Casing Tubes

Casing Tubes

Application Range: It is suitable for drilling water wells, geothermal wells, short miscopies, medium mini-type grouting hole of building, dam and harbor project.
Design Principles: Make the casing follow easy and the equipment and operation simple.
Outstanding Advantages: Simple structure, easy operation, reliable quality, retrievable drilling tools, and long service life.

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Specifications
Casing Tubes
  • C: thread of the casing tube
  • L: length of the casing tube
  • L1: length of the tool joint
  • D: O.D of the casing tube
  • H: Thickness of the casing tube
Casing Tube with Tool Joint
Model(D) Thickness(h) Thread(C) Direction of rotation Length(L) Weight Product Code
108 7 Square thread Left 1500 27.1 M108/7-15-S
114 6.5 Square thread Left 1500 31 M114/6.5-15-S
127 9.5 Circular-arc Thread Left 1500 43.7 M127/9.5-15-C
127 6.5 Circular-arc Thread Left 1500 35 M127/6.5-15-C
146 10 Circular-arc Thread Left 1500 53.7 M146/10-15-C
168 10 Circular-arc Thread Left 1500 62.4 M168/10-15-C
178 9 Circular-arc Thread Left 1500 61.8 M178/9-15-C
194 10 Circular-arc Thread Left 1500 73 M194/10-15-C
219 10 Circular-arc Thread Left 1500 85.7 M219/10-15-C
273 10 Circular-arc Thread Left 1500 107.7 M273/10-15-C
325 12 Circular-arc Thread Left 1500 154.7 M325/12-15-C

Casing Tubes
  • A: Discharge Head
  • B: Drill Rod
  • C: Guide Sleeve
  • D: DTH Hammer
  • E: Casing Tube
  • F: Guide Device
  • G: Casing Shoe
  • H: Reamer
  • I: Pilot Bit
Operation Procedure
Casing Tubes
1. When drilling starts, the reamer opens and enlarges the hole to drive the casing shoe and casing tube down.
Casing Tubes
2. When the drilling in over-burden formation is finished, reverse the rotation to close the reamer, then the assembly can be pulled up through the casing tube.
Casing Tubes
3. The casing tube can be left in the hole, or can be pulled out by means of grout sealing material.
Casing Tubes
4. Use the normal drilling tools to drill and achieve to the desired depth.

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