121/4" hybrid bit PDC bit and tricone bit for drilling

Diameter:311mm
Blade Qty:6pcs
Nozzle quantity : 9
Thread type:7 5/8''
Use : Well Drilling

Product details

The rotation of the drill bit drives the roller to roll. Under the action of the static load of the axial pressure and the dynamic load when the roller rotates, the roller bit will eat and crush the rock in different ways such as crushing, impacting, shearing and scraping. During the drilling process, the roller on the drill bit not only rotates around the tooth claw shaft neck, but also revolves around the center of the drill bit, so that the rock is crushed and discharged out of the hole. The entire drill bit continuously pushes downward during the rotation process, which can adapt to a variety of rock formations from soft to hard. According to their uses, roller drill bits can be divided into oil (drilling), mining, and engineering roller drill bits; according to the number of rollers, they can be divided into single-roll, three-roll, and combination roller drill bits; according to the cutting material, they can be divided into steel-tooth (milling-tooth) and insert-tooth roller drill bits, which require the tooth steel to have high strength, toughness, wear resistance, and corrosion resistance.

Rock drilling tools manufacturer ProDrill™: PDC (Poly-Crystalline Diamond Compact/Composite) drill bits are an effective tool for drilling into homogeneous sedimentary rock formations such as shale, sandstone, dolomite, limestone etc. These rotary drilling bits use the shearing scraping or shaving action when encountering the rock formation. PDC bits are the most rigid of all the diamond tool materials. They are made by combining layers of Poly-Crystalline Diamond (Synthetic Diamond) with substrate of carbide at high temperature and pressure.

ProDrill™ manufactures high quality PDC bits which have been specially designed to withstand higher impact and abrasion. Our PDC bits are of premium quality being used extensively in water bore drilling, oil and gas exploration.

1. Dia.65mm 75mm 89mm 94mm, 110mm, 112mm 127mm,140mm,152mm,165mm,178mm,190mm.
2. super hard material combined with diamond and hard alloy under high temperature
3. Polycrystalline diamond compacts
PDC drill bit is super hard material combined with diamond and hard alloy under high temperature. It not only has the advantages of hard and durable from diamond, but also has the advantages of high impact resistance and big blade from hard alloy. I t greatly improve the drilling efficiency and is the ideal drill bit for the drill operation of medium &hard as well as super hard rock.
The carrier of PDC bits is forged and pressed by first -class steel. Its mechanical capacity is strengthen by fully automatic vacuum heat treatment equipment.
The ordinary type adopts Chinese PDC as its blade, while the super-strong type adopts American blade by GE. Choosing proper type makes high ratio of performance and price.
Our PDC drill bits are widely used in all industries, such as coal mining, oil exploration, geological exploration, water and hydroelectric, railway and road, tunneling construction and so on.
Two-wing PDC anchor bits(semi-round standard type) is applied to the hardness not bigger than f8.The working life is 10-30 times of the ordinary alloy bits, and the efficiency could be improved by 60%.Besides, the PDC bits do not require figuring, which lows the labor intensity and helps to save cost.
GE, American company, produces the main material of blade for two-wing PDC anchor bits (semi round strengthened type).The diamond content is 1.5 times of the ordinary bits, which has excellent abrasive resistance and applied to medium and hard rock(f<12).
Super strengthened PDC bits adopts newly designed ball type diamonds its blade. Features: fast drilling speed, high impact resistance.

When the drill bits work, the edge is used to cut ordinary and symmetrical formation, while the ledge acts as cushioning to avoid huge drilling footage, which helps to low the possibility of damage. Thanks to that, the drilling level of complicated is improved.

Drilling parameter
No.	Dia.mm	Drilling pressure (Kg)	Rotate speed (rpm)	Pump volume(1/min)
1	28	300-700	300-500	150-200
2	30	300-700	300-500	150-200
3	32	300-700	300-500	150-200
4	48	300-700	300-500	120-160
5	56	320-800	250-350	130-180
6	75	480-1200	200-300	150-200
7	94	640-1600	150-250	200-250
8	110	880-2200	120-200	200-300
9	152	1500-3000	100-200	500-850
10	190	1800-4000	100-200	600-1200
11	230	2200-4500	100-200	750-1400
12	270	2400-5000	100-200	1000-1500

The following are other rock tools from ProDrill™

1-12 inch middle-low/high air pressure DTH hammers & bits
Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling
Eccentric overburden drilling Equipment
Hole opener bit
Rock thread bit

Shank adapter, coupling sleeves and all kinds of adapters

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121/4" hybrid bit PDC bit and tricone bit for drilling