Welcome to drill-byte! This is a web site dedicated to all kinds of stuff related to the drilling design and analysis.
For the moment you can download, for free, an excel spreadsheet for directional drilling design, one for Torque & Drag analysis, one for wellhead pressure calculation for well full of gas, a kick tolerance calculator, and one for tension capacity of the API connections and tubes under applied torque.
In the future you'll find software for the stress calculation for tubing landed in packers, for casing centralization and design, balanced cement plugs, risk analysis, for drilling operations benchmarking.
I appreciate if you would send me your comments regarding the programs, especially about the degree of matching the actual data collected in the field, along with the permission to publish them on my website.

Last updated: 27 August 2015
Released new Survey 64 bits compatible Office 2013. Encloses User Manual
Released new Torque & Drag 64 bits (beta version), compatible Office 2013
Fixed issues in Torque & Drag and in SURVEY