SS-15® BigBore™ II Subsea Wellhead System

Description

System Features:

• The SS-15 BigBore II 18-3/4" standard wellhead is a nominal 27" O.D.
• The SS-15ES BigBore II 18-3/4" wellhead has a nominal 30" O.D.
• All BigBore II 18-3/4" wellheads can safely pass 18" O.D. pipe with flush O.D. connections through an 18.510" minimum I.D.
• Rigid lockdown system preloads wellhead connection together for high fatigue life
• 18" intermediate casing string is drilled and set in a standard BOP controlled environment
• 22" adapter supplies landing shoulder and seal area for 18" and 16" supplemental casing hanger systems
• All casing hangers and seal assemblies are run, set and tested on drill pipe in a single trip
• Multiple conductor housings supply resistance to bending, are used to case off hazardous formations and accommodate complex casing programs
• Available with annulus shut-off system to inhibit surface flow of water or hydrates
• Easily accommodates casing programs with the supplemental casing hanger systems
• Lockdown sleeve can be used to preload wellhead components in wellhead to inhibit thermal growth of casing strings
• Incorporates all other features of the field-proven SS-15 Subsea Wellhead System