Offshore Operators are now specifying Integral Side Entry Subs manufactured from one piece of steel for critical wells.

Sub-drill Flanged Side Entry Sub is the answer:

• The flanged side entry connection can be replaced easily if damaged

• Avoids the welding and stress relief problems with 4145 H Mod steel of fabricated subs

• Reduced initial purchase cost compared to integral designs

• Compact flange design

• Large ID versions available

• Tensile loading charts available for all sizes

• Finite Analysis carried out to ensure reliability and good service life

• Double Side Entry Sub version available (also known as a Double Dutch Sub)

 

Sub-Drill / DNV and ABS design verification