Wireline double tube bits are the most common design of bits used in exploration today.
Product Description
Wireline double tube bits are the most common design of bits used in exploration today. This drilling system allows the core to be retrieved with a wireline without having to pull rods. With extensive experience of what is really required in the field, and unique expertise in metallurgy, we have brought an international team of drillers, engineers and metallurgists together to produce our best bit yet. The operating range of each diamond bit has been substantially increased providing exceptional productivity with oustanding bit life.
CROWN PROFILES | |
Extended channel flushing *Standard profile-general purpose design *Suitable for mixed formations containing broken and competent zones *Suitable for a broad range of formations | |
Jet *High performance “free cutting”bit *High productivity *Suitable for hard/competent formations | |
Face discharge *Designed to minimize flushing of core sample *Suitable for broken/granular formations | |
Wheel gear *Speed performance *High productivity *Suitable for hard/competent formations | |
Ball *Suitable for mixed formations containing broken and competent zones *Suitable for a broad range of formations |
CROWN HEIGHT | |
Short depth holes | 7mm |
Short to medium depth holes | 10mm |
Deep holes | 14mm |
FEATURES&BENEFITS |
* Simplified bit selection |
* Increased productivity |
* Reduced inventory |
* High performance |
*Streamline application based product offering |
STANDARD SPECIFICATION | |||||||
ITEM | DIAMOND BIT | REAMING SHELL | |||||
"Q" Series Wireline | Size | Bit-set OD | Bit-set ID | ||||
mm | inch | mm | inch | mm | inch | ||
AQ | 47.60 | 1.88 | 26.97 | 1.06 | 48.00 | 1.89 | |
BQ | 59.50 | 2.35 | 36.40 | 1.43 | 59.90 | 2.36 | |
NQ | 75.30 | 2.97 | 47.60 | 1.88 | 75.70 | 2.98 | |
HQ | 95.58 | 3.77 | 63.50 | 2.50 | 96.00 | 3.78 | |
PQ | 122.00 | 4.80 | 84.96 | 3.35 | 122.60 | 4.83 |
APPLICATION | |
Application 1 | Soft to medium hard rock with abrasive and fractured to competent formations Matrix series 1-4 |
Application 2 | Medium hard to hard rock with slightly abrasive and slightly broken to competent formations Matrix series 5-8 |
Application 3 | Hard to very hard rock with competent formations Matrix series 9-10 |
MATRIX SERIES | ||
Rock Group | Formation Description | Rock Type |
1-4 | Soft to medium hard Very abrasive to slightly abrasive Very fractured to slightly broken | Unmetamorphosed or weakly metamorphosed shales, Sandstone and limestone |
5 | Medium hard Abrasive Moderately fractured to slightly broken | Limestone and dolomite. Weathered granite and gneiss. Serpentinite and metaperidotite. |
6 | Medium hard Moderately abrasive Moderately fractured to slightly broken | Unmetamorphosed or weakly metamorphosed diorite, Gabbro, peridotite and gneiss. Basalt, andesite. |
7 | Medium hard - hard Moderately abrasive Slightly fractured to competent | Metabasalt, amphibolite. Metamorphosed diorite and gabbro. Diabase. |
8 | Hard Slightly abrasive Competent | Quartz rich skarn. Granite and pegmatite |
9 | Very hard Slightly abrasive Very competent | Metamorphosed granitic rock and quartz rich gneiss. |
10 | Extremely hard Non-abrasive, fine grained Very competent | Chert and jasperite. Quartzite. Highly metamorphosed volcanic. |