Wireline Coring Equipment
The wireline coring system was developed to increase production in holes where a continuous core sample is required.
This is achieved using an inner tube with a core barrel head incorporated with latches that lock into the adaptor and locking couplings at the top of the core barrel outer tube. The inner tube is lowered into the outer barrel through constant internal bore drill tubes (drill rods). It then locks in position by means of the latching mechanism but is able to rotate through the bearing section incorporated in the core barrel head. At the end of the core run a recovery tool (overshot) is lowered through the drill string on a wireline. This locates on the top of the inner tube and retracts the latches when the wireline is hoisted. The inner tube and core can then be lifted to the surface.
This technique has considerable advantages over conventional coring as the drill string does not have to be run in and out of the hole at the end of each core run. The wireline coring system has become the favoured method of coring; particularly in deeper holes, although there is still a great deal of conventional coring carried out
Dando can supply a wide range of coring tooling items in NWL, HWL and PWL sizes. Please see below for product numbers and descriptions.
Alternatively, if you are interested in Dando’s range of wireline coring rigs please visit: Mineral Exploration Drilling Rigs
Product Number | Product Description |
---|---|
503-1070 | NWL (2 3/4") Drill Rods 3m Long (500m) Heat Treated Ends |
503-1001 | NWL Core Barrel 3m Complete |
503-1012 | NWL Core Barrel Spares |
503-1050 | NWL Overshot |
503-1022 | NWL Core Lifter |
503-1023 | NWL Core Lifter Case |
503-1041 | NWL Stop Ring |
503-1044 | NWL Locking Coupling |
503-1045 | NWL Adaptor Coupling |
503-1046 | NWL Landing Ring |
503-1028 | NWL Inner Tube Stabilizer |
200-1501 | NWL (3 1/2") Size Casing 3m |
200-1502 | NWL (3 1/2") Size Casing 1.5m |
200-1504 | NWL (3 1/2") Size Casing 1m |
1100-1512 | NWL Diamond Casing Shoe |
203-1501 | NWL Casing Adaptor |
Product Number | Product Description |
---|---|
502-1070 | HWL (2 3/4") Drill Rods 3m Long Heat Treated Ends |
502-1001 | HWL Core Barrel 3m Complete |
502-1012 | HWL Core Barrel Spares |
502-1050 | HWL Overshot |
502-1022 | HWL Core Lifter |
502-1023 | HWL Core Lifter Case |
502-1041 | HWL Stop Ring |
502-1044 | HWL Locking Coupling |
502-1045 | HWL Adaptor Coupling |
502-1046 | HWL Landing Ring |
502-1092 | HWL Inner Tube Stabilizer |
200-1401 | HWL (4 1/2") Size Casing 3m |
200-1402 | HWL (4 1/2") Size Casing 1.5m |
200-1406 | HWL (4 1/2") Size Casing 1m |
1100-1403 | HWL Diamond Casing Shoe |
203-1402 | HWL Casing Adaptor |
Product Number | Product Description |
---|---|
501-1070 | PWL (4.1/2") Drill Rods 3m Long Heat Treated Ends |
501-1001 | PWL Core Barrel 3m Complete |
501-1090 | PWL Core Barrel Spares |
501-1050 | PWL Overshot |
501-1022 | PWL Core Lifter |
501-1023 | PWL Core Lifter Case |
501-1041 | PWL Stop Ring |
501-1044 | PWL Locking Coupling |
501-1045 | PWL Adaptor Coupling |
501-1046 | PWL Landing Ring |
501-1028 | PWL Inner Tube Stabilizer |
200-1320 | PWL (5.1/2") Size Casing 3m |
200-1321 | PWL (5.1/2") Size Casing 1.5m |
200-1406 | PWL (5.1/2") Size Casing 1m |
1100-1330 | PWL Diamond Casing Shoe |
203-1302 | PWL Casing Adaptor |