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4 1/2 Reverse Circulation Drill Pipe Double Wall S135

Langfang Baiwei Drill Co., Ltd.
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    Buy cheap 4 1/2 Reverse Circulation Drill Pipe Double Wall S135 from wholesalers
     
    Buy cheap 4 1/2 Reverse Circulation Drill Pipe Double Wall S135 from wholesalers
    • Buy cheap 4 1/2 Reverse Circulation Drill Pipe Double Wall S135 from wholesalers

    4 1/2 Reverse Circulation Drill Pipe Double Wall S135

    Ask Lasest Price
    Brand Name : Long way
    Price : Negotiable
    Payment Terms : T/T
    Supply Ability : 10,000 sets per month
    Delivery Time : 20-30 working days, which will be adjusted according to different products and inventory
    • Product Details
    • Company Profile

    4 1/2 Reverse Circulation Drill Pipe Double Wall S135

    4 1/2 double wall reverse circulation RC drill pipe for sale



    Product Description

    Gas-lift reverse circulation drilling technology is due to large backflow, fast backflow, high drilling efficiency, high drilling efficiency, long bit life, and good well quality. Drilling in complex formations is safe and reliable. Continuous sampling (coring) drilling, saving auxiliary time and reducing labor intensity, has been recognized in practice. It has become the main technical means for drilling water wells, geothermal wells, gas wells, coalbed methane wells, and large-diameter projects at home and abroad, and its application scope is getting wider and wider.


    Working principle
    The working principle of gas lift reverse circulation is similar to that of an air compressor, that is, compressed air is sprayed into the inner tube from the mixer through the double-wall movable drill pipe, the inner wall of the outer wall pipe and the outer pipe ring gap through the double-wall gas faucet or air box, forming Numerous small bubbles rise rapidly along the inner tube and expand at the same time, thereby generating air lift. As the compressed air continuously enters the well fluid, a low-density gas-water mixture is formed in the upper part of the mixer, and the fluid ratio in the well is large. According to the principle of the connecting device, the gas-water mixture in the inner tube flows upward under the action of the pressure difference and flows into the well. The cores or cuttings at the bottom are continuously discharged from the surface and into the sedimentation tank. The sedimented mud flows back into the hole and enters the circulating fluid space in the drill pipe through the bottom of the hole.


    Double wall drill pipe


    TypeO.D.of the outer tube (mm)I.D.of the inner tube (mm)Outer dianeter of joint (mm)Type of threadsEffective length (m)
    WB114/651146515641F6
    WB127/7612776162/16841/21F6 , 9.5
    DB127/761277618451/2FH9.5
    WB140/88139.78818451/2FH6,9.5
    WB219/130219130240Factory standard6,9.5
    WK76/327632783" Remet3
    WK102/41102411034" Remet3 , 6
    WK114/52114.3521164 1/2" Remet3 , 6
    WK114/38114.338114.34 1/2" Metzke3 , 6
    WK114/50114.350114.34 1/2" Remet3 , 6
    WP50/205020501 , 1.5
    WP73/357335731 , 1.5
    WP89/408940891 , 1.5


    Our Services:


    1. Drill pipe strictly according to API ISO9001 standard.

    2. If you found to quality problems within one month of the package returned.

    3. All strictly according to the contract and fulfill the obligations and responsibilities.

    4. 24 hours online customer service,feel free contact us.


    FAQ


    Q: Are you trading company or manufacturer ?
    A: We are factory.


    Q: How long is your delivery time?
    A: Generally it is 7-30 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.


    Q: Do you provide samples ? is it free or extra ?
    A: Yes, we could offer the sample need to pay the cost of products and freight.


    Q: What is your terms of payment ?
    A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.


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