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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.
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Mud retort analysis, release 3a, issued 1 July 2008. WORK version.
The current release of this worksheet exists in three different versions. They are identical apart from the way they are formatted. The Work version displays the intermediate calculations. The Audit version shows all intermediate calculations. The PDA version removes all text and formats the input and output fields for optimum viewing on a mobile, small-screen device.
Enter empty retort chamber weight. Frt1 =
Enter full retort chamber weight. Frt2 =
Enter final retort chamber weight after retorting. Frt3 =
Volume of mud sample in chamber. Vrt =
Volume of distillate after the test. Vdl =
Volume of water after the test. Vw =
Click here when any values are modified to update the result.
Pressure gradient of the mud under test.
Mud weight of the mud under test
Mass percentage of solids in the mud.
Volume percentage of solids in the mud.
Volume percentage of oil in the mud.
Oil – water ratio.
Original formulae from MI Drilling Fluids Handbook, ref MI-0020 6/97.
Version 1 of this worksheet was issued on 27 June 2008.