8mm diamond core drill bit Certified by ISO9001 Covers all IADC codes Used for oil well drilling 8mm diamond core drill bit

Manufacturers Supply Various Models Of PDC drill Bit

1)Certified by ISO9001&API

2)Covers all IADC codes

3)Size:4 3/5" (116.8mm)~17 1/2" (444.5mm)

4)Used for oil well and water well

Several of hardness rocks or mud except the hardest hardness or uniform rocks like cobble.

Material                                      tungsten carbide,diamond

Brand                                         Kingdream,CS,JZ

Bit Diameters                           4.1/2", 4.3/4", 5.1/8", 5.5/8",,5 7/8",6",6 1/2",7 3/8",8 1/2",9 1/2", 9 5/8",9 7/8",12 1/4",12 1/2" etc.

Body Type                                 Matrix or Steel

Cutter Sizes                              5/16"(8mm),1/2"(13mm),5/8"(16mm),3/4"(19mm),etc

Blades                                       2~9 Wings

Model Number                         GD1905,GD1904,GD1905S,GD1606,GD1307,GD1307,GD1906,GD1605,etc.

1) Bit profile is optimized and is suitable for drilling soft to medium formations.

2) Cutting structure is force balanced, bit blade is asymmetrically designed, and spiral blade and spiral gage are also designed so that the load on bit is balanced which resulting better stability of the bit.

3) Multiple types of high performance PDC cutters are strategically arranged on bit for improved service life of the bit.

4) Shock absorbers are designed to make the bit capable of drilling through formations with hard stringers.

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.

6) Erosion on bit surface is effectively prevented by utilizing hardfacing material of highly erosion resistant and applying advanced base metal enhancement technology.

7) Ports on bit are also optimally designed to prevent erosion of water courses inside the bit.

Bits Parameters					Drilling Parameters
Size	Nozzle number	Gauge length		API connections	Hydraulic flow rate		Rotation speed	Weight on bit
in	No.	in	in		1/s	gpm	rpm	KN	KIbs
8 1/2	6-8	2-3	4 1/2		25-38	400-600	60-350	13-66	3-15
9 7/8	6-8	2-4	6 5/8		30-44	475-700	60-350	13-90	3-20
12 1/4	6-9	2-4	6 5/8		38-60	600-950	60-350	13-100	3-22
16	6-9	3-5	7 5/8		60-90	950-1450	60-350	17-135	4-30
17 1/2	6-9	3-5	7 5/8		60-90	950-1450	60-350	17-135	4-30

8mm diamond core drill bit