High Quality Oilfield Mechanical Internal Cutter/Down-Hole Mechanical Cutting Tool

• After-sales Service: Support
• Warranty: Support
• Manufacturing Process: Forging
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Model NO.: ND-J73*55
• HS: 8208101900
• Connection: Nc Reg Nu EU
• ID mm: 8-50
• Od mm: 55-210
• Transport Package: Wooden Box
• Specification: see the detail specification
• Trademark: Tianheoil
• Origin: China
• HS Code: 8208101900
• Production Capacity: 50000

Product Description

Product Description

The ND-J type internal cutter is a down-hole mechanical cutting tool designed to cut casings,

tubings and drill pipes. The main advantages are its simple structure, reliable performance and

high cutting efficiency. In order not to cut the casing and tubing couplings, the cutter shall be

kept away from these couplings during operation. Depending on drilling conditions, it can be

used in conjunction with coupling locator to locate the position of the nearest coupling from the

cutter. When the internal cutter is used with the releasing spear, it can cut and remove the cut

tubing in one fishing operation. Alternatively, a separate fishing tool can be used to remove cut

pieces.

Working Principle

Lower the internal cutter to a designated cutting depth, rotate (3 rounds) the cutter mandrel in

the clockwise direction to separate the sliding sleeve and the sliding sheet. At this instance,

with the spring effect, the friction block will be pressed against the pipe wall. In addition, due to

the engagement of the sliding sleeve and sheet, the main center body and the slip portion is

pushed upwards along the tapered slip cone, expanding the slip diameter. As the slip diameter

expands, it bites on the internal wall of the drill pipe. At this moment, anchor the cutter on the

pipe wall and lift the cutter mandrel by 10mm. After which, slowly lower and rotate mandrel, as

the cutters (3 pcs) move down the tapered cutter block, it open up radially to cut the pipe wall.

The cutting operation is completed when the mandrel pressed against the end of the thrust

ring. Lift the mandrel to release and reposition the cutters via its own weight and the function

of the blade spring. As the mandrel is lifted, the sliding sleeve and sheet re-engage back to

its original position. In addition, as the tapered slip cone moves upwards, the slip loses its grip

on the pipe wall and the cutter releases its anchor on the wall. Continue to lift mandrel until the

locating ring engages with the guide nut before pulling the tool out.

When ordering please specify:

Pipe size and weight to be cut.

Top connection.

 

Product Parameters

Model	Product  Code	O.D. (mm)	Connection Box		ID (mm)	ID of cut pipe (mm)		OD of cut (in)
ND-J73×55	X04-73000	55	1.9 NU		8	59-62		2 7/8
ND-J89×67	X04-89000	67	1.9 EU		13	70-78		3 1/2
ND-J114×91	X04-114000	91	NC26		16	97-104		4 1/2
ND-J127×102	X04-127000	102	NC26		18	107-115		5
	X04-127100		2 7/8 REG
ND-J140×112	X04-140000	112	NC31		15	118-128		5 1/2
	X04-140100		2 7/8 REG
ND-J178×145	X04-178000	145	NC38		38	150-166		7
	X04-178100		NC31
	X04-178200		3 1/2 REG
ND-J245×210	X04-245000	210	NC50		50	216-228		9 5/8

Certifications

              

Company Profile

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.

As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.

Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.

So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.

We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.