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Hydraulic Decoking Systems Drill Stem for coke drum cutting in delayed coking units
Introduction Features Literature

Drill Stem Hydraulic Decoking Systems designed for efficient coke removal in petroleum processing applications.Hydraulic Decoking Systems Drill Stem

Brand

Description
Flowserve

Flowserve Drill Stem for Delayed Coker Units

Flowserve drill stems are designed for hydraulic decoking systems in delayed coker units, transmitting high torque from the rotary joint to the cutting tool while delivering water for effective coke cutting. Built for extreme operating conditions, Flowserve threaded drill stems offer exceptional durability and reliability in refinery decoking applications.

Compared to conventional welded drill stem designs, Flowserve drill stems provide a side load strength up to four times higher, reducing the risk of failure during coke cutting operations and extending service life in demanding DCU environments.

Flowserve Drill Stem Hydraulic Decoking Systems  in Mechanical Decoking Applications

Flowserve threaded drill stems are extremely durable for decoking service with a side load strength four times greater than comparable welded drill stem designs.

  • Applications:
    • Petroleum production and refining
    • Delayed coker units (DCU)
    • Hydraulic coke cutting systems

Drill Stem Hydraulic Decoking Systems Features and Benefits

  • Fabricated from ASTM A-519 Grade 4140 steel tubing in 6 meter (20 foot) sections
  • Hot process expansion maintains uniform wall thickness through the female threaded end and reduces stress at thread engagement
  • API 5CT 6-5/8 inch Extreme Line threads for secure and reliable connections
  • Heat treated to achieve maximum strength and durability
  • Swaged female ends to maintain wall thickness throughout the connection area

Specifications

  • 7-inch OD x 3/4–inch wall thickness
  • Heat treated to Rc 29-37
  • Multiple end attachment options for both rotary joint and cutting tool
    • Compact flange
    • 3000 lb and 5000 lb unibolt couplings with integral threads
    • 1500 lb RTJ, 2500 lb RTJ and 2500 lb flange connections

Decoking System Equipment Innovation Poster

Hydraulic Decoking System Rotary Joint

Hydraulic Decoking System Equipment Bulletin

For more information on Flowserve drill stems for hydraulic decoking systems, please contact us today.