×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Optimum Make Up Torque for 5.5" Casing

Optimum Make Up Torque for 5.5" Casing

Optimum Make Up Torque for 5.5" Casing

(OP)
Dear All,

Please help me to calculate or show any helpful tips or reference on above subject.

Detail Specification of the Casing
> 5.5" Body OD, 15.5 ppf, K-55
> 5.8" LTC Coupling Special Clearance

Highly appreciate any input

Thanks

RE: Optimum Make Up Torque for 5.5" Casing

Ask the API or your casing supplier?

My Baker Tech Facts Book says the recommended makeup torque for 5-1/2" 15.5ppf K55 STC casing 2220 ft.lbs;   5-1/2" 15.5ppf K55 LTC casing is 2390ft.lbs. It doesn't list the makeup for speccial clearlance couplingsother than the size: special clearance 5-1/2" coupling is 5.875" diameter, normal 5-1/2" is 6.050".

You might suggest using 2220ft.lbs would be OK?

Also, what is the value for- if you simply want the casing not to fall apart, you could see what torque you need to get to the thread vanish point on the first few joints and then use that- like you do with large diameter casing with API 8 round thread.  If it's gas tight then you shouldn't be using API connections, and if you want to be able to rotate the casing, check the torque with the drill string before you POOH and say minimum makeup torque is 80% of the drill string torque (or 2220ft.lbs whichever is less)

 

RE: Optimum Make Up Torque for 5.5" Casing

Good rule of thumb, if you are expecting gas pressures over 4500psi, then use gas tight connections.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources