Sealed bearing three cone steel teeth tricone rock drill bit

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  • Place of Origin:China
Sealed bearing three cone steel teeth tricone rock drill bit

Why tricone drill bit are most widely used

Due to impact, crushing and shearing rock breaking when roller cone rotates, the contact area between cone and bottom hole is small, the specific pressure is high, the working torque is small, and the working blade has a large total length and can be suitable for rock of various kinds.

what is the working principle of tricone drill bit

Tricone bits rely on the impact of the cone on the formation, crushing and sliding shear to crush the rock.

SPECIFICATION:

Table of classification of formation hardness and bit selection
Roller cone bit IADC code Formation description Rock type compresssive strength (Mpa) ROP m/h Recommended type of diamond bit
111/124 Very soft:sticky soft formation with low compressive strength Clay Siltstone

Sandstone

<25 >20 S/M1952 1942
116/137 Soft:soft formation with low compressive strength and high drillability Clay rock

Mart

Lignite

Sandstone

25~50 10~20 S/M1642 1652 1952

S1963 ,M1642

417 / 527 Medium soft: soft to medium formation with low compressive strength and streak Clay rock Maril Lignite

Sandstone

Siltstone

Anhydrite Tuff

50~75 5~15 S 1963 ,1652 1362

M 1953 1662 1375

517/537 Medium: medium to hard formation with high compressive strength and thin abrassive streak Mudstone

Dark rock

Shale

75~100 2~6 S1652 1362

M 1662 1363 1375

537/617 Medium : hard and dense formation with high compressive strength and medium abrasiveness Dark rock

Hard shale

Anhydrite

Sandstone

Dolomite

100~200 1.5~3 M1673 1662

1653 1375


Dongying Lake Petroleum Technology Co., Ltd.

Tel: 0086-546-7080020 Country: China (Mainland)