T2 Series Double Tube Core Barrels Assembly
Core Barrel Size: |
Wireline series: AQ, BQ, NQ, HQ, PQ, PQ3, HQ3, NQ3, BQ3, NQ2, WL-56, WL-66, WL-76 |
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: 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, M101 |
Wireline drilling is the special method of removing the core. When the driller wants to remove core from a conventional core drill, the entire core barrel has to be removed from the hole. This is time-consuming, as each rod has to be removed one at a time. With wireline drilling, a barrel of core can be removed from the bottom of the hole without removing the rod string. When the driller wants to remove the core, an overshot is lowered on the end of a wireline. The overshot attaches to the back of the core barrel inner tube and the wireline is pulled back and the inner tube disengages itself from the barrel.
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