7 7/8 Inch PDC Oil Drilling Bit

• Type: Center Drill Bit
• Material: Alloy Steel, Tungsten Carbide
• Usage: Well Drilling
• Certification: ISO
• Model Number: S/M
• Suitable Formation: Soft, Medium Soft, Hard, Medium Hard, Very Hard
• Model NO.: IADC CODE
• Transport Package: Wooden Case
• Specification: according requirement
• Trademark: HJ
• Origin: China
• HS Code: 8207191
• Production Capacity: 500

Product Description

HS1905 IADC S223/323
 The material of the bit adopts high quality steel and wear-resistance material with high performance is built-up welded on the surface of baldes to prevent matrix mqaterial form eroding.
Bit body is made from an integrated alloy forging and finished by advanced CNC machining center.
Deep and wide junk slots ensure bit cleaning and cooling of drilling  fluid ,which benefits fast drilling and anti-balling.
Adopts high performance PDC cutters ,increases the ability to drill through hard stringers and provides longer service life.
PDC cutters of different features are selected and bit profile design is optimized to suit differents when drilling applications in different formations to satisfy different requirements when drilling soft to medium hard formations.
According to the requirements of customers,desigh and produce different bits.


high quality PDC drill bit :
1. Cutting structure is force balanced and bit blade is asymmetrically designed so that the load on bit is balanced that 
resulting better stability of the bit.
2. Main cutter are high performance PDC cutters to insure service life of the bit while improving ROP.
3. Cutter exposure is optimized to insure the bit can achieve higher ROP is soft to medium formations.
4. Shock absorbers are designed to make the bit capable of drilling through formations with hard strigers.
5. Hydraulic system of the bit is optimized using dynamic flow pattern simulation technology to enhance cleaning and 
cooling effects of the bit to effectively prevent bit from balling.

Bit type		Main bit size(mm)	Rock coefficient
PDC core drill bit	Single pipe	75/54.5  94/74  113/89  113/109  153/129	1-18
	Two-pipes	75/54.5  94/68
PDC center drill bit	Concave 3 wing bit	60  75  94  113  133	1-18
	Arc pillar	60  75  94  113  133	4-18
	Many wing scraper	60  75  94  113  133   133  153  173  190  215	1-6
PDC Indexable drill bit		153/94   153/113       190/153   190/113	1-18

Company Information

 Hejian Hengji Bit Manufacture Co.,LTD  is specialized in manufacturing high quality rock bit,especially for tricone bit,PDC bit,hole opener,single cone bit and drag bit.with advanced CNC machines and R&D team and on-time delivery. We have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices .
    We ship to more than 40 different countries and serve industries such as Oil & Gas, water well , Construction,Mining,  Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe.
     Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop.  Reduce the cost ,Speed the drilling ,Guarantee the safety is always our aim.  We have been always insist on"Hengji bit,focusing on quality".  
 

Main products
tricone bit(mill tooth and tungsten carbide insert tricone bit)
PDC bit(matrix body and steel body PDC bit)
hole opener(HDD rock reamer,barrel reamer,etc)
drag bit(step drag bit,PDC drag bit,chevron drag bit,etc)
accessories(single cone,bit breaker,nozzle ,etc)   

Contact us
24 Hour Service Line: