Non Magnetic Drill Collar

A. Slick Drill Collar

Note: Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. The Drill collar are manufactured strictly from API Spec7-1 and SY5411 standard.

B. Spiral Drill Collar

Note: Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from diffirential pressure. The drill collars are manufactired strictly according to API Spec7-1 and Standard SY5144

C. Spiral Drill Collar With Elevator Groove And Slip Groove

Note: Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar can be used as lifting sub and safety slip when trip out. The technical parameters for elevator groove and slip groove is as per API SPEC7-1. Hardbanding is optional at customersâ?? requests.

D. Non-magnetic Drill Collar

The as cold rooled finish on both ID and OD surface with unique technical process strengthen the structure and ensures the tools with optimal resistance to stress,corrosion,cracking and the mechanical performance is greatly enganced.

The as cold rolled finish on both ID and OD surface with unique technical process strengthen the structure and ensures the tools with optimal resistance to stress, corrosion, cracking and the mechanical performance is greatly enhanced

as required

It is made of high quality low-carbon-alloy steel. The raw material undergo a rigorous analysis of the chemical composition by forging, through the testing of mechanical properties of hardness, toughness , impact value and intergranular corrosion cracking performance in order to reach the requirement of standards, at the same time owning a good low permeability and mechanical processing performance .
Magnetic permeability(mps=1íß105/4íta/m)
Average¦u>r1.010
Magnetic field gradient¦í˜bín0.05ª8t


It need to be discussed

Drilling Tool
Luhai non-magnetic drill collars are made from non-magnetic materials with low-magnetic permeability. API monogram, serial number, OD,ID, type and size of connections are stamped on recessed mill flats.
Magnetic Properties of Non-magnetic Drill Collar
When MPS=1 105/4 A/m
Relative magnetic permeability 1.1010
Magnetic Field Gradient B0.05 T

Non magnetic drill collar

Made of AISI4145H alloy steel, drill collar mainly used between the dill pipe and drill head and connected by conversion connector so that they can provide the pressure and weighting to dill head ,in order to make the dill head to keep right trace .
If order of inquiry please offer: Non magnetic drill collar
·outer diameter of dill collar
·handling features
·length of drill collar
·stress relief features
·drill collar bore
·connection type

With a sole aim in delivering quality products, we are the prominent exporter of non-magnetic drill collar in beijing, beijing, china. Luhai non-magnetic drill collars are made from non-magnetic materials with low-magnetic permeability. Api monogram, serial number, od, id, type and size of connections are stamped on recessed mill flats.

Detailed Product Description
drill collar
1)O.D: 2-3/8"-20"
2.Grade:J55 K55 N80 P110 ect
3.Thread :NU EU STC LTC BTC
4.Standard: API 5CT...
drill collar
Materials of the Non-magnetic drill collars are from chrome manganese, low carbon obtained by combining a proprietary chemical analysis and a rotary hammer process. The material is resistant to stress corrosion cracking, with high machine ability and no tendency to galling.
Magnetic permeability (when MPS=1105/4Nm) relative max �¼r:1.010.
Magnetic field gradient (hot spots) max: B 0.05micro tesla/100mm.
Place of Origin Beijing, China (Mainland)
Brand Name MTWK
Model Number various
Type Drill Collar
Machine Type Drilling Tool
Certification API
Material Chromium
Processing Type Forging
Use Well Drilling
Packaging Details standard export packing or according to seaworthy packing
Delivery Time 30 days
Supply Ability 100 Piece/Pieces per Month
Details:
Category Drilling Tool
Certifications
FOB Price
Min Order 1 Piece/Pieces as your order
Lead Time
Port tianjin
Terms L/C,T/T

Orchid Energy could supply slick type drill collar, spiral drill collar and Non-magnetic drill collar (NMDC).

Orchid Energy can provide three types of Non Magnetic Drill Collar: Non Magnetic Slick Drill Collar, Non Magnetic Spiral Drill Collar, Non Magnetic Flex Drill Collar, Pony Collar.(P530,P550 material etc)

Non Magnetic Drill Collar (NMDC) are made from low-carbon stainless steel as API specification and implementation of SY/T5144 standard, which can be cold thread rolling, machine special double shoulder thread and do as other specifications request. Non Magnetic Drill Collar are as a housing for MWD tools and also could provide weight for drill string.

Test and Inspection carried out on each bar: Chemical Composition, Tensile Test, Impact Test, Hardness Test, Metallographic Test, Corrosion Test, Ultrasonic Test over the whole length of the bar, Relative magnetic permeability Test, Hot spot Test, Dimensional Inspection.

Slick/Spiral Drill collar is produced by AISI 4145H modified quenched and tempered steel as API specification and implementation of SY / T5144 standard, which can be cold thread rolling, copper or phosphate processing, machine special double shoulder thread and other specifications.

Slick/Spiral Drill collarFeatures & Benefits:
Pressed steel thread protectors are supplied for drill collar;
Stress relief groove & bore back Box applied if needed;
Hardbanding material ARNCO 100XT,ARNCO 300XT,TCS8000 applied if needed;
Slip and elevator recess are machined in accordance with API7-1;

The drill collar is used between the drill pipe and the bit in the drill stem. It is used to put weight on the bit so that the bit can drill.
Materials:
Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the "as rolled" surface finish condition. Alternative surface finishes are available.
Trepanning and Heat Treatment:
Drill collars are trepanned and drifted to API Spec 7-1. Full-length heat-treatment processes ensure that mechanical properties meet or exceed API Spec 7-1 requirements. A hardness range of 285-341, Brinell hardness and Charpy "V" notch minimum impact strength of 40 ft-lb at 70 F are guaranteed one inch below the surface.
Traceability:
Drill collar material and process traceability are maintained from receipt of the mill's certified raw material to completion of manufacturing. Serial numbers are die stamped on bar bodies.
Rigid Inspection Procedures:
We inspect all our drill collars to ensure compliance with API SPEC 7-1 standards. These inspections include visual dimensional checks as well as ultrasonic inspections over the entire body of the drill collar.
Rolling:
Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled. Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation.
Phosphate-coated or Copper Plating:
All connections are phosphate-coated or copper plated to improve resistance to corrosion.
Slip Groove, Elevator Groove and Size:
Huanjie offers optional slip and elevator recesses to improve handling efficiency and safety. Unless otherwise specified, slip and elevator recesses are machined in compliance with API spec 7-1 guidelines.
Thread Protectors:
Our company offers steel, cast steel and plastic steel thread protectors for its drill stem products.