Surface stack kick sheet – 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.

[tcb-script src=”https://plu.ug/n/d5equzho”][/tcb-script]

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.

Kick Control worksheet, release 1a, issued 20 Oct 08. Audit version.

Sponsored and approved by Aberdeen Drilling Schools – the home of well control training

Pre-kick input – well information

Pre-kick input – string and mud data

4.5″ 9.5 ppf4.5″ 10.5 ppf4.5″ 11.6 ppf4.5″ 13.5 ppf4.5″ 15.1 ppf5″ 11.5 ppf5″ 13 ppf5″ 15 ppf5″ 18 ppf5″ 21.4 ppf5″ 23.2 ppf5″ 24.1 ppf5.5″ 14 ppf5.5″ 15.5 ppf5.5″ 17 ppf5.5″ 20 ppf5.5″ 23 ppf5.5″ 26.8 ppf5.5″ 29.7 ppf5.5″ 32.6 ppf5.5″ 35.3 ppf5.5″ 38 ppf5.5″ 40.5 ppf5.5″ 43.1 ppf6.625″ 20 ppf6.625″ 24 ppf6.625″ 28 ppf6.625″ 32 ppf7″ 17 ppf7″ 20 ppf7″ 23 ppf7″ 26 ppf7″ 29 ppf7″ 32 ppf7″ 35 ppf7″ 38 ppf7″ 42.7 ppf7″ 46.4 ppf7″ 50.1 ppf7″ 53.6 ppf7″ 57.1 ppf7.625″ 24 ppf7.625″ 26.4 ppf7.625″ 29.7 ppf7.625″ 33.7 ppf7.625″ 39 ppf7.625″ 42.8 ppf7.625″ 45.3 ppf7.625″ 47.1 ppf7.625″ 51.2 ppf7.625″ 55.3 ppf7.75″ 46.1 ppf8.625″ 24 ppf8.625″ 28 ppf8.625″ 32 ppf8.625″ 36 ppf8.625″ 40 ppf8.625″ 49 ppf9.625″ 32 ppf9.625″ 36 ppf9.625″ 40 ppf9.625″ 43.5 ppf9.625″ 47 ppf9.625″ 53.5 ppf9.625″ 58.4 ppf9.625″ 59.4 ppf9.625″ 64.9 ppf9.625″ 70.3 ppf9.625″ 75.6 ppf10.75″ 32.75 ppf10.75″ 40.5 ppf10.75″ 45.5 ppf10.75″ 51 ppf10.75″ 55.5 ppf10.75″ 60.7 ppf10.75″ 65.7 ppf10.75″ 73.2 ppf10.75″ 79.2 ppf10.75″ 85.3 ppf11.75″ 42 ppf11.75″ 47 ppf11.75″ 54 ppf11.75″ 60 ppf11.75″ 65 ppf11.75″ 71 ppf13.375″ 48 ppf13.375″ 54.5 ppf13.375″ 61 ppf13.375″ 68 ppf13.375″ 72 ppf16″ 65 ppf16″ 75 ppf16″ 84 ppf16″ 109 ppf18.625″ 87.5 ppf20″ 94 ppf20″ 106.5 ppf20″ 133 ppf8.625″ 44 ppf

4.276

Select the casing in use

Drillpipe OD and ID

inmm

6500

Casing shoe TVD

ftm

HWDP ID

6500

350

ftm

Casing shoe MD

HWDP length

psi/ftSG or kg/lppglb/ft3ppbkPa/m

2.8

inmm

Casing shoe strength gradient

DC OD and ID

12.25

inmm

160

ftm

Hole diameter

DC length

4.3

GallonsBarrelsLitresCubic metres

350

psiPakPaMPa

Pump output per stroke

SCR strokes/min and pressure

Post-kick data

psi/ftSG or kg/lppglb/ft3ppbkPa/m

1000

Drilling fluid density

SIDPP

psiPakPaMPa

8000

1200

Well TVD

ftm

8000

lm3bblft3

Well MD

Influx volume

Click here when any values are modified to update the result.

Calculations

Bottom hole pressure after closing the BOP

New mud gradient to balance bottom hole pressure

Mud weight equivalent of the gradient

Length of drillpipe in the hole

Surface to bit volume (drillstring volume)

and the number of strokes and time for the Surface to bit (kill Phase 1) volume.

Open hole length

Calculate the annular volume between open hole and drill collars.

Calculate the annular volume between open hole and drill pipe.

Calculate the annular volume between casing and drill collars.

Calculate the annular volume between casing and drill pipe.

Calculate the bit to shoe open hole annular volume

Calculate the shoe to choke annular volume

End of Phase 2 comes after pumping heavy mud down the drillstring and up to the casing shoe. The open hole is now full of heavy mud.

Strokes and time for Phase 2;

End of Phase 3 volume. This is completed after puming the annulus volume (“bottoms up”). The influx is all out and all that remains is to displace out the light mud that was originally in the drillstring at the start of the well kill.

Strokes and time for Phase 3;

End of final phase; complete the circulation.

Strokes and time for Phase 4;

Calculate the initial and final circulating pressures

Calculate the pressure drop per stroke

Calculate the number of strokes at 10% intervals during Phase 1.

Calculate the pressure for the number of strokes without units

Results

Bottom hole pressure

Kill mud gradient

Kill mud weight

Initial circulating pressure