Wireline core barrels are used when coring to greater depths, mainly because they eliminate the need to couple and uncouple the rod string each time the core is retrieved. An overshot device is dropped on a cable and directly couples onto the inner tube assembly, allowing fast retrieval of the core after each core run.

The double tube wireline core barrel is converted to triple tube by incorporating a split steel tube inside the inner tube. In addition, a  piston and pump-out adaptor is provided for pumping out the split steel tube when it is full of rock core.  The stop ring, core lifter case and core lifter also differ from the standard double tube core barrel, being slightly smaller in diameter in order to accept and retain the slightly smaller core.

Available in DCDMA sizes B, N, H. and P.

Advantages:
1. Faster coring at greater depths

2. Good stability due to constant diameter of the drill string

3. Good core recovery even in highly broken formations.

4. Our head assembly features long life span, good compatibility with parts like inner tube and outer tube from other vendors, and availability in all spare parts.
 
5. The locking coupling & adaptor coupling are Inlay alloy & with chrome plated, which will improve the longer working life of the core barrels.
 
6. All With ISO certificate & quality control.





Size:
Wireline series: AQ, BQ, NQ, HQ, PQ, PQ3, HQ3, NQ3, BQ3, NQ2, WL-66, WL-76, NQU, HQU, PQU

T2 series: T2 46, T2 56, T2 66, T2 76, T2 86, T2 101

TT series: TT 46, TT 56

T6 series: T6 76, T6 86, T6 101, T6 116, T6 131, T6 146

T6S series: T6S 76, T6S 86, T6S 116, T6S 131, T6S 146

B series: B46, B56, B66, B76, B86, B101, B116, B131, B146

MLC series: BMLC, NMLC, HMLC

LTK series: LTK48, LTK60

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, HWM

Other sizes: AX, BX, NX, HX, TBW, NQTT, HQTT, TNW, 412F, BTW, TBW, Mazier M101

Chinese standard: 56mm, 59mm, 75mm, 91mm, 110mm, 131mm, 150mm, 170mm, 219mm, 275mm

Russian standard: 59, 76, 93, 112, 132, 152 mm

1.5m and 3.0m length core barrels are available, and also can provide the shorter core barrels which used to open the holes.