Glassory
Response times: Professional and Enterprise plans receive priority support with a 4-hour response target during UK business hours.
Reference
Glossary
| Term | Definition |
|---|---|
| AZI | Azimuth. The compass direction of the wellbore, measured in degrees clockwise from North. |
| BHA | Bottom Hole Assembly. The lower portion of the drill string, including drill bit, stabilisers, MWD/LWD tools, and motor or RSS. |
| DLS | Dogleg Severity. The rate of change of well direction, expressed as degrees per 30 m (metric) or degrees per 100 ft (imperial). |
| GR | Gamma Ray. A petrophysical log measuring natural radioactivity of the formation. High GR typically indicates shale; low GR indicates sand, carbonate, or evaporite. |
| INC | Inclination. The angle of the wellbore from vertical, measured in degrees. |
| KB | Kelly Bushing. The datum at the surface from which measured depth (MD) is referenced on most wells. |
| LAS | Log ASCII Standard. A standard file format for storing petrophysical well log data. |
| LookAhead | GeoMaster module that projects the geological model ahead of the drill bit based on the current interpretation. |
| LWD | Logging While Drilling. Measurement tools integrated into the BHA that acquire formation data in real time as the well is drilled. |
| MD | Measured Depth. The depth of the wellbore measured along the actual path of the well, from the surface reference (KB, MSL, or LAT). |
| MWD | Measurement While Drilling. Tools in the BHA that transmit directional data (inclination, azimuth, tool face) and basic drilling parameters in real time. |
| NOC | Network Operations Centre (in the context of WITSML data routing — the infrastructure hub through which wellsite data is transmitted to remote users). |
| RSS | Rotary Steerable System. A directional drilling tool that steers the bit while rotating, enabling smoother wellbore geometry than a mud motor. |
| TST | True Stratigraphic Thickness. Formation thickness measured perpendicular to the formation dip. The correct thickness measurement for deviated and horizontal wells in dipping formations. |
| TVD | True Vertical Depth. The vertical depth of the wellbore, measured from the surface datum. |
| TVDSS | True Vertical Depth Sub-Sea. TVD measured from mean sea level (MSL), used when comparing formation depths across wells with different KB elevations. |
| TVT | True Vertical Thickness. Formation thickness measured in the vertical direction. Appropriate for near-vertical wells in flat-lying formations. |
| UWI | Unique Well Identifier. A standardised alphanumeric code that uniquely identifies a well. |
| WITSML | Wellsite Information Transfer Standard Markup Language. The industry standard protocol for transmitting drilling and logging data from wellsite to remote systems. |
Keyboard Shortcuts
| Shortcut | Action |
|---|---|
Ctrl + / | Open keyboard shortcut reference |
Ctrl + S | Save current changes |
Ctrl + Z | Undo last action |
Ctrl + Shift + Z | Redo |
+ / - | Zoom in / out on cross-section |
R | Reset cross-section view to default zoom |
H | Toggle formation layer labels on/off |
L | Toggle log tracks on/off |
Space | Pan mode (click and drag to move cross-section) |
Esc | Cancel active tool or selection |
Supported Data Formats
| Format | Used For | Import Location |
|---|---|---|
| CSV (MD, INC, AZI) | Survey / trajectory data | Data → Surveys |
| LAS 2.0 | Petrophysical logs | Data → Logs → Import LAS |
| Petrel export | Trajectories, formation tops | Data → Import → Petrel Format |
| WITSML 1.4.1.1 / 2.0 | Real-time drilling and log data | Project Settings → WITSML |
| CSV (generic) | Custom log data, formation tops | Data → Import → CSV |
| PNG / PDF | Cross-section and report export | Export button in each module |
Frequently Asked Questions
Q: Can I use GeoMaster without a live WITSML connection? Yes. GeoMaster works fully with imported static data (LAS, CSV surveys, Petrel exports). WITSML integration is optional and used when working on active wells.
Q: Is my data stored securely? All project data is encrypted in transit (TLS) and at rest. GeoMaster is hosted on AWS with automated daily backups. For enterprise data residency requirements, contact support@geomaster.uk.
Q: Can I export my data if I cancel my subscription? Yes. You can export all project data (logs, surveys, formation tops, reports) at any time from Data → Export All. We recommend doing this before cancelling.
Q: Does GeoEngine store my conversations? GeoEngine chat history is stored against your project and is visible to all project team members. Conversations are retained for the lifetime of the project.
Q: What happens to my projects if I downgrade my subscription? Projects that exceed your new plan's project limit become read-only. You will not lose data — you can re-activate by upgrading or archiving excess projects.
Support
| Channel | Details |
|---|---|
| Email support | support@geomaster.uk |
| In-app help | Click the ? icon in the top-right of any workspace page |
| Documentation | docs.geomaster.uk |
| Data Protection Officer | dpo@geomaster.uk |
Response times: Professional and Enterprise plans receive priority support with a 4-hour response target during UK business hours. Starter plan support is handled within 2 business days.
GeoMaster Help Centre — Version: Soft Launch (June 2026)© GeoMaster / Greenstone Energy Ltd. Company No. 17151768, All rights reserved.