault. Although all simulators generally are reasonably close in termsof the total well flow (deviations < 4 % for the homogeneouscases), the distribution of the flow over the different partsof the well can vary significantly. Also, the FE approachesare more sensitive to grid size when the flow is dominatedby radial flow to the well since they do not include a dedicated well model. In the FE approaches, lower dimensionalelements (1-D for the well and 2-D for the faults) were superimposed into a 3-D space. In case the flow is dominatedby fracture flow, the results from the FV approach in Eclipsedeviates from the FE methods.
