20 inch Reverse Circulation Tricone Drill Bit IADC517/537 Rock Drill Bit for Well Drilling
20 inch Reverse Circulation Tricone Drill Bit IADC517/537 Rock Drill Bit for Well Drilling
We sold tricone drill bits ove 100 countries in globe and serve industries such as Oil & Gas, water well, Construction, Mining, Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe.
Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop. Reduce the cost ,Speed the drilling ,Guarantee the safety is always our aim.
Description
We are constantly improving the efficiency of our work in order to respond more quickly to changes in customer demand for our Acid Conveying Skid, Fracturing Manifold Skid, Choke Manifolds. We take science and technology to ensure a prosperous country and serve it with hard work as a historic mission. Our company strives for development by quality and innovation, thus taking a leading position in the industry. Facing the fiercely competitive market, we have worked hard, actively explored, and accumulated a lot of experience with our keen observation and indomitable spirit. We strictly abide by corporate ethics, contract and keep promises. Our company adheres to the core values of 'pursuing excellence, teamwork and mutual achievement'! Facing the future, we will continue to control the quality of our products and meet market demands with better products and services.
1. Introduction
This series of rock bit adopts metal seal with journal bearing, which can drill stably with high rotary speed. It’s the ideal part of well section. The size range of rock bit is from 3-1/2 to 26 inch and IADC varies from 117 to 837.
2. Main Structure Features
a. Metal face seal journal bearing. New processes of head bearing hardfacing and cone bearing silver plating are used to improve the load capacity, anti-galling ability and stability of the bearing .
b. Varies shapes of inserts can be equipped on this series of bits, including scoop inserts, wedge inserts, conical-spherical inserts and double spherical inserts, etc. Drilling process & formation and bit are efficient integrated by scientific insert shape selection to realize safety and high efficient drilling.
c. For this series, a row of inserts is added between gage row and heel row to trim borehole wall and protect cone shell.
3. Main Models, Applicatiosn And Technical Specifications
3.1 Applicable Fromation For Different Kinds Of Rock Bit
| IADC | WOB(kn/mm) | RPM | Applicable Formations |
| (bit diameter) | (r/min) | ||
| 117 | 0.35-0.8 | 240-80 | Very soft fromations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc. |
| 127 | 0.35-0.9 | 240-70 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shales, soft limestone, etc. |
| 437 447 | 0.35-0.9 | 240-70 | Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft shale, soft limestone, etc. |
| 517 527 | 0.35-1.0 | 220-60 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt shale, soft limestone, etc. |
| 537 547 | 0.45-1.0 | 220-50 | Soft to medium formations with low compressive strength, such as medium soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. |
| 617 627 | 0.45-1.1 | 220-50 | Medium hard formations with high compressive strength, such as hard shales, limestone, sandstone, dolomite, etc. |
| 637 | 0.5-1.1 | 180-40 | Hard formations with high compressive strength, such as sandstone, limestone, dolomite, hard gypsum, marble, etc. |
Note: the uppper limits of WOB and RPM in above table should not be used simultaneously.
3.2 Available Rock Bit Size
Tricone Rock Drill Bits Specifications
| Tricone Bits Specifications | |||
| Regular Sizes | Regular IADC | API Reg Pin | Make-up Torque(N.m) |
| 3 7/8"(98.4mm) | 126/216/517/537/637 | 2 3/8 | 4100~4700 |
| 4 5/8"(117.4mm) | 126/216/517/537/637 | 2 7/8 | 6100~7500 |
| 5 1/2"(139.7mm) | 126/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 5 5/8"(142.8mm) | 126/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 5 7/8"(149.2mm) | 126/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 6"(152.4mm) | 126/127/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 6 1/4"(158.7mm) | 126/127/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 6 1/2"(165mm) | 126/127/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 7 1/2"(190mm) | 126/216/517/537/637 | 4 1/2 | 16300~21700 |
| 7 5/8"(193mm) | 126/216/517/537/637 | 4 1/2 | 16300~21700 |
| 7 7/8"(200mm) | 126/216/517/537/637 | 4 1/2 | 16300~21700 |
| 8 1/2"(215.9mm) | 117/127/217/437/517/537/617/637 | 4 1/2 | 16300~21700 |
| 9 1/2"(241.3mm) | 117/127/217/437/517/537/617/637 | 6 5/8 | 38000~43400 |
| 9 7/8"(250.8mm) | 117/127/217/437/517/537/617/637 | 6 5/8 | 38000~43400 |
| 10 5/8(269.8mm) | 117/127/137/217/517/537/617/637 | 6 5/8 | 38000~43400 |
| 11 5/8(295.3mm) | 117/127/137/217/517/537/617/637 | 6 5/8 | 38000~43400 |
| 12 1/4"(311.1mm) | 114/127/217/437/517/537/617/637 | 6 5/8 | 38000~43400 |
| 13 5/8"(346.0mm) | 127/217/517/537/617/637/737/837 | 6 5/8 | 38000~43400 |
| 14 3/4"(374.6mm) | 127/217/517/537/617/637/737/837 | 7 5/8 | 46100~54200 |
| 17 1/2"(444.5mm) | 114/115/125/215/515/535/537/615/635 | 7 5/8 | 46100~54200 |
| 20''(508.0mm) | 114/115/125/215/515/535/537/615 | 7 5/8 | 46100~54200 |
| 22''(558.8mm) | 114/115/125/215/515/535/537/615 | 7 5/8 | 46100~54200 |
| 24''(609.6mm) | 114/115/125/215/515/535/537/615 | 7 5/8 | 46100~54200 |
| 26"(660.4mm) | 114/115/125/215/515/535/537/615 | 7 5/8 | 46100~54200 |
Best regards,
Phiger Leo
Direct Line: 0086-137-6419 5009
WeChat/WhatsApp:: +86-137-6419 5009
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