Temperature Correction Factor - Work
NOTICE: Our Mathcad database got attacked and infected with a virus. Unfortunately, we've had to shut it down until further notice.
You can safely browse the pages, as the Mathcad server was separate to this main website, and was only accessible here. (We used something called an iFrame, which is like a window into a different website).
UPDATE 28th of January 2020: the virus happened just over a week ago. We've temporarily cut and pasted the text parts of the Mathcad pages rather than having blank pages there.
UPDATE 3rd of February 2020: We've been unable to recover the Mathcad worksheets and offer them in a format that provided total security to users. They were published a decade ago, and our IT people say that they would need a complete re-creation with the latest code and security fixes.
APPEAL: These 44 pages were created, and offered as a free resource for over a decade. We know from our website analytics that more than 1000 users visited each month. If only half of these regular visitors donated $20, we would have enough to create an even better solution. As you know, time is money, have these Mathcad pages saved you $20 in time over the years? We expect that they have, not to mention the learning opportunities provided to new engineers entering the industry.
Please, donate at least $20 as a one-off payment, to bring back the drillers Mathcad back as an always free to use resource!
NO! I can't or won't donate to the restoration fund. I'm happy to spend a few minutes to offer a testimonial to help encourage the effort. These worksheets do have value. Offer Feedback.
Temperature Correction Factor, release 1, issued 24 January 2008. Work version.
Description
This worksheet takes temperature and steel grade as input. It uses the formulae defined in the referenced documents to calculate the Temperature Correction Factor for Steel, which accounts for the fact that yield strength of steel decreases with increased temperature. The revised Minimum Yield Stress is also given.
NOTE – this calculation is only valid for steel alloys and for temperatures not exceeding 5000 F or 2600 Celsius.
Mathcad uses metric units internally so if imperial units are entered, they are converted to metric. Intermediate results are metric. Both units will be given as outputs.
User input
100 |
FCK |
Enter the temperature at the depth of interest. Temp =
80 |
Enter the number part of the steel grade eg for L80, enter 80 (units are kpsi). Gr =
Click here when any values are modified to update the result.
Results
Entered
Temperature Correction Factor
API Minimum Yield Stress, ambient
API Minimum Yield Stress, with TCF
Worksheet references
Formulae for Temperature Correction Factor taken from the Exxon Casing Design Manual.
Version 1 of this worksheet released on 24 January 2008.
