Cangzhou Great Drill Co., Ltd is located in North China Oil Field, Junziguan industrial zone Hejian, north Beijing, east of Tianjin Port, whose registered fund is RMB7 million yuan. Our company specializes in designing, manufacturing 
and marketing high performance diamond bits and drilling tools which are used in petroleum industry. Our company was 
established by the top grade experts of the field and is equipped with advanced equipment and facilities. Our diamond bits 
are named as Great, with specifications ranging from 2 7/8" to 17 1/2". All our products have passed  ISO9001 certification.

SOFT TO MEDIUM FORMATION DRILLIING

Medium short parabolic profile with medium cutter density helps to obtain better ROP in soft to medium hard formations with lower com[ressive strength and small hard layers.

DURASET GAUGE

Gauge cutter promotes gauge wear resistance to provide long bit life.

HYDRAULICS

Cuttings removal and bit cooling for bits are optimized by matching the volume of rock removed by the cuter on each blade with the proportional fluid flow.

UNIQUE BACKRACK DEDIGN

The cutter’s backrack has been unique design, reducing the bit torque and increasing aggressiveness.

Product Description:

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.

PDC drilling bits superior features:

a.Polycrystalline Diamond Compact (PDC)

b.Inserts for high ROP and long bit life

c.High-performance seals and bearings

Nina Lang

tel: 86-317-3212988
fax: 86-317-3212998

mobilephone: 86-15830816371

Email: drillbits10(at)zkdrilling.com
MSN: nina1025(at)msn.cn
skype: langhongying43
QQ: 1932801191