20inch TCI Tricone Bits, Rock Bits for Oil Field Drilling
This series of rock bit adopts metal seal with journal bearing, which can drill stably with high rotary speed.
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 tricone 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 |
| Rock bit size |
Rock bit size |
Rock bit size |
Rock bit size |
| in |
mm |
in |
mm |
in |
mm |
in |
mm |
| 3 1/2 |
88.9 |
7 1/2 |
190.5 |
10 5/8 |
269.9 |
14 5/8 |
371.5 |
| 4 5/8 |
117.5 |
7 7/8 |
200 |
11 |
279.4 |
14 3/4 |
374.6 |
| 4 3/4 |
120.6 |
8 1/4 |
209.6 |
11 5/8 |
295.3 |
15 1/2 |
393.7 |
| 5 1/2 |
139.7 |
8 3/8 |
212.7 |
12 1/8 |
308 |
16 |
406.4 |
| 5 7/8 |
149.2 |
8 1/2 |
215.9 |
12 1/4 |
311.1 |
17 1/2 |
444.5 |
| 6 |
152.4 |
8 3/4 |
222.2 |
12 15/32 |
316.7 |
20 |
508 |
| 6 1/4 |
158.8 |
9 1/2 |
241.3 |
13 1/8 |
333.4 |
24 |
610 |
| 6 1/2 |
165.1 |
9 5/8 |
244.5 |
13 5/8 |
346.1 |
26 |
660.4 |
| 6 3/4 |
171.4 |
9 7/8 |
250.8 |
13 3/4 |
349.3 |
36 |
914.4 |
Tricone Rock Drill Bits Specifications
4. Products In Factory
We will provide good quality 20inch TCI Tricone Bits, Rock Bits for Oil Field Drilling with fast and caring service as always, and will sincerely cooperate with old and new customers to create a better tomorrow together! Our corporate culture is centered on the overall development of people and guided by the corporate vision. I am proud because I have a group of lovely and professional comrades in arms with me, every comrade in arms is an important family member.
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