> For the complete documentation index, see [llms.txt](https://docs.innova-drilling.com/introduction/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.innova-drilling.com/introduction/technical-notes/well-seeker-pro-technical-notes/ws-3d-chart-c2c-distance-critical-update.md). # WS 3D Chart C2C Distance Critical Update ### Description In Well Seeker Pro **Version 2.2.1.11**, the **3D view plot** was updated to accommodate new chart features. After this update, in specific cases where there was an NAD27 to NAD83, or NAD83 to NAD27 conversion between the reference well and any of the offset wells, the **Up/Dn**, **Left/Right** and **Dist** values displayed in the 3D plot will have been incorrect. All other aspects of Well Seeker Pro, such as the AC report and RTAC dialogs reported this number correctly. ![](/files/zDPIDsmMsVBY6DavF50U) ### Solution A bug fix has been issued in Well Seeker Pro **Version 2.2.1.13**. All users currently using Well Seeker Pro versions 2.2.1.11 and 2.2.1.12 are strongly advised to update to version 2.2.1.13 as soon as possible. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.innova-drilling.com/introduction/technical-notes/well-seeker-pro-technical-notes/ws-3d-chart-c2c-distance-critical-update.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.