Under the effect of the WOB and the twist of the drill string, the teeth of the tci tricone bit are crushed and eaten into the rock, and at the same time there is a corresponding sliding to shear the rock. When it rolls at the bottom of the well, the teeth on it will impact and press into the formation in sequence. This effect can crush a part of the rock at the bottom of the well, and at the same time rely on its sliding to weaken the shearing effect of the teeth. The remaining rocks in between break all the rocks at the bottom of the well and allow the wellbore to be extended.
Specifications Of TCI Tricone Drill Bits
|
Tricone Bits
|
|
Size
|
IADC Code
|
API Thread
|
|
inch
|
mm
|
|
3 7/8''
|
98.4
|
126/216/637
|
2 3/8
|
|
4 7/8''
|
117.4
|
126/216/517/537/637
|
2 7/8
|
|
5 1/4''
|
133.3
|
126/216/517/537/637
|
3 1/2
|
|
5 5/8''
|
142.8
|
126/216/517/537/637
|
3 1/2
|
|
5 7/8''
|
149.2
|
126/216/517/537/637
|
3 1/2
|
|
6''
|
152.4
|
126/127/216/517/537/617/637
|
3 1/2
|
|
6 1/4''
|
158.7
|
126/127/216/517/537/617/637
|
3 1/2
|
|
6 1/2''
|
165
|
126/127/216/517/537/617/637
|
3 1/2
|
|
7 1/2''
|
190
|
126/216/517/537
|
4 1/2
|
|
7 5/8''
|
193
|
126/216/517/537
|
4 1/2
|
|
7 7/8''
|
200
|
126/216/517/537
|
4 1/2
|
|
8 1/2''
|
215.9
|
117/127/217/437/517/537/617/637
|
4 1/2
|
|
9 1/2''
|
241.3
|
117/127/217/437/517/537/617/637
|
6 5/8
|
|
9 7/8''
|
250.8
|
117/127/217/437/517/537/617/637
|
6 5/8
|
|
10 5/8''
|
269.8
|
117/127/217/437/517/537/617/637
|
6 5/8
|
|
11 5/8''
|
295.3
|
117/127/217/437/517/537/617/637
|
6 5/8
|
|
12 1/4''
|
311.1
|
117/127/217/437/517/537/617/637
|
6 5/8
|
|
13 5/8''
|
346
|
127/217/517/537/617/637
|
6 5/8
|
|
14 3/4''
|
374.6
|
127/217/517/537/617/637
|
7 5/8
|
|
17 1/2''
|
444.5
|
114/115/125/215/515/535/615/635
|
7 5/8
|
|
26''
|
660.4
|
114/115/125/215/515/535/615
|
7 5/8
|
TCI Drill Bit Performance
The roller cone bit has the functions of impacting, crushing and shearing the formation rock when it rotates, so the roller cone bit can adapt to various soft, medium and hard formations.
The 8 1/2'' inch IADC437 roller cone bit is suitable for low compressive strength and high drillability of large sections of very soft ground, such as shale, clay, sandstone, conglomerate, etc.
As one of drill bit manufacturers, we can offer sorts of hybrid drill bit for sale, anything you need, please leave us a message.
