Pay securely via Stripe. Choose your package and license duration.
10 days of full access, no credit card required. Get started right away.
Explore the TDH® Range
Choose the package that fits your engineering needs.
TDH-SDV
Fast, efficient data visualisation for recent operations and offset wells.
TDH-Jar
Cloud-based jar optimization with impact, impulse, limits, and reporting.
TDH-Core
Comprehensive torque, drag & hydraulics modelling with cloud-based flexibility.
TDH-Plus
Advanced modelling, additional casing wear, cementing & design modules.
TDH-Custom
Customised TDH solutions tailored to your exact specification.
Torque, Drag & Hydraulics Software
TDH® software brings well engineering analysis together in one intuitive platform, helping drilling engineers understand well behaviour, evaluate operating limits and make better-informed engineering decisions.
From torque and drag and hydraulics to casing wear, cementing, casing design and more, TDH allows engineers to model the well, explore different scenarios and understand how changes affect loads, limits and performance.
Designed for complex well engineering, TDH makes it easier to compare scenarios, identify engineering margins and communicate results clearly, supporting better decisions from well design through execution.
Browser-based, flexible and built around real engineering workflows, TDH can be used wherever engineers need it, without local installation.
Speed, Simplicity and Consistency
TDH is designed to give engineers speed, simplicity and consistency, making it quick to build models and focus on engineering decisions rather than the software.
It brings torque and drag, hydraulics, casing wear, cementing, casing design and other analyses together in one integrated platform, with tools for scenario comparison, sensitivity analysis and field data.
Advanced functionality supports real-world modelling, including friction modifiers, flotation, tortuosity, PVT-corrected hydraulics and complex fluid behaviour. Results can be quickly visualised, compared and reported, helping teams understand well behaviour from design through execution.
10 days of full access, no credit card required. Get started right away.
TDH® Package Options and Pricing
TDH-SDV
Static data viewer provides fast, efficient data visualisation for recent operations and offset wells.
✔️ Recognises standard LAS and ASCII formats
✔️ Time-based and depth-based logs supported
✔️ Fully customisable and saveable log templates
✔️ Quick & simple Time/Depth scale manipulation, in addition to 1-click “whole log” view
TDH-Jar
Optimized jar placement using the TDH platform’s best-in-class reporting functionality.
✔️ Impact
✔️ Impulse
✔️ Weight-on-bit operating ranges
✔️ Pull and slack-off limits vs latch settings.
✔️ Flexible output charts
✔️ Cloud Based
TDH-Core
Comprehensive torque, drag & hydraulics modelling with cloud-based flexibility.
✔️ Jar placement functionality
✔️ Torque, drag and buckling
✔️ Hydraulics (P&T corrected)
✔️ LAS file view and hindcasting
✔️ Flexible output charts
✔️ Cloud Based
TDH-Plus
Advanced modelling, additional casing wear, cementing & design modules.
✔️ Jar placement functionality
✔️ Torque, drag and buckling
✔️ Hydraulics (P&T corrected)
✔️ Casing wear
✔️ Cementing
✔️ Casing design
✔️ Flexible output charts
✔️ Cloud based
Other licence durations are available for 1, 3, 6 or 12 months.
TDH-Custom
Customised TDH solutions tailored to your exact specification. Example projects for real clients shown below.
TDH Custom Example 1
A client wanted to optimize placement of their innovative tools in the drill-string with one-click functionality. The brief tasked Merlin to develop a digital model of the tool operating mechanism from first principles, which would be used to define torque and drag roadmaps based on placement position and number of tools in the string. These models were then validated against actual measurements and observations in the field.
Following a successful validation process, TDH was modified to include a custom tool library and data inputs as well as new output reports, which streamline the tool placement process and make presentations of data to the client’s own customers simple and effective. This approach reduced the amount of time our client’s engineers spent optimizing tool placement and reduced the amount of time necessary to prepare technical reports and proposals for new opportunities.
TDH Custom Example 2
An independent tool provider wanted to incorporate their tool operating characteristics into TDH in order to streamline their modelling and customer proposal generation process. Custom tools were added as “drop down” options in the BHA input section, where individual tools could be specified as being part of the BHA, and their operating characteristics incorporated automatically.
TDH outputs were modified to replace spreadsheets which were used to collate data from different sources into one single location. TDH’s flexible output capability was used to generate a similar report automatically, without manual manipulation, allowing engineers to spend more time solving client problems.
Why Choose Merlin’s TDH® Software
- Browser-based with no installation required, including offline mode.
- Integrated engineering platform for torque & drag, hydraulics, casing wear, cementing and casing design.
- Advanced hydraulics including PVT, ECD, surge/swab and pressure analysis.
- Complete well modelling across trajectories, wellbore, strings and fluids.
- Scenario comparison & sensitivity analysis for rapid optimisation.
- Measured data integration for real-time comparison, hindcasting and model refinement.
Built for Real-World Engineering
- Real-world modelling including tortuosity, friction, flotation and complex fluids.
- Flexible reporting & visualisation with built-in templates.
- Customisable for specific tools and engineering workflows.
- Proven across industry with operators, service companies and tool vendors.
- Flexible licensing to suit different users and durations.
- Regular updates & expert support from experienced drilling engineers.
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10 days of full access, no credit card required. Get started right away.
TDH® Clients
TDH is used by operators, multinational and domestic service companies and tool vendors.
