Boao April 9 news How to deal with "youth crisis"? On the morning of April 9th, at the Youth Leaders' Roundtable Meeting of the Boao Forum for Asia, 20 young leaders from politics, business, and academia gathered together. Chairman Liu Chuanzhi of the Legend Holdings Co., Ltd., Dr. Tim Schleffer, President of the International Special Olympics, and Liu Jie, the Olympic champion, and other young representatives initiated a wonderful dialogue.
At about 9:30 a.m., 20 guests did not wear suits and shoes, but chose a uniform light green T-shirt to appear. The whole conversation was relaxed and pleasant. At the beginning of the meeting, CCTV host Ruan Chenggang asked each guest to use a word to explain the youth's confusion and crisis. What did someone say to do? Some people say dreaming? Liu Ye used "secondary employment" to describe the crisis of the current athlete group.
Liu Hao said that when athletes retire, they are often around the age of 20. This should be the beginning of young people's struggle. However, for athletes, the dream is over. And we must lay down the accumulated honours for more than ten years. We must start from scratch when faced with new issues in life. At that time, our hearts need a strong capacity to bear.
Liu Chuanzhi, chairman of Legend Holdings Co., Ltd., said that the crisis of young people is a social progress. In order to start a business, young people must first understand what you are pursuing, and have ideals that are not ideal.
Lin Yu, CEO of Beijing Net-Qin Tianxia Technology Co., Ltd., is a self-made Chinese entrepreneur and he still wears a safety helmet this year. He said wearing a hard hat fits well with the theme of today’s meeting. "Young people start their own business ventures that require adventure and innovation. Of course, we also need a safety helmet ."
Hu Zhirong, chairman of the Hu Zhirong Cultural Fund, used the words "ideal" and "distance" to describe the crisis and confusion of young people. He believed that when people have a crisis, they cannot lose their ears and they must listen to their own crisis.
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TCI Tricone Bit include Rubber sealed bearing Tricone Bit , metal sealed bearing tricone bit , journal bearing tricone bit and roller bearing tricone bit
HA Rubber sealed bearing tricone bit Main structure features
1.Journal bearing. Hardfaced head bearing surface. Inner hole of cone is silver-plated. The load capacity and seizure resistance of the bearing is greatly improved. O ring seal is made of the more wear resistance high saturated buna-N with the increased seal section and precisely designed sealing flange in the cone desling area increased the reliability of the seal.
2.All rubber compensator is used which i\can limit pressure differential and prevent drilling fluid from entering the lubrication system and this provides the bearing system with good assurance of lubrication.
3.High wear resistance and excellent cutting ability of the insert bit are given full play by using carbide compacts of high strength and high toughness in combination with optimized compact numbers and rows,the exposure height and special shaped compacts. For steel tooth bit the tooth surface is hardface with new type of wear resistant material and thus extended working life of the cutting structure while still maintaining high ROP.
4.A row of inserts is added between gauge row and heel row of HA bit to trim borehole wall and protect cone shell and consequently,the special HAT series bit is formed.
HJT bit metal seal with journal bearing structure features
HJT series bit adopts metal seal with journal bearing which can drill stably with higher rotary speed.
1.Metal face seal journal bearing tricone bit . New professes of head bearing hardfacing and cone bearing silver plating are used to improve the load capacity,anti-galling ability and stability of the bearing.
2.Various 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.
3.A row of inserts is added between gauge row and heel row of HJ bit to trim borehole wall and protect cone shell,and as a result,HJT series bit is formed.
Rubber sealed journal bearing tricone bit Feature and application
HA417 437Formation: Very soft with low compressive strength and high drillability, such as shale,clay,sandstone and conglomerate,etc.
Normal WOB KN/mm (bit dia): 0.35~0.90
RPM:140~70 r/min
HA 517 527Formation:Soft with low compressive strength,such as shale,clay,sandstone,soft limestone,salt bed and hard gypsolyte,etc
Normal WOB KN/mm (bit dia): 0.35~1.05
RPM:120~50 r/min
HA537 547Formation: Medium soft with low compressive strength and harder abrasive stringers,such as hard shale,hard gypsolyte,soft limestone,sandstone and dolomite with stringers,etc
Normal WOB KN/mm (bit dia): 0.35~1.05
RPM:110~40 r/min
HA 617 627 Medium hard with high compressive strength and thick &hard stringers,such as hard shale,limestone,sandstone and dolomite,etc
Normal WOB KN/mm (bit dia): 0.35~1.05
RPM: 80~40 r/min
HA 637 Medium hard with high compressive strength and high abrasiveness ,such as limestone ,dolomite,sandstone and chert ,etc
Normal WOB KN/mm (bit dia): 0.70-1.20
RPM:70~40 r/minium hard with high compressive strength and high abrasiveness ,such as limestone ,dolomite, sandstone and chert ,etc
Normal WOB KN/mm (bit dia): 0.40~0.80
Rotary speed :180~80 r/min
The IADC code of TCI tricone bit
IADC HA 417,HA 427, HA 437, HA517, HA527, HA537, HA 547 ,HA617, HA627, HA637. IADC GA 435, GA 535, GA 635
HJ 417,HJ 427, HJ 437, HJ 517, HJ 527, HJ537, HJ547 ,HJ617, HJ627, HJ637. IADC GJ 435, GJ 535, GJ 635
The size of tricone bit
|
NO. |
Tricone bit size |
Thread sizes |
NO. |
Tricone bit size |
Thread sizes |
||
|
Inch |
mm |
inch |
mm |
||||
|
1 |
3-3/4 |
95.3 |
2-3/8 |
28 |
9-5/8 |
244.5 |
6-5/8 |
|
2 |
3-7/8 |
98.4 |
29 |
9-7/8 |
250.8 |
6-5/8 |
|
|
3 |
4-1/8 |
104.8 |
30 |
10-1/2 |
266.7 |
||
|
4 |
4-1/4 |
108.0 |
31 |
10-5/8 |
269.9 |
||
|
5 |
4-1/2 |
114.3 |
32 |
11 |
279.4 |
||
|
6 |
4-5/8 |
117.5 |
2-7/8 |
33 |
11-5/8 |
|
|
|
7 |
4-3/4 |
120.7 |
34 |
12 |
304.8 |
||
|
8 |
4-7/8 |
123.8 |
35 |
12-1/4 |
311.2 |
||
|
9 |
5-1/2 |
139.7 |
3-1/2 |
36 |
12-5/16 |
|
|
|
10 |
5-5/8 |
142.9 |
37 |
12-3/8 |
314.3 |
||
|
11 |
5-2/3 |
143.9 |
38 |
12-7/16 |
315.9 |
||
|
12 |
5-3/4 |
146.1 |
39 |
12-5/8 |
320.7 |
||
|
13 |
5-7/8 |
149.2 |
40 |
13-1/8 |
333.4 |
||
|
14 |
6 |
152.4 |
41 |
13-1/2 |
342.9 |
||
|
15 |
6-1/8 |
155.6 |
42 |
13-5/8 |
346.1 |
||
|
16 |
6-1/4 |
158.8 |
43 |
13-3/4 |
349.3 |
||
|
17 |
6-1/2 |
165.1 |
44 |
14-1/2 |
374.7 |
7-5/8 |
|
|
18 |
6-5/8 |
168.3 |
45 |
14-3/4 |
374.7 |
||
|
19 |
6-3/4 |
171.5 |
46 |
15-1/2 |
393.7 |
||
|
20 |
7-1/2 |
190.5 |
4-1/2 |
47 |
16 |
7-5/8 |
|
|
21 |
7-5/8 |
193.7 |
48 |
17-1/2 |
444.5 |
||
|
22 |
7-7/8 |
200.0 |
49 |
18-7/8 |
479.4 |
||
|
23 |
8-3/8 |
212.7 |
50 |
20 |
508.0 |
||
|
24 |
8-1/2 |
215.9 |
51 |
22 |
558.8 |
||
|
25 |
8-5/8 |
219.1 |
52 |
24 |
609.6 |
||
|
26 |
8-3/4 |
222.3 |
53 |
26 |
660.4 |
||
|
27 |
9-1/2 |
241.3 |
|||||
TCI Tricone Bit
TCI Tricone Bit, TCI Tricone Drill Bit, TCI Tricone Rock Drill Bits, API TCI Tricone Bit
Hejian Deris Petroleum Drilling Equipment Co.,Ltd. , https://www.welldrillingbit.com