Diamond drill bit use process matters needing attention
- Author:bourne
- Source:Boreway machinery
- Release on:2015-09-17
Diamond bit drilling preparation
1, check the existence of a diamond bit has
the bit body is damaged, lost tooth, etc., determine the bottom hole cleaning,
without falling objects.
2, careful handling of diamond drill bit, diamond bit
is placed on the rubber mat or wood. Prohibit the diamond bit placed directly on
the plate.
3, check whether there is diamond bit cutting teeth injury, whether
there is foreign body inside the diamond bit, nozzle hole type O sealing ring,
according to the need to install the nozzle.
Buckle on the diamond bit
1,
clean the diamond bit button male or female and daub oil thread.
2, the shackle
card on the diamond drill bit, drill string down to that of the male or female
contact button clasp.
3, the diamond bit and the shackle In wheel bushing, then
in accordance with the recommended screw on tighten screw torque values.
Drill down
1, the lower the diamond bit slower, through rotary blowout
preventer, casing hanger slowly, especially in order to protect the good cutter.
2, pay attention to the last time there was a tight hole,
drill hole encountered in the process of reducing and dog leg should make bit
slowly by.
3, about 1 root from bottom hole single begin with drilling rate of
50 ~ 60 RPM rotation and flush bottom hole pump driving a rated capacity. 4,
observe the heavy table and torque to make diamond bit smooth touch bottom.
Diamond drill bit reaming
1, do not recommend the use of diamond bit hole
reaming.
2, such as cross table must be conducted, should with the rated
capacity, slow, low torque reaming.
The modelling of diamond bit
1, keep the
rated capacity, lower the diamond core drill bit and bottom hole.
2, slow drilling at least
1 m was used to establish model of bottom hole.
3, to kn 10 each drill press to
increase to normal drilling optimal value, it is forbidden to pressure too hard,
cause early damage of diamond bit.
4, maintain a constant drilling pressure,
adjust the drilling rate in order to get the best combination of drilling
parameters.
