12 1/4′ ′ HDD Hole Openers Reamer Rock Bits

• Customization: Available
• Customized: Customized
• Standard: ISO
• Model NO.: 117 217 537 737
• Length: 100~150
• Type: Center Drill Bit
• Material: Tungsten Carbide
• Usage: Well Drilling
• Size: 12 1/4
• Type1: HDD
• Cutters: TCI Tricone
• New: 100%
• Formation: Hard
• Transport Package: Wooden Case
• Specification: according requirement
• Trademark: HJ
• Origin: Hebei
• HS Code: 8207191
• Production Capacity: 100

Product Description

Drilling hole openers in oilfield during drilling

Hole opener drill bit
1. Hole openers are designed for the enlargement of pilot holes and large hole applications. They
Are also used for road and river crossing application.
2. The hole openers are manufactured from AISI 4145H fully heat-treated alloy steel. All are available with carbide-milled teeth and insert cutters. Arms and cutters are hardfaced for protection in three different designs for varying conditions and rock formations. The design of the hole opener allows for field-changing the cutters. They has a wide range of hole opener types, including.
Cutting Structure
The reamer mainly consists of four or more cones. Cutting Structure with premium tungsten carbide hardfacing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistance capability of reamer. The pilot is three cone bit( tricone bit ).

Seal and Lubrication
High performance HNBR O-ring for bearing seal and advanced grease for lubrication.

Product Application
It is suitable for the large size well, mining and infrastructure applications.

 

Bit Size(in)	Connection	Bit Size(in)	Connection
3 3/8, 3 3/4, 3 7/8 4 1/8, 4 1/4	2 3/8   REG	9 1/2,   9 5/8 , 9 7/8 10,   10 1/2,   10 5/8 11, 11 5/8	6 5/8   REG
4 3/8, 4 1/2 4 5/8, 4 3/4 4 7/8	2 7/8   REG	12,   12 1/4, 12 5/16 12 3/8, 12 7/16, 12 5/8 13 1/8,   13 3/4, 13 5/8 13 1/2	6 5/8   REG
5 1/8, 5 1/2, 5 5/8 5 7/8 6, 6 1/8, 6 1/4 6 1/2, 6 3/4, 6 5/8 6 7/8	3 1/2   REG	14 1/2, 14 3/4 15 1/2 17 1/2	7 5/8   REG
7 1/2, 7 5/8, 7 7/8 8 3/8, 8 1/2 8 5/8, 8 3/4	4 1/2   REG	20, 22, 24, 26	7 5/8   REG
IADC CODE	(MT) 116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337 115 125  135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
	(TCI)417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625  635 416 427 436 446 447 516 526  537 547 516 536  535