We supply slick drill collars, spiral drill collars and non-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers' request.
Lowest price API 7-1 non magnetic spiral drill collar
Product Description
Drill Collar is the basic component in the BHA which provide weight on the bit for dirlling and keeps the drill string in tension.Drill collar is manufactured from AISI 4145H modified quenched and tempered steel and is heat treatment along its entire length for uniform toughness and durability. Srict netallurgical test are performed pre specifications to ensure that the heat treatment produces consisitent and maxium hardness through the depth of the bar.
Feartures and benefits:
1. hardness rannge of 285 to 341 BHN and a charpy impact value of 40ft/lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature
2.Connections ar phosphate coated afther machinning to protect the threads from corrosive elements and to prevent galling upon initial make -up
Thread roots are cold rolled on API and H0-90 connections
3.Pressed steel thread protectors are supplied fo all drill collar that are equipped with standard connections
We supply slick drill collars, spiral drill collars and non-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers' request.
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.
Cold 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:
Lake 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.
The SD1000 Full Hydraulic Core Drilling Rig is a robust piece of equipment designed for various drilling applications Lets dive into the details
Application Range The SD1000 crawler drill is primarily used for both diamond bit drilling and carbide bit drilling Its commonly employed in geological exploration mineral prospecting and core sampling
Specifications
Drilling Diameter 56 mm 71 mm 89 mm 114 mm 2 in 3 in 4 in 4 in
Drilling Depth 200 m 400 m 600 m 1000 m 65602 131204 196806 328010
Overall Length Working 5760 mm 227 in
Overall Width Working 2400 mm 94 in
Overall Height Working 9000 mm 354 in
Hole Range 65 89mm
Engine Power 156ps 115kw 2200rpm
Machine Weight 12400 kg 273373 lb
Motor Power 132 kW 17947 hp
Ultralfine grinding mill machine pulverizer ,Widely used for ultrafine grinding of dry materials in various industries such as traditional Chinese medicine, western medicine, pesticides, biology, cosmetics, food, feed, chemical industry, ceramics, etc. Especially for fibrous and high toughness materials such as cordyceps, tea, and lingzhi, the crushing effect is more perfect.
Crushing particle size 1-75um ,capacity 70-10000kg/hour.
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Best quality api 7-1 standard and sprial drill collar
Product description
Drill collar is the basic component in the bha which provide weight on the bit for dirlling and keeps the drill string in tension.Drill collar is manufactured from aisi 4145h modified quenched and tempered steel and is heat treatment along its entire length for uniform toughness and durability. Srict netallurgical test are performed pre specifications to ensure that the heat treatment produces consisitent and maxium hardness through the depth of the bar.
Feartures and benefits:
1. Hardness rannge of 285 to 341 bhn and a charpy impact value of 40ft/lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature
2.Connections ar phosphate coated afther machinning to protect the threads from corrosive elements and to prevent galling upon initial make -up
Thread roots are cold rolled on api and h0-90 connections
3.Pressed steel thread protectors are supplied fo all drill collar that are equipped with standard connection
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.
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
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
