API Casing Inner Mechanical Internal Cutter for Oil Well Cementing

• Customization: Available
• After-sales Service: 3 Years
• Warranty: 18 Years
• Manufacturing Process: Casting
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Transport Package: Wood Case & Standard Sea Packing
• Specification: O. D. 55-298mm
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 5000000PCS

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.

Specifications - Mechanical Internal Cutter

Model	Product  Code	O.D. (mm)	Connection Box	ID (mm)	ID of cut pipe (mm)	OD of cut pipe (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

Detailed Photos

Certifications

Packaging & Shipping

 

Company Profile

Our Advantages

Tianhe principle is to offer high quality products at competitive price to benefit our customers and the industry in the long run.
We are the Leading manufacturer in China since 1973 for drilling /fishing /milling equipment for oil and gas.
We have established a complete quality control system, all products& equipments manufactured as per international standard and API standard.
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time & Flexible payment terms.
3. Full range of drilling /fishing /milling equipment for oil and gas.
4. Timely after-sale service.
5. Imported International brands Machines such as Japan Mazak machining center, Austria WFL machining center etc
6. Complete quality control system, offices and testing equipment.
 

 

FAQ

Dear  customer,

Thanks for your time of visiting us on made in china, if you have any further questions and needs, please kindly inform us by inquiry online or contact us by below information.

We look forward to your kind reply, thanks very much.

Ms. Dongyan
Sales Manager

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd.