| 
                        Trajectory #1
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        has a
                     | 
                    
                        Stratigraphic column #1
                     | 
                    
                        DDQUD.Subsurface.Stratigraphy
                     | 
                
                
                    | 
                        Stratigraphic column #1
                     | 
                    
                        DDQUD.Subsurface.Stratigraphy
                     | 
                    
                        is estimated using
                     | 
                    
                        Depth Stack #1
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                
                
                    | 
                        TVT parameter #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                    
                        has a
                     | 
                    
                        Uncertainty map #N
                     | 
                    
                        DDQUD.Drilling.Uncertainty
                     | 
                
                
                    | 
                        Depth Stack
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                    
                        has top
                     | 
                    
                        Surface
                     | 
                    
                        DDQUD.Subsurface.FormationTop
                     | 
                
                
                    | 
                        Trajectory #1
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        has a
                     | 
                    
                        Geo pressure prognosis #1
                     | 
                    
                        DDQUD.Drilling.Prognosis
                     | 
                
                
                    | 
                        Stratigraphic column #1
                     | 
                    
                        DDQUD.Subsurface.Stratigraphy
                     | 
                    
                        has a
                     | 
                    
                        Uncertainty #1
                     | 
                    
                        DDQUD.Drilling.Uncertainty
                     | 
                
                
                    | 
                        Depth Stack #1
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                    
                        is a
                     | 
                    
                        Depth Stack
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                
                
                    | 
                        Geo pressure #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                    
                        has a
                     | 
                    
                        Alternative geo pressure #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                
                
                    | 
                        Depth Stack #1
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                    
                        has top
                     | 
                    
                        Surface #1
                     | 
                    
                        DDQUD.Subsurface.FormationTop
                     | 
                
                
                    | 
                        Trajectory #4
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        is estimated using
                     | 
                    
                        Confidence Factor #1
                     | 
                    
                        DDQUD.Drilling.ConfidenceFactor
                     | 
                
                
                    | 
                        Trajectory #1
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        belongs to
                     | 
                    
                        Planned Operation #1
                     | 
                    
                        DDQUD.Drilling.PlannedOperation
                     | 
                
                
                    | 
                        Trajectory #1
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        has lower vertical bound
                     | 
                    
                        Trajectory #4
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                
                
                    | 
                        Geo pressure prognosis #1
                     | 
                    
                        DDQUD.Drilling.Prognosis
                     | 
                    
                        is estimated using
                     | 
                    
                        Depth Stack #1
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                
                
                    | 
                        Uncertainty #1
                     | 
                    
                        DDQUD.Drilling.Uncertainty
                     | 
                    
                        is estimated using
                     | 
                    
                        Confidence Factor #1
                     | 
                    
                        DDQUD.Drilling.ConfidenceFactor
                     | 
                
                
                    | 
                        Wellbore #1
                     | 
                    
                        DDQUD.Drilling.WellBore
                     | 
                    
                        has a
                     | 
                    
                        Trajectory #1
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                
                
                    | 
                        Trajectory #5
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        is estimated using
                     | 
                    
                        Confidence Factor #1
                     | 
                    
                        DDQUD.Drilling.ConfidenceFactor
                     | 
                
                
                    | 
                        Depth Stack
                     | 
                    
                        DDQUD.Subsurface.DepthStack
                     | 
                    
                        has a
                     | 
                    
                        Layer #N
                     | 
                    
                        DDQUD.Subsurface.Formation
                     | 
                
                
                    | 
                        Layer #N
                     | 
                    
                        DDQUD.Subsurface.Formation
                     | 
                    
                        has a
                     | 
                    
                        TVT parameter #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                
                
                    | 
                        Alternative geo pressure #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                    
                        has a
                     | 
                    
                        Uncertainty map #N
                     | 
                    
                        DDQUD.Drilling.Uncertainty
                     | 
                
                
                    | 
                        Layer #N
                     | 
                    
                        DDQUD.Subsurface.Formation
                     | 
                    
                        has a
                     | 
                    
                        Geo pressure #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                
                
                    | 
                        Trajectory #1
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                    
                        has higher vertical bound
                     | 
                    
                        Trajectory #5
                     | 
                    
                        DDQUD.Drilling.Trajectory
                     | 
                
                
                    | 
                        Geo pressure prognosis #1
                     | 
                    
                        DDQUD.Drilling.Prognosis
                     | 
                    
                        is estimated using
                     | 
                    
                        Confidence Factor #1
                     | 
                    
                        DDQUD.Drilling.ConfidenceFactor
                     | 
                
                
                    | 
                        Geo pressure #N
                     | 
                    
                        DDQUD.Drilling.Parameter
                     | 
                    
                        has a
                     | 
                    
                        Uncertainty map #N
                     | 
                    
                        DDQUD.Drilling.Uncertainty
                     |