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Hydraulic Under Reamer

  • Origin: China
  • Supply Type: oem service
  • Processing Time: 15 days
  • Min Order: 1

Supplier Info.

  • Employees Total 11-50
  • Annual Revenue US$50 Million - US$100 Million
It is a kind of high-efficient hydraulic underreamer special designed for enlarging the hole in the deep well. With the pilot shoe, it can be used for enlarging the hole after drilling. Also, with the drill bit, it can be used for enlarging the hole while drilling. Up to now, it has successfully completed reaming tasks in over 500 deep wells (the maximum reaming depth is 8500m till now).Features: 1. Applied hydraulic pressure acts on the internal piston and moves blades open to enlarge the hole. 2. Applied blades with special triangle structure to enhance the reaming efficiency. 3. Gauge teeth on every blade to increase the service life of blades and benefit to ream the regular hole.Applications: 1. Realize the reduced clearance casing programs (RCCPS) to reduce the drilling cost. 2. Solve the complex problems caused by creepage of salt-gypsum layer via reaming out the salt-gypsum section. 3. Increase the thickness of the cement mantle between the casing and the hole in the small hole to improve the cement job quality. Models and Specifications Model OD of body; mm No. of blades Top connection Bottom connection Flow rate; l/s Weight on bit; KN Max. OD when Blades open; mm YK311-365 Φ290 3 6-5/8”REG 6-5/8”REG 30-40 5-40 Φ365 YK241-290 Φ220 3 NC50 6-5/8”REG 20-35 5-40 Φ290 YK216-280 Φ210 3 NC50 4-1/2”REG 20-28 5-40 Φ280 YK165-195 Φ165 3 NC38 NC38 12-15 5-30 Φ190 YK152-178 Φ142 4 NC38 NC38 12-15 5-30 Φ178 YK114-152 Φ114 4 NC31 NC31 8-11 5-30 Φ152
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