Loadmaster Universal Rigs.
Offshore Mast
Vertically Assesmbled Telescoping
Loadmaster’s series of vertically assembled telescoping offshore masts, also known as “Bootstrap” masts are configured for the mobility required in the Gulf of Mexico market and regions of similar activity. These masts are mobilized with conventional supply vessels, and are installed with the platform service crane. The installation and erection of these masts is accomplished with a trained rig crew, and do not require specialized crews.
This mature series of mast designs have evolved to satisfy a wide variety of challenges in this market. In particular, the “Dynamic Assist” structure option allows a fixed platform mast to be used in a dynamic application such as TLP or SPAR, or in a region of seismic activity. The range of sizes and specialty application, are noted below with associated features:
400,000 lb static hook rating mast for minimum space platform workover/drilling rig
?Platform crane assembled
?Maximum component lift weight: 15,000 lbs
?Racking board capacities up to 210 stands of 4” drill pipe
?10 lines to the traveling block
?Accommodates Top Drive
? Configurable at installation for Doubles or Singles operation
?Optional Dynamic Assist Structure
1,000,000 lb static hook rating mast
? Minimum weight for platform crane assembly
?Maximum component weight: 50,000 lbs
?Racking board capacities up to 308 stands of 600,000 lbs
?12 lines to the traveling block
?Configurable at installation for Doubles or Singles operation
? Accommodates Top Drive with split block or block
?Optional Dynamic Assist Structure
1,000,000 lb static hook rating mast
?Configurable for Quadruples (Fourables) mode with a clear height of 186’ for static operation or Trebles mode with a clear height of 152’ for dynamic operation
? 1,200,000 lb Racking Capacity with an OAC (Offline Activities Crane) installed on the Racking Board to work with an offline mouse hole
?Optional heavy-lift packaging of pre-assembled bottom section with top section and crown block, horizontally installed, then raised to vertical by multi-stage hydraulic cylinders
?Intermediate sections are placed horizontally by barge crane then vertically scoped by hydraulic winches
? All inter-section connections and telescoping front strut locking pin is driven by double action hydraulic cylinders
?The design has been approved by ABS.