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Boart Longyear in Hole Tools

  • Head Assembly.
  • Overshot.

Boart Longyear Overshots

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Boart Longyear Overshots
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Approx. Rs 100 / PieceGet Latest Price

Boart Longyear's overshots are an integral part of the Genuine Q(TM) Wireline System. Once the inner tube is full of core, the overshot is lowered to the bottom of the hole, and its heavy-duty lifting dogs grab a secure hold at the top of the inner tube assembly.

For maximum productivity in underground or pump-in applications, Boart Longyear offers the new Quick Pump-in(TM) overshot. The new Quick Pump-in(TM) overshot provides significantly improved pump-in rates with dual pump-in lip-seals. In addition, it incorporates the proven/reliable, patented Landing Indicator bushing as an optional bypass valve feature. When drilling flat or slightly declined, the landing indicator bushing and valve ball will provide a pressure spike upon landing and allow fluid to bypass the overshot when pulling from the hole, significantly improving retraction rates and eliminating the need to refill the hole with drilling fluid.

Other Details

  • Conversion Kits Boart Longyear has set up conversion kits to assist our customers in converting over, instead of buying a completely new system. There are also kits available to convert between surface and underground applications
  • EZY lock overshot As part of Boart Longyear's commitment to safety on the drill site, we offer the patented EZY-Lock overshot for use with the Genuine Q(TM) Wireline System. The safety and productivity features included in the design provide highly reliable core barrel retrieval for all surface exploration applications
  • The EZY Lock is available for above-ground Genuine Q(TM) Wireline Systems in sizes B to P


Features


  • Heavy duty lifting dogs and compression spring
  • Threaded connection between jar staff and overshot head
  • High strength alloy steel jar staff with increased diameter and fail safe stop
  • Locking sleeve prevents release of inner tube
  • Optional dry hole lowering kit
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Boart Longyear Head Assemblies

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Boart Longyear Head Assemblies
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Approx. Rs 100 / PieceGet Latest Price

The head assembly provides: latching and pivoting spearpoint mechanisms to allow insertion and retrieval of the inner tube assembly, a bearing assembly to allow the inner tube to remain stationary and avoid sample damage while drilling, fluid pressure operating indications and fluid control valves. All head assemblies incorporate a shut off valve assembly which provides a fluid pressure signal to the drill operator when the valve members are compressed, indicating a full or blocked inner tube.

A key component of both the Quick Descent™ and the Quick Pump-in™ Head Assemblies is the new Spearpoint head , which has patented technology, which provides increased durability and safe use.


Other details:

 

  • Quick Descent ™ Roller Latch Head Assembly : The Quick Descent ™ core barrel head assembly provides the driller with the most reliable wireline technology in the business: including the robust, vibration-resistant Link-Latch system.
  • Quick Pump-In™ Roller Latch Head Assembly : The Quick Pump-in ™ head now features all of the advances of the surface Q ™ system plus a range of innovations focused on productivity underground.
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Boart Longyear Core Barrel

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Boart Longyear Core Barrel
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Approx. Rs 100 / PieceGet Latest Price

Boart Longyear currently offers three models of the wireline core barrel system: Genuine QTM, QTKTM, and Q3TM. Genuine QTM/QTMTK wireline systems consist of the core barrel assembly and the overshot assembly. Both assemblies are integral to the wireline system. The core barrel assembly is composed of the inner-tube group and outer-tube group.

The inner-tube group is composed of:


  • Head Assembly
  • Inner Tube
  • Core Lifter Case
  • Core Lifter
  • Stop Ring

 

The outer-tube group is composed of the remainder of the core barrel components:


  • Locking Coupling
  • Adapter Coupling
  • Outer Tube

 

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