From the 5th November 2020 the UK Onshore Geophysical Library office will be temporarily closed following Government guidelines regarding coronavirus.
All staff will be working from home during this period. For all enquiries please use either our email address (email@example.com) or email direct via the contact details here.
UKOGL have recently completed a project to improve the coverage of 2D SEGY format migrated seismic data available in UKOGL. Migrated hardcopy sections for 219 lines have been scanned and vectorised to SEGY and are now available for release. The lines were selected to ‘infill’ areas that previously lacked migrated SEGY data coverage.
The image below displays the 219 lines selected over England overlaid on top of the complete 2D onshore seismic coverage available through UKOGL.
The image below displays the new 2D data set (red lines) that improves and complements the comprehensive 2D migrated coverage (purple lines) already available in UKOGL; infilling areas that previously had limited SEGY format migrated data.
The migrated hardcopy sections were scanned and vectorised by Lynx Information Systems, output to SEGY and are now ready for workstation loading.
Well Layer Improvements and Two-Way Time Data Generation
UKOGL have improved the appearance and functionality of the
Well Layer displayed on the interactive map, the expanded selection options include
the ability to filter on the well category, wells that reach a certain depth
and wells that penetrate certain formations.
In addition, a new functionality has been embedded as an
option to generate estimated Two-Way Times (TWT) for wells that do not
currently have TWT data available through the site.
The well category display, search, filter and selection options
on the map can now be controlled via a single user selected ‘drop-down’ menu option,
which combines both the old “Well” layer and the old “Additional Selected
Boreholes” layer in to one layer that now removes the need to run the same query
twice across the two data sets.
All wells with TWT data can now be filtered on the display
via the menu to improve access to TWT information.
The UKOGL interactive web map now supports ‘on the fly’
generation of TWT data for wells that do not have TWT data currently available.
Using the mouse arrow select a well without TWT data then select the ‘DEPTHS’ – ‘Well Tops – View’ option to launch the well information page.
By selecting the ‘Two-Way Times’ option on the page a list
of ’near-by wells’ is generated that already have TWT data available. A buffer
range can be used to limit the search radius of the donor wells available to
The TWT data is generated by extrapolating the TWT depths from
the user selected well to the corresponding depth of the well that is currently
without TWT data. Data is generated ‘on the fly’ each time a donor well is
selected by the user.
The newly generated TWT data can be downloaded from the UKOGL site as a spreadsheet document. Values generated by the Two-Way Time extrapolation function are not retained by UKOGL but they can be regenerated by the user if required again at a later date.
While a great effort has been made by UKOGL to accurately generate TWT data from extrapolated well depths, use of the generated values is always at the users own discretion.
Two new seismic surveys have been released onshore and are now avaialble through UKOGL. The 3D surveys are located in Cheshire and North Yorkshire.
We hope that you can visit us at Booth Number 6 where representatives of the UKOGL Trustees along with the Lynx Administration Team would very much welcome the opportunity to meet you and provide details of our current activities, updates and the wide range of resources that UKOGL & Lynx have to offer.
We have now added a direct link from our Wells map layer allowing the user to seamlessly access the equivalent records for each individual well and borehole as held in the BGS GeoRecords Open Licence archives.
The link can be found on the Images tab when querying any location within the Wells Layer.
Whilst records for many of the Exploration wells in the BGS Archives may currently be classified as confidential, for the majority of wells within the UKOGL Additional Boreholes layer supplemental information should be freely available.
For full details of the extensive resources as held by the BGS and also guidance as how to access data, including Confidential Records, please visit the BGS GeoRecords web site.
For a small number of the older legacy wells, recently sourced original Operator records have revealed that these wells were subsequently deepened and that this was not reflected on the graphic Composite Logs as presented at the time of submission.
UKOGL records have now been updated for the following:
EAKRING 34, 39, 70, 73, 74, 75, 76, 80, FORMBY G23, KELHAM HILLS 18 and WEST DRAYTON 2.
Whilst most revisions have been minor and not resulted in a change in the formation at TD, in the cases of EAKRING 34, 39 & 80 total depth is now in the Lower Carboniferous as opposed to the Upper or Middle Carboniferous as previously stated. UKOGL Well Tops presentations have been updated accordingly.
UKOGL have implemented an expanded and improved well search capability
to the online interactive map focusing on the Well Formation Tops information that
is held for each well.
Accessible via the contents panel, ‘Wells’ and ‘Additional Selected Boreholes’ can now be searched separately using a new set of filters and search options, these include:
Well Formation & Well Formation Age
Bottom Hole Age & Bottom Hole Formation
To search both the OGA ‘Wells’ and the ‘Additional Selected Boreholes’ separate searches should be performed on each well set.
For each set of wells the selected filters can be combined together and the results are automatically displayed on the map to quickly and easily target the displayed information.
Example Search Summary: The Well Formation Tops search options are located on the content side panel of the interactive map selected via:
Wells > Surface Locations > Search Box or Wells>Additional Selected Boreholes>Search Box
- The Bottom Hole Age and Bottom Hole Formation can be filtered and searched using the ‘Drop down’ menu or by entering text in to the search box and selecting the filtered context suggestions.
- On the ‘Bottom-Hole Age or older’ selection click on the ‘tick’ box to display all wells that also have a Bottom-Hole Age ‘older’ than the selected Bottom-Hole Age.
- The Formation Age and Formation Tops can be filtered and searched using the ‘Drop down’ menu or by entering text in to the search box and selecting the filtered context suggestion.
- On the ‘Formation Age or older’ selection click on the ‘tick’ box to display all wells that also contain formations older than the selected Formation Age.
- The filtered results are displayed on the map with the option to zoom to the extent of the returned search results.
All filters can be combined to further refine each search performed upon the wells with each search result depicted by the wells displayed on the interactive map.
Select the ‘Remove layer filters’ icon to cancel all filters and re-display all available onshore wells.
New Regional Study Release
UKOGL are pleased to be able to release and make available a new regional report that utilises the seismic images that are freely available on the UKOGL website. The independent report: The Value of UKOGL Seismic Lines in major engineering projects: The HS2 High-Speed Rail Project by Robin Grayson demonstrates the potential value of the seismic data that is archived and held by the UK Onshore Geophysical Library in planning large engineering projects in the UK.
UKOGL data is available for use by all interested parties, not just educational and commercial organisations but also the general public. In this case, the seismic lines show elements of the underlying deep geological structure that can have a large influence on the stability of major construction work and it is very encouraging to see our data utilised in this manner.
The report can be accessed either via the ‘Supplemental Resources’ side panel on the UKOGL home page, followed by selecting the ‘Regional and Government Studies’ link and then the ‘Northern England’ option, or by using the ‘Catch All Reports Search’ icon on the UKOGL interactive map and clicking on the map over the Manchester area.