Reaming shell Diamond core bit For Geological Exploration

Reaming shell is set with natural or synthetic diamond, and it is used to couple the drill bit with the core barrel. Its main function is to ream the hole to the correct constant specific diameter which ensures adequate clearance for the core barrel and sufficient clearance for the new bit which replaces an old one. It also acts as a stabilizer for drill bit.

Diamond Reaming Shells are very important reamer tools to be used together with bits in core drilling. Its main functions are maintaining the borehole gage, improving drill rods stability and protecting lower part of drill rod from excessive wear.

Helical type reaming shells provides good passages for water flowing, the matrix is wear proof and its service life is long.

Reaming Shells

The reaming shell is an integral part of a diamond drilling system and acts as a coupling between the core bit and the outer barrel. It reams the hole to the proper size, and stabilizes the bottom of the drill string.

ROSCHEN reaming shells are made with high-quality, synthetic and natural diamonds, embedded in a highly resistant matrix. The friction-resistant tungsten carbide inserts found on the leading edges of the ring provide additional protection and increased lifespan.

Special reaming shells are also available in longer lengths for improved protection against drill hole deviation. Available in both 10 and 18 inches, these products have a greater number of contact points than standard reaming shells and are specially designed to achieve optimal straightness. They represent the perfect balance between performance and value.

Special – 6 inch

6 inch (15 cm) reaming shell features one diamond ring, which is standard and effective in the majority of competent bore holes. It is used for every kind of rock hardness or ground condition and is the minimum reamer requirement to provide minimum stabilization.

One ring completely covered with diamonds

Special – 10 inch

10-inch reaming shells should be considered when bore hole deviation becomes an issue. With two rings, they provide a greater number of contact points than standard reaming shells. A 10-inch is a good choice for underground drilling where adequate space can be a challenge and an 18 inch reaming shell may be just a bit too much.

2 diamond rings completely covered in diamonds to provide improved protection against bore hole deviation.

Special – 18 inch

18-inch reaming shells feature 4 rings provide additional core barrel stabilization that will help control and reduce deviation. They feature diamond rings that cut into the rock to widen and efficiently stabilize the drill string, as well as two additional rings to reduce friction and deviation.

2 diamond rings in front with a higher concentration of diamonds to maintain the precise diameter of the bore hole.

2 other rings with a higher concentration of carbide wear pads to help stabilize the rod string.

Standard

ROSCHEN Standard reaming shells provide optimal performance in low torque requirements with less risk of premature wear. Made with high-quality, synthetic diamonds, and a durable matrix. Friction-resistant, the well-designed matrix provides extra protection and maximizes lifespan.

Ideal for low torque drill rigs often used in underground drilling

Maximum active surface helps limit deviation

Size Available:

"Q" Series:      AQ, BQ, NQ, HQ, PQ    (Front end  & Back end Type)

T Series:         T36, T46, T56, T66, T76, T86

WF Series:      HWF, PWF, SWF, UWF, ZWF

WT Series:      RWT, EWT, AWT, BWT, NWT, HWT  (Single Tube/Double Tube)

WG Series:     EWG, AWG, BWG, NWG, HWG   (Single Tube/Double Tube)

WM Series:     EWM, AWM, BWM, NWM

T2/T6 Series:  T256, T266, T276, T286, T2101/T676, T686, T6101, T6116,

                       T6131, T6146, T6H

Others:           NMLC, HMLC, LTK48, LTK60, TBW, TNW, ATW, BTW, NTW, HTW, AQTK

                       NXD3, NXC, T6H, SK6L146, TT46, TB56, TS116, CHD101, EXT

Wireline Diamond Bit and Reaming Shell

Selection Table:

Remarks: Apart from above commonly used products, various nonstandard and special products are all availableon customer's request.