The T2 series core barrels are suitable for coring in all formation types. The barrel is designed to be used with core bits with a relatively thin kerf to maximize the rate of penetration.
The inner and outer tubes are manufactured to our own specification from cold drawn tube of a very high tensile strength and straightness. The head is manufactured from heat treated alloy steel to ensure a long life.
T2 barrels can also be used with plastic "Coreliner" tubes with an undersize bit and corelifter, to obtain an instantly "packaged" core.
Size | 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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