cone drilling applications
It is because of these characteristics, cone tricone bit for soft to hard, from a variety of formations. Therefore, the cone used for drilling
Oil drilling, deep wells and large diameter drill works.
3 cone tricone bit works
cone tricone bit of movement in the bottom of the hole
For the same tricone bit of the distribution and arrangement of the teeth on the cone inconsistent bottom formed in the work is not the same shape,
And over time, and drilling technology measures changes. Therefore, the cone tricone bit at the bottom of the movement is a very complex
, And only in the theoretical analysis cone tricone bit at the bottom of the general law of motion. For convenience, make the following assumptions:
A flat rigid bottom, which do not eat into the rock cutters, the tricone bit is rigid; along the cone in contact with the bottom
Side bus, the pressure evenly distributed; tricone bit and dental crop rotation angular rotation.
tricone bit tricone bit revolution clockwise rotation about the axis, but also about the tricone bit cone axis of rotation, such rotation is called tricone bit
Revolution. tricone bit is a revolution speed dial or downhole drill spindle speed.
Rotation about the tricone bit roller cone axis, while the friction roller by the rock bottom, roller to tricone bit
Forward to do around the cone axis counterclockwise rotation, this rotation is called cone rotation.
If the sliding contact with the bus tricone bit and bottom of each point on the revolution speed and rotation speed are equal, the cone of pure rolling.
When tricone bit in contact with the bottom of each point on the bus revolution speed and rotation speed range, then the cone at the bottom is not pure rolling,
Tricone rock on the bottom of the well to produce relative movement, that slippage.
Longitudinal vibration cone at the bottom of rotation, alternating monodentate and bidentate contact with bottom, so tricone bit generated along its longitudinal axis
Reciprocating. The longitudinal direction of vibration perpendicular to the bottom plane, resulting in a cone of the dynamic pressure into effect.
Compound with the above four movements are generated simultaneously, resulting in the effect of downward movement of the tricone bit, i.e.
Drilling.