api PDC diamond core drill bits

1.ISO9001:2008 2.OEM Available 3.Good quality 4.High wear resistance cutters

Main features: 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.

Theory:

 

PDC (polycrystalline Diamond Compact) drill bit is a new product after the hot-pressed and electroplated drill bit in recent years. With special high-frequency welding techniques, PDC of high wear resistant is welded to the body as cutting edges. PDC bit is mainly used for geological prospecting coal exploration, water conservancy and power engineering, etc.

 

Specifications:

Type	Bit Size				Std. API pin Shank Size(Inches)	Approximate Weight of bits(kg)
	O.D.		I.D.
	Inches	mm	Inches	mm
7 1/2×4 DFG1395A	7 1/2	190.5	4	101.6	74	24
8 1/2×4 1/8 DFG1395B	8 1/2	215.9	4 1/8	104.8	83	26
8 1/2×4 1/8 DFG1395A	8 1/2	215.9	4 1/8	104.8	83	26
8 3/8×4 DFG1395A	8 3/8	212.7	4	101.6	74	26

Note:The type numbers which are not shown in the table can be customized.

 

Parameters & Formations:

Bit Size (Inches)		Flow Rate(L/s)	Rotation Speed (r/min)	Weight of Bit (KN)	Pump Pressure (Mpa)
O.D.	7 1/2	16~22	50~80	50~80	7~9
	8 1/2
	8 3/8
I.D.	4 1/8	16~22	50~80	50~80	7~9
	4

Formations: soft to medium soft, such as shale, unconsolidated sandstorm, limestone, etc.

api PDC diamond core drill bits