© Copyright 2024 Drillers.com all rights reserved. Terms & Conditions Privacy & Cookie Policy Web Design
Increase Mudweight - Audit
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!
YES! I've gotten value from the drillers Mathcad in the past, and a $20 is a very affordable way of saying thanks. I also want to preserve this tool for future engineers.
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.
Increase mudweight, release 2, issued 2 July 2008. AUDIT version.
The current release of this worksheet exists in 3 different versions. They are identical apart from the way they are formatted. The Work version hides intermediate calculations and allows the user to see the results just below the inputs. This is useful for quick “what-if” games, changing various inputs to see what works best. The Audit version displays 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.
Description
This worksheet takes inputs of current and desired mudweight, type of weighting material used and the volume to treat. It calculates the weighting material requirements and the resulting mud volume increase.
User input
1 |
psi/ftSG or kg/lppgkPa/mlb/ft3lb/bbl |
Initial mud SG. Jmudsg1 =
1.3 |
psi/ftSG or kg/lppgkPa/mlb/ft3lb/bbl |
Desired mud SG. Jmudsg2 =
Hematite, SG 5.0Baryte, SG 4.2CaCo3, SG 2.5Galena, SG 7.5Enter manually |
0 |
Select a weighting material. Jwmsg =
or enter SG
after selecting “manual” from the drop down list.
100 |
lm3bblft3 |
Volume of mud to weight up. Vmudact =
Click here when any values are modified to update the result.
Input values
Initial and final mud SG.
SG of weighting material.
Volume to weight up.
Calculations
Calculate the mass of additive required per m3 of mud.
Calculate total amount of additive required
Calculate the new volume of mud
Results
Weighting material per unit volume
Total weighting material
New mud volume after treatment
Worksheet references
Institut Francais du Petrole. Drilling Data Handbook, 6th Edition.
MI. Drilling Fluids Handbook MI-0020 6/97.
Release 1 of this worksheet issued on 27 March 2008 by Steve Devereux.
Release 2 uses the DDC standard variable names and corrects the units used.
