Hunan, China
Business Type:
Manufacturer/Factory & Trading Company
Number of Employees:
114
Year of Establishment:
2001-01-10
Management System Certification:
ISO9001:2008
Average Lead Time:
Peak season lead time: within 15 workday
Off season lead time: within 15 workday
OEM/ODM Service
Sample Available

Core Barrel, Wireline Drill, Diamond Core Drilling manufacturer / supplier in China, offering Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel, 2 1/2" TCI Tricone Rock Bit, 3 1/2" Tricone Rock Bits with Bw Rod Pin and so on.

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Supplier Homepage Products Core Barrel Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel
  • Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel
  • Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel
  • Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel
  • Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel
  • Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel

Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel

Get Latest Price
Min. Order / Reference FOB Price
1 Piece US $500-800/ Piece
Port: Changsha, China
Production Capacity: 1000
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Size: Bq Nq Hq Pq
Transport Package: Plywood Case
Specification: BQ NQ HQ PQ
Trademark: FORSUN
Origin: Changsha

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Basic Info

Model NO.: BQ NQ HQ PQ
HS Code: 82071910

Product Description

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.

Double core tube and tube has outer pipe, rinses through joint between the internal and external tube water flow to the bottom of the hole, protecting cores from rinses washouts. Double core tube has double motion and single movement two kinds. Double motion and core tube is internal and external core tube following bit and drill stem rotation, it in no serious loose or broken strata.

Single movement double core tube internal and external tube has bearing isolation, pipe outer pipe driven only pick up bit rotation, and broken rock tube does not rotate, avoid to core friction, vibration, etc., with mechanical damage, so it in serious loose fractured formations. These, can be well protected cores.

Use double deck core tube take core, bits need to use wall thickness of the alloy drill or diamond bits.
Due to the rock drill contact surface area increased and the lip use double deck core tube than ordinary core tube drilling efficiency to reduce. In the ledge, coal, in order to guarantee rock (mineral) heart take rate, rules must be use double deck core tube coring. More complex double core tube, except to finish single movement, in addition, aluminum, steel tube placed plastic or qualitative buckled half close tube, have a better protection of the core role.

2. Size
1.5m and 3.0m length core barrels are avaiable.

3. Model type
Below is a chart to evaluate core sample sizes and to locate corresponding core barrel systems


We also supply

T series Core Barrels: T2-56, T2-66, T2-76, T2-86, T2-101, T6-131

WF series Core Barrels: HWF, PWF, SWF, UWF, 412F

NMLC, HMLC Core Barrel

Double Tube & Single Tube Core Barrel: NWG, HWG

We will feel happy to give you a quotation upon receipt of your detailed requirements.

Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel
Bq Nq Hq Pq Geotechical Drilling Double Tube Core Barrel

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