Maximum formation pressure that can be controlled when we shut the well in

You know about kick tolerance factor from previous section and you can use it to determine the maximum formation pressure which can be controlled when the well is shut in.

This equation below demonstrates you how to calculate it.

Maximum formation pressure = (kick tolerance factor + current mud weight) x 0.052 x TVD of the well

These

Maximum formation pressure in psi

kick tolerance factor in ppg

current mud weight in ppg

TVD of the well in ft

It tells us that if you have bottom hole pressure more than this value, you have a chance to break formation.

Use the following information to determine the maximum formation pressure when shut in

kick tolerance factor = 1.8 ppg

current mud weight = 9.8 ppg

Depth of the well = 10,100’MD/9,500’TVD

Maximum formation pressure = (1.8 + 9.8) x 0.052 x 9500

Maximum formation pressure the can be controlled when shut the well in = 5730 psi.

Please find the calculation sheet >>> Maximum formation pressure that can be controlled when we shut the well in

Ref book: Drilling Formula Book Formulas and Calculations for Drilling, Production and Workover, Second Edition

Related Post

Mobile Formation Causes Stuck Pipe Mobile formation is caused by overburdened pressure that squeezes shale and/or salt into a wellbore. The squeezed formations reduce wellbore diameter;...
Well Control Kill Sheet from Shell I've got the useful SHELL well control kill sheet. It is really handy for drilling people. Please find the download at the end of the blog post. ...
Surge Pressure, Swab Pressure and Trip Margin You may have heard about Surge Pressure, Swab Pressure and Trip margin in the drilling business. Today, I would like to share my knowledge about these...
Shut-In Procedure while Tripping Tripping out of the hole is a critical operation, which drilling team must keep close eye on well control situation that can occur anytime. Wellbore m...
Share the joy
  • 5
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
    5
    Shares
Tagged , . Bookmark the permalink.

About DrillingFormulas.Com

Working in the oil field and loving to share knowledge.

One Response to Maximum formation pressure that can be controlled when we shut the well in

  1. George B. Heckler says:

    You need to then calculate the kick tolerance factor at the shoe and then use the lesser of the two.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.