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393.7mm Dth Hammer Drill Bits , IADC537G Tci Tricone Bits For Water Well Drilling

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Brand Name :
Model Number :	IADC517,537,617,637,etc
Certification :	API & ISO
Price :	USD500-3000/spc
Payment Terms :	L/C, T/T, Western Union, MoneyGram
Supply Ability :	800 pcs per month
Delivery Time :	7-30 days

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393.7mm Dth Hammer Drill Bits , IADC537G Tci Tricone Bits For Water Well Drilling

15 1/2" (393.7mm) IADC537G TCI Tricone Bit For Water Well Drilling,Water Well Drill Bit

Description of Tricone Bits:

The tricone drill bit is the most popular drilling bit in the world,it can be widely used for Oil&Gas Drilling,Mining,Water Well,Geological Exploration areas.Our tricone bit divideds into metal sealed drill bit and rubber sealed bit.

1. The C-Center jet can avoid the formation of a ball in the bit, eliminate the fluid area at the bottom of the well, accelerate the upward flow of drilling cuttings and improve ROP.

2. High saturation NBR bearings can reduce sealing pressure and improve sealing reliability.

3. The G-Gauge protection improves the measuring ability and prolongs the service life of the bit.

4. Adding a row of teeth between the rear taper and the outflow to trim the borehole and protect the cone.

Tricone Bits Specifications
Regular Size	API reg pin	Regular Size	API reg pin
3 7/8(98mm)	2 3/8	4 5/8(118mm)	2 7/8
5 5/8(142.8mm)	3 1/2	5 7/8(149.2mm)	3 1/2
6 (152.4mm)	3 1/2	6 1/2(165)	3 1/2
7 1/2(190mm)	4 1/2	7 5/8(193mm)	4 1/2
8 1/2(215.9)	4 1/2	9 1/2(241. .3mm)	4 1/2
10 5/8(269.8mm)	6 5/8	11 5/8(295.3mm)	6 5/8
12 1/4(311.15mm)	6 5/8	13 5/8(346mm)	6 5/8
15 1/2(393mm)	7 5/8	16(406.0mm)	7 5/8
17 1/2(445mm)	75/8	26(660mm)	7 5/8

Rock formation		Bit type	Bit size		Drilling weight	Rotary speed
Rock formation		Bit type	mm	inch	kN/mm	r/min
Very soft	Soft Marl, Clays, Sands, Salts etc.	1	187.3~346.1	7 3/8~13 5/8	441~735	120~50
soft	Clays, Soft Shale, Marl, Sands, Salts etc.	2	95.2~174.6	3 3/4-6 7/8	245-490	100-50
soft	Clays, Soft Shale, Marl, Sands, Salts etc.	2	187.3~346.1	7 3/8-13 5/8	490-784	90-40
Medium soft	Shale, Marl, Sandstone, Soft Limestone etc.	3	95.2~174.6	3 3/4-6 7/8	245-490	80-40
Medium soft	Shale, Marl, Sandstone, Soft Limestone etc.	3	187.3~311.1	7 3/8- 12 1/4	490-784	80-40
medium	Hard Shale, Limestone, Medium/Hard Sandstone etc.	4	95.2~174.6	3 3/4-6 7/8	294-539	80-60
medium	Hard Shale, Limestone, Medium/Hard Sandstone etc.	4	187.3~241.3	7 3/8-9 1/2	539-833	60-40
medium hard	Hard Dolomite, Limestone, Hard Sandy, Rock etc.	5	95.2~174.6	3 3/4-6 7/8	294-539	80-60
medium hard	Hard Dolomite, Limestone, Hard Sandy, Rock etc.	5	187.3~241.3	7 3/8-9 1/2	539-833	60-40
hard	Sandy, Shale, Quartzite, Hard Dolomite, Hard Sandstone etc.	6	95.~-174.6	3 3/4-6 7/8	294-539	80-40
hard	Sandy, Shale, Quartzite, Hard Dolomite, Hard Sandstone etc.	6	187.3-215.9	7 3/8-8 1/2	580-882	60-40
Very hard	Quartzite, Chert, Basalt Granites, Pyrites etc.	7	95.2-174.6	3 3/4-6 7/8	294-539	80-40

Optimal test method for drilling parameters:

1. Drill for 5 minutes with initially selected proper WOB and moderate RPM (60~100r/min) and record the ROP (as shown in the table below).

2. Moderately inctease WOB and keep the same RPM and drill under this WOB for 5 minutes and again record the RPO (as shown in the table below).

3. Decrease WOB b the same extent and tepeat step 2.

4. Find the WOB in the tow groups of test than can yield highest ROP.

5. Properly change RPM under optimal WOB and record the ROP (as shown in the table below).

6. Select the RPM at the highest ROP.

7. Set the drilling parameter at the best combination:60KN RPM: 120r/min

Times	RPM:100r/min		WOB:60KN
Times	WOB (KN)	Drilling hour (Min/m)	RPM (r/min)	Drilling hour (Min/m)
1	80	8	100	7
2	100	9	120	5.5
3	60	7	80	8
Select	60	7	120	5.5

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Dongying Machinery Equipment Co.

Address: North Two Road, Dongying City, Shandong Province, China.

Mob/whats app/we chat:+86 13475294399

*Email: christal@oilmancn.com Website: www.oilmanchina.com

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393.7mm Dth Hammer Drill Bits , IADC537G Tci Tricone Bits For Water Well Drilling