DDRAG is a field-proven model that computes torque and drag on drillstrings, casing and tubing. It can be used for planning deviated and horizontal wells, as well as monitoring their progress as they are drilled. The program has been proven time and again as a powerful and effective tool for predicting tight hole and insufficient hole cleaning, and has reduced field costs and saved time worldwide on a great variety of operations.
DDRAG is among the most widely used software applications in the petroleum industry. It can use either the soft- or stiff-string models to predict tight holes and insufficient hole cleaning, as well as calculate wellbore friction factors.
 View QuickTour of DDRAG
Advanced Engineering Features
- Calculates torque and drag for pickup, slack-off, drilling and rotation off bottom
- Can use either soft or stiff string model
- Calculates hook loads and surface torque
- Predicts cased- and open-hole friction factors
- Indicates the onset of sinusoidal- and helical buckling
- Warns when the limiting yield stress is reached
- Sensitivity analysis for all controllable parameters
- Operating margin determination
- Accepts directional well plans and surveys
- In planning, wellbore surveys can be "tortured" to simulate real well conditions
- Can be used for drilling, completion, and running casing
- Includes extensive database of tubulars
Cost Saving
- Avoids drill-string failures
- Can prevent stuck pipe situations
- Determines operational limits
- Can be used to indicate insufficient hole cleaning
- Enhances operational efficiency
Easy to Use
- Step-by-step problem solving approach
- Can link to databases such as DIMS
- Can create MS Office reports
- Advanced graphics can be exported to any Windows program
- S.I., Oilfield and mixed units
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Sensitivity analysis: up to seven controllable parameters may be investigated
DDRAG can calculate exact operating margins for your operation.
A variety of useful graphs are generated by DDRAG, and can be saved in MS Office format. |