Online Calculators

Casing

Drilling

Trapped Hot Water Pressure Calculator

Trapped water + high temperature may (depending on the temperature) = collapsed casing.

This simple calculator will quickly tell if trapped water is of concern. If yes, our Sidewinder™ Centralizers will help remove part of the risk in respect that they are free of voids while also providing positive stand-off, thereby helping to reduce the risk of channeling.

Click image to download the spreadsheet.

NB:  These spreadsheets have been optimised for MS Excel 2007+, there may be some conditional formatting issues with 2003 but these will not alter the result.

If a password is required please enter "TDTECH2013"

Drill Pipe Von Mises Stress Calculator

 

Calculate the Von Mises Stress to make sure you are not exceeding the SWL of your drill string.

Click image to download the spreadsheet.

NB:  These spreadsheets have been optimised for MS Excel 2007+, there may be some conditional formatting issues with 2003 but these will not alter the result.

If a password is required please enter "TDTECH2013"

Drill Pipe Natural Frequency Calculator

Drilling-related critical speed calculators typically only solve the Drill Collar and HWDP natural frequencies. This calculator lets you to predict the impact different unsupported lengths and tension has on the first natural frequency of any tubular be it Drill Collar, HWDP or DP. In particular, one can determine the first natural frequency of a BHA where inappropriate stabilizer spacing may result in unwanted and avoidable drill string excitation.

Click image to download the spreadsheet.

NB:  These spreadsheets have been optimised for MS Excel 2007+, there may be some conditional formatting issues with 2003 but these will not alter the result.

If a password is required please enter "TDTECH2013"

Drill Pipe Cycles to failure, fatigue Calculator

S/N curves for S135 drill pipe and mild steel. This simple calculator lets you calculate the stress reversals to failure.


Spreadsheet coming soon

Centralizer Pressure Drop Calculator 

 

Cementing ECD a concern? This calculator will give you an approximation of the pressure drop across our Sidewinder™ Centralizers. It will be much greater of course, for most other centralizers. Don’t forget that due to viscous drag, rotation increases ECD which this tool does NOT calculate.

 

Spreadsheet coming soon