8 1 4 spiral drill collar

Brand Name:Pangolin

Place of Origin:Hebei China

... chemical composition and achieved its mechanical properties by forging. When the magnetic field strength is 1 × 105 / 4π A / m, the relative permeability μr≤1.010 of the non-magnetic drill collar. The

Place of Origin:China

Brand Name:SHUGUANG

The surface finish of slick drill collar shall be hot-rolled and mill –finished. Spiral drill collar is to do slot turning outside the surface. Spiral groove on drill collar 's OD make the drilling fluid evenly, equal pressure, with less differential ...

Brand Name:TR Solids Control

Model Number:NC23-31

Place of Origin:Xi'an China

...und the drill collar to balance pressure preventing pressure block, so effectively avoid bit sticking from differential pressure. Spiral collar can also reduce the contact area between the wall and tubular body, so as to avoid from sticking phenomenon of

Brand Name:Pangolin

Place of Origin:Hebei China

...Drilling Spiral Drill Collar Spiral Drill Collar Non Magnetic Drill Collar For Oil Rig Drilling Advantages Since all magnetic measuring instruments can sense the geomagnetic field in the borehole when measuring the borehole direction, the measuring instruments must be in a non-magnetic environment. However, in the drilling process, the drilling...

Brand Name:JCDRILL

Model Number:175*4500mm

Place of Origin:Hebei,China

... to drill pipe and centralize the drill bit. According to API Spec7-1 specifications, the material quality is 4145H that’s after heat treatment, thread hardening treatment and phosphate to better ...

Brand Name:ROSCHEN

Model Number:6.750”, 8.75", 9.5"

Place of Origin:China

Non-Magnetic Spiral Drill Collars Non-magnetic drill collars: NMDCs are generally flush (nonspiral). They are manufactured from high-quality, corrosion-resistant, stainless steel. They are used while running the magnetic survey instruments to be located...

Model Number:All types

Place of Origin:China

...Spiral DC Drill Collar For Oil Well Drilling Drill collars are extra-heavy integral tools used to concentrate weight onto the drill bit so as to produce sufficient force for the drill bit to break rock efficiently while drilling. They are made of AISI 4145H or 4145H modified steel and are connected between drill pipes and drill bits. Our drill collar...

Brand Name:DINGSCO

Model Number:According to customers' requests

Place of Origin:China

Non Magnetic Spiral Drill Collar Alloy Steel Drill Rig Tools For Oil Drilling 1,Introduction Magnetic drill collars are made of low carbon high chromium manganese alloy steel, which is refined by strict chemical composition ratio and forged to achieve its ...

Place of Origin:Jiyuan, China (Mainland)

Brand Name:KY

... of 285-341HB and a charpy “V”notch impact value of 54 joules are guaranteed one inch below the surface When enquiries or orders,please specify: Slick or spiral ;

Brand Name:HuiChi (HC)

Model Number:Drill Collar Series

Place of Origin:China

...Spiral And Non-Magnetic Drill Collars In Various Sizes For Petroleum Drilling ________________________________________ Product overview: The Drill Collar produced and sold by our company Huichi Petro is one of the core tools in oilfield drilling operations. It is a thick-walled, heavy-weight tubular drill bit that is connected between the drill pipe and the drill bit and is an important part of the drill

Place of Origin:China

Brand Name:Kangyu

Model Number:ZH-JZ55-5 1/2FH

Drill Collar features: • High quality, unique material • Special medium frequency heat treatment method • Meet the requirements of API SPEC7-1 • Aadvanced super magnetic method and mechanical properties •Strict quality management system •We can provide the common drill collar, Spiral drill collar,and non-magnetic Drill Collar...

Brand Name:ZS

Model Number:13 3/8″ to 4 1/2″

Place of Origin:China,Henan

API one piece stop collar with set screw, Set Screw Stop Collar 7" Description of stop collar: The stop collars are available in three types: Knock-On Type, Spiral Nail Type and Set Screw Type. The stop collars can be installed on any position on casing...