Tigerrig MINI-MD Series Roller Cone Bit For Silm Hole Drilling Applications
Production Description:
In addition to the features of MD motor bit, Mini MD slim hole bit is also designed with special bearing & seal structure and lubrication system. Mini MD bit's cutter material and cutting structure are reasonably matched with rock properties of the formation and this eliminated the specific problems such as low drilling efficiency and cutter breakage and loss, etc. Mini MD slim hole bit has structure features of metal face sealed and enhanced head O.D. protection, so that the bit is suitable for drilling slim hole and ultra-deep well drilling applications.
1.Mini MD slim hole bit is the ideal choice for drilling slim hole sections in deep and ultra-deep well drilling applications.
2.The size range of Mini MD series bit is 5 3/4 - 6 1/2 inch and its IADC code is 437 - 647.
Features:
1.High reliability and long working life
Bushing bearing with metal face seal
The series bit adopts advanced bushing bearing pair and reliable metal face seals to enhance
reliability of the bit.
New type of lubrication system
Precisely designed and processed lubrication system and the use of new type of synthetic grease can improve balancing speed of the pressures inside and outside of the bearing package and achieve better protection of the bearing and seal system of the bit
2.Improve bit stability, prevent bit diameter shrinkage and extend the bit's working life
Inclined double-stable head O.D.
Improved stability of small size head O.D. and reduced bit vibration at the bottom hole are achieved by using specially designed inclined double-stable head body. Hydraulic system of the bit is also optioned on the basis of the special head O.D. design and as a result, bottom flow field under the condition of insufficient hydraulic power in lower section in deep well is largely improved, removal of drilling cuttings is also improved and wear of the bit and other drilling tools by drilling cuttings is reduced and therefore, ROP is further improved.
(Optional features: D, H, X, Y）
Specifications
Bit Size
Bit type
in
mm
5 3/4
146.1
MD437、MD517、MD537、MD547、MD617、MD637
5 7/8
149.2
MD437、MD517、 MD537、MD547、MD617、MD637、MD647
6
152.4
6 1/8
155.6
6 1/4
158.8
6 1/2
165.1