High Quality Core Barrel Overshot for Underground Drilling, DrillingTube Core Barrel, Core Barrel Assembly Suppliers in China

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Bq Nq Hq Pq DrillingTube Core Barrel

Bq Nq Hq Pq DrillingTube Core Barrel

    Min. Order: 1 Piece/Pieces
    Port: ,,

Product Description

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.


Q: Are you a manufacturer or trading company ?

A: We are a specialized manufacturer.

Q: How about the delivery terms ?

1. Payment: T/T, 30% deposit in advance and rest before delivery.

2. Min. order quantity: 1 piece.

3. Transportation: By DHL/TNT/Fedex express, air, sea, train.

Q: How about discount ?

A: Price is based on products and order quantity.

Q: Do you accept sample order?

A: Yes sure, please contact us for details.

Q: How about your after-sales service?

A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.

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XITAN Technology (JIANGSU XI TEC ENVIRONMENTAL &DRILLING EQUIPMENT COMPANY CO.LTD) is a engineering machinery manufacturing enterprise, which integrating scientific research,design,production,sales and service.Adhering to more than 60 years history of professional drilling rig manufacturing, it creates a precedent for domestic ecological environment investigation and intelligent repairing equipment. It is a national high-tech enterprise and a small&medium-sized enterprise in scientific and technological which has"Jiangsu Mineral Exploration Machinery Engineering Technology Research Center" and "Wuxi certified enterprise technology center" and was awarded as a "small and strong intellectual property enterprise" in 2021; It was rated as a provincial and municipal "professional,precise,particular and innovative giant enterprise"and a"municipal top intellectual property enterprise" in 2020. It was rated as a "Gazelle" enterprise and successfully awarded the "Jiangsu post-doctoral scientific research station" in 2021.We have established long-term and in-deapth industry-university-research cooperation with the institute of exploration technology of the Chinese Academy of Geological Sciences, Zhejiang University, Jiangnan University and other scientific research institutes; The enterprise has a total of 120 patents, including 35 valid invention patents.

Company Info

  • Representative: Mr.Ligen Zhu
  • Product/Service: Rotary Drilling Rig , Core Drilling Machine , Water Well Drilling Rig , Hydraulic Drilling Rig , Percussion Drilling Rig , Anchor Drilling Machine
  • Capital (Million US $): 20250000RMB
  • Year Established: 1980
  • Total Annual Sales Volume (Million US $): US$10 Million - US$50 Million
  • Export Percentage: 31% - 40%
  • Total Annual Purchase Volume (Million US $): US$5 Million - US$10 Million
  • No. of Production Lines: 3
  • No. of R&D Staff: 11 -20 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: no
  • Factory Size (Sq.meters): 50,000-100,000 square meters
  • Factory Location: 555 Xida Road, Meicun Town, Xinwu District, Wuxi City, Jiangsu Province,China
  • Contact Person: Ms. SUMMER
  • Tel: +86-0510-85014491
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