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Details
Named Semantic Graph
- Name
- Rubber-banding of logs
- Goal
- Convey TVD uncertainty in logging depth.
- Description
- A set of MWD logs is to be compared to wireline logs. The MWD and Wireline log sets were measured with a different depth measurement systems, each subjected to independent stretch errors. One of the measured depths has to be stretched or shrunk by matching similar features across the MWD and wireline logs.Example from Dashevskiy et al., 2008, Dynamic Depth Correction to Reduce Depth Uncertainty and to Improve MWD/LWD Log Quality, SPE Drilling and Completions, page 13-22
Statements
| Subject | Subject Category | Predicate | Object | Object Category |
|---|---|---|---|---|
| Wellbore #1 | DDQUD.Drilling.WellBore | has an actual operation | Operation (drilling) #1 | DDQUD.Drilling.ActualOperation |
| WL Logging Tool #1 | DDQUD.Drilling.FormationLoggingTool | formation logging tool has a formation log | WL log #1 | DDQUD.Drilling.FormationLog |
| DrillString #1 | DDQUD.Drilling.DrillString | has a formation logging tool | LWD #1 | DDQUD.Drilling.FormationLoggingTool |
| Wellbore #1 | DDQUD.Drilling.WellBore | has an actual operation | Operation (wireline) #1 | DDQUD.Drilling.ActualOperation |
| LWD #1 | DDQUD.Drilling.FormationLoggingTool | formation logging tool has a formation log | LWD log #1 | DDQUD.Drilling.FormationLog |
| WL Logging Tool #1 | DDQUD.Drilling.FormationLoggingTool | formation log is corrected using real time signal | Depth Correction #1 | DDQUD.Drilling.DepthCorrection |
| WireLine #1 | DDQUD.Drilling.WireLine | has a formation logging tool | WL Logging Tool #1 | DDQUD.Drilling.FormationLoggingTool |
| DrillString #1 | DDQUD.Drilling.DrillString | belongs to actual operation | Operation (drilling) #1 | DDQUD.Drilling.ActualOperation |
| Corrected LWD log #1 | DDQUD.Drilling.FormationLog | is corrected from formation log | LWD log #1 | DDQUD.Drilling.FormationLog |
| WL Logging Tool #1 | DDQUD.Drilling.FormationLoggingTool | formation log is corrected using real time signal | Depth Correction #2 | DDQUD.Drilling.DepthCorrection |
| Wellbore #1 | DDQUD.Drilling.WellBore | formation logging tool has a formation log | Corrected LWD log #1 | DDQUD.Drilling.FormationLog |
| WireLine #1 | DDQUD.Drilling.WireLine | belongs to actual operation | Operation (wireline) #1 | DDQUD.Drilling.ActualOperation |
| Corrected LWD log #1 | DDQUD.Drilling.FormationLog | is corrected using formation log | WL log #1 | DDQUD.Drilling.FormationLog |
Nodes
Plain english description
| Wellbore #1 is of type DDQUD.Drilling.WellBore |
| Operation (drilling) #1 is of type DDQUD.Drilling.ActualOperation |
| Wellbore #1 has an actual operation Operation (drilling) #1 |
| WL Logging Tool #1 is of type DDQUD.Drilling.FormationLoggingTool |
| WL log #1 is of type DDQUD.Drilling.FormationLog |
| WL Logging Tool #1 formation logging tool has a formation log WL log #1 |
| DrillString #1 is of type DDQUD.Drilling.DrillString |
| LWD #1 is of type DDQUD.Drilling.FormationLoggingTool |
| DrillString #1 has a formation logging tool LWD #1 |
| Operation (wireline) #1 is of type DDQUD.Drilling.ActualOperation |
| Wellbore #1 has an actual operation Operation (wireline) #1 |
| LWD log #1 is of type DDQUD.Drilling.FormationLog |
| LWD #1 formation logging tool has a formation log LWD log #1 |
| Depth Correction #1 is of type DDQUD.Drilling.DepthCorrection |
| WL Logging Tool #1 formation log is corrected using real time signal Depth Correction #1 |
| WireLine #1 is of type DDQUD.Drilling.WireLine |
| WireLine #1 has a formation logging tool WL Logging Tool #1 |
| DrillString #1 belongs to actual operation Operation (drilling) #1 |
| Corrected LWD log #1 is of type DDQUD.Drilling.FormationLog |
| Corrected LWD log #1 is corrected from formation log LWD log #1 |
| Depth Correction #2 is of type DDQUD.Drilling.DepthCorrection |
| WL Logging Tool #1 formation log is corrected using real time signal Depth Correction #2 |
| Wellbore #1 formation logging tool has a formation log Corrected LWD log #1 |
| WireLine #1 belongs to actual operation Operation (wireline) #1 |
| Corrected LWD log #1 is corrected using formation log WL log #1 |