According to the number of cones, it can be divided into single-cone bit, tri-cone bit and assembled multi-cone bit. According to the cutting material, it can be divided into steel teeth (milling teeth) and insert roller bits.
The roller cone bit has been widely used as a tool for drilling rock formations. Significant improvements in drill performance directly reduce drilling costs, especially in the last decade. Two performance indicators, service life and drilling speed, which ultimately determine the extent to which the drill bit affects drilling costs. Increasing the drilling speed and service life of the drill bit is an effective way to reduce the drilling cost. It is confirmed by the data that the improvement of the drilling speed is more important than the improvement of the life of the drill bit to reduce the drilling cost. The improvement of the cutting structure of the drill bit is to improve the mechanical mechanism of the drill bit. The most direct method of drilling speed. For a long time, the improvement of cutting structure has mainly focused on the main cutting tooth structure. For example, in the case of cemented carbide tooth structure, wedge tooth, spoon tooth, partial spoon tooth, and other wear teeth have been invented. . It is gradually recognized that the gauge structure also has a great influence on the drilling speed and life of the drill bit. Especially in the case of high-angle wells and horizontal wells, the drill bit requires a reasonable diameter-preserving structure, and many new-type gauge structures have been researched and developed. Good results have been achieved when applied to roller cone bits.
The most widely used in oil drilling and geological drilling is the roller bit. The roller bit has the function of impact, crushing and shearing to break the formation rock when it is rotated. Therefore, the roller bit can adapt to various layers of soft, medium and hard. Especially after the emergence of the jet cone bit and the long nozzle cone bit, the drilling speed of the roller bit has been greatly improved, which is a major revolution in the development history of the cone bit. According to the type of teeth, the roller cone bit can be divided into milling gear (steel tooth) roller cone drill bit, insert tooth (carrying carbide tooth on the cone), roller cone drill bit, and can be divided into single cone drill bit and three teeth according to the number of cones. Wheel bit and assembly multi-cone bit. The most widely used and most commonly used is the tri-cone bit.
| PRODUCT SPECIFICATIONS |
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| product name |
6 inch CR537 TCI tricone bit |
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| size |
6 inch,152.4mm |
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| model number |
CR537 |
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| series |
CR |
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| tooth type |
TCI |
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| connection |
3 1/2" API Reg |
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| bearing |
rubber sealed journal bearing |
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| Nozzle |
three jet nozzles |
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| application |
water well,oil well,HDD,exploration,etc |
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| weight |
20kg |
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| certificate |
API7-1,SY/T5164,ISO9001:2008 |
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| RECOMMENDED ROCK FORMATION |
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| medium soft with low compressive strength and harder abrasive stringers,such as shale,hard gypsolyte,soft limestone,sandstone and dolomite with stringers,etc. |
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| RECOMMENDED DRILLING PARAMETERS FOR APPLICATION |
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| Type&IADC code |
417 |
437 |
447 |
517,527 |
537,547 |
617,627 |
637,647 |
737,837 |
| WOB(KN/mm) |
0.35~0.90 |
0.35~0.95 |
0.35~1.00 |
0.35~1.05 |
0.35~1.05 |
0.35~1.05 |
0.70~1.20 |
0.70~1.20 |
| RPM(r/min) |
140~70 |
140~60 |
140~60 |
120~50 |
110~40 |
80~40 |
70~40 |
70~40 |
Product Usage
Drilling, exploration, oil, drill bits, drilling accessories, non-excavation
product name
H series O-shaped rubber sealed plain bearing drill bit.
Features
1. High-strength and high-toughness hard alloy teeth are used to improve the impact resistance of the teeth and reduce the breaking rate;
2. Optimized design of the number of teeth, the number of teeth, the height of the tooth and the unique shape of the alloy tooth, fully exploiting the cutting ability and cutting speed of the drill;
3, using a circlip to lock the cone, can withstand high drilling pressure;
4. The inner hole of the cone is inlaid with anti-friction alloy to improve the anti-seizure ability of the bearing;
5. The high-saturated nitrile rubber O-ring seal is used, and the optimized sealing compression improves the reliability of the bearing seal;
6. It adopts the all-rubber oil storage bladder which can limit the pressure difference and prevent the drilling fluid from entering the lubrication system, which provides good lubrication for the bearing system and ensures the normal operation of the "O"-shaped sealing ring and improves the working life of the drill bit;
7, using a new grease that can withstand high temperatures of 250 ° C, low wear, improve the ability of the bit seal lubrication system to withstand high temperatures.
Product advantages
It can withstand higher drilling pressure when used at normal speed.
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