API 7-1 Slick Drill Collar
API 7-1 Slick Drill Collar Manufacturer | Longway
Type A slick drill collars have a smooth cylindrical outer surface. They are the most common type, providing maximum weight on bit in vertical wells. Manufactured from AISI 4145H chromium-molybdenum alloy steel to API 7-1 standards. Available in outer diameters from 3-1/8″ to 11″. Full-length heat treatment ensures uniform mechanical properties.
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Product Description
AISI 4145H Slick Drill Collar for Stable Weight on Bit
Slick drill collars, also known as integral or plain drill collars, feature a smooth cylindrical outer surface. They are the standard type of drill collar used in most drilling operations. The smooth surface provides maximum contact with the wellbore for effective weight transfer.
Longway manufactures AISI 4145H alloy steel with strict chemical composition control. Available with various thread connections to match BHA requirements. The smooth cylindrical profile retains the full collar section, providing concentrated weight on bit and high BHA stiffness. Available in 3-1/8″ to 11″ OD and manufactured to API Spec 7-1.
