High Strength 79.4mm Mining Non Mag Drill Collars

Non Magnetic Drill Collars Good Low Permeability And High Strength

Product parameters

Introduction

The non-magnetic drill collar is made of low carbon high chromium manganese alloy steel. After strict chemical composition refinement, mechanical properties are obtained by forging. When the magnetic field intensity is 1 × 105 / 4 area / m, the relative permeability bias of the non-magnetic drill collar is less than or equal to 1.010. The magnetic induction gradient of non-magnetic drill collar at any interval of 100 mm along the inner hole is ≤ 0.05

Non magnetic drill collars have unusual design requirements, which result in unique corrosion resistance problems. The drill collar is the bottom part of the drill string. The weight of the drill collar produces the force on the drill bit, which makes the drill bit drill out. However, the rigidity of the drill collar makes the force transfer not buckle. Traditional drill collars are made of alloy steel and, like the rest of the drill string, their corrosion usually does not cause any problems, except for their threaded connections. A typical drill collar is 30 feet long and 4 to 9 inches in diameter.

Advantages

Because all the magnetic measuring instruments can sense the borehole geomagnetic field when measuring the borehole direction, the measuring instruments must be in a non-magnetic environment. However, the magnetic data obtained by drilling tool with magnetic field are often unable to be measured correctly. The non-magnetic environment can be realized by using non-magnetic drill collar, which has the characteristics of drill collar in the drilling process.

Features

It has good low permeability and high strength. Excellent mechanical properties, with excellent intergranular corrosion resistance, cracking resistance and wear resistance.

Used in

Pipeline transportation, boiler tubes, hydraulic/automotive tubes, oil/gas drilling, food/beverage/dairy products, machinery industry, chemical industry, mining, construction and decoration, special purpose.

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FAQ:

1. How to order the products?

A: Please send the inquiry with detail item description or with Model number.

2. How about the common packing?

A: If there is no special packing demand, we will take it as our normal packing. First in small carton, and then put in the bigger carton together to make sure goods completed.

3. Can I expect a quality products?

A: Yes. mature production technology ensuring the quality satisfy international request.

4. How to check the product are the exact one you want?

A: If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for a better understanding.

5. How to control quality?

A: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.

6. Fast delivery time:

A: Usually it takes 25 days for production.only 3 or 5 days if we have stock of your request size.

7. Competitive price:

A: Our factory can supply you the lowest price due to direct sale to customers without distributor!