Kingdream PDC bit
Kingdream PDC bit production line, equip with more than 200 sets of lathes,heat treatment machine, sandblasting machine, production and testing equipment, rich experienced welding engineer working on PDC bit industry for many years, can produce matrix body and steel body PDC bits from 3-7/8″to 22″, so we can ensure the final quality of PDC bit by control every procedure of process.
Technical predominance: The company has powerful technical strength and owns experienced experts and skilled operators that have involved in R&D, manufacture and marketing of diamond bit for many years. During the period from 1986 to 1997, the company had introduced advanced bit manufacturing technologies from abroad for three times. It innovates unceasingly while digesting the introduced technologies, and the company currently owns many advanced bit related technologies including CAD/CAM, CFD (Computational Fluid Dynamics) and logging data analysis & selection software, etc. The company also carries out diamond bit basic researches with R&D center of Kingdream Public Limited Company and other research institutes so that continuous development and technical leading position of the company is guaranteed.
Quality assurance: The company is licensed under ISO9001 and certified to API. Steady quality and excellent performance of the bits are assured by using sophisticated equipment such as 5-axis machining center, NC lathes, NC sintering furnace and integrated brazing-welding machine, etc. and strictly observing requirements of the quality system
Additional Features

A - vibration absorber
Enhancing the ability of thebit to drill through soft and hard interbeded formationsin order to protect PDC cutters.

D - double row cutters
Penetration ability and wear-resistance of the bit in mediumhard formation can beimproved.

G - Spiral gage protection
Bit is force-balanced that resulting better stability of the bit.

R - Back-reaming Making
the bit more suitable for various drilling processes to preventsticking.

S - spiral blade Cutterlayout
densities areincreased and adaptive abilities of the bit inhard formations are improved

T - special gage protection
Enhancing gage protection ability of the bit.
Table of classification of formation hardness and bit selection
| Roller cone bit IADC code | Formation description | Rock type | Compressivestrength(Mpa) | ROP m/h | lADC code of diamond bit | Recommended type of diamond bit |
|---|---|---|---|---|---|---|
| 111/124 | Very soft: sticky softformation with lowcompressive strength | Clay Siltstone Sandstone | <25 | >20 | M/S112~M/S223 | KS1952 KM1952 KS1942 KM/SD1952 KM1942 KM/SD1942 |
| 116/137 | Soft: soft formationwith low compressivestrength and highdrillability. | Clay rock Marl Lignite Sandstone | 25~50 | 10~20 | M/S222~M/S323 | KS1963 KM1952 KS1952 KM/SD1952 KS1652 KM1652 KS1642 KM/SD1652 KM1642 |
| 417/527 | Medium soft: soft tomedium formation withlow compressivestrength and streak. | Clay rock, Marl Lignite, Sandstone Siltstone, Anhydrite Tuff | 50~75 | 5~15 | M/S323~M/S433 | KS1963 KM1953 KS1652 KM/SD1953 KS1362 KM1662 KM/SD1653 KM1375 KM/SD1375 KM/SD1363 KM1363 |
| 517/537 | Medium: medium tohard formation withhigh compressivestrength and thinabrasive streak. | Mudstone Dark rock Shale | 75~100 | 2~6 | M322~M443 | KS1652 KM1662 KS1362 KM/SD1662 KM1375 KM/SD1375 KM1363 KM/SD1363 |
| 537/617 | Medium hard: hard anddense formation withhigh compressivestrength and mediumabrasiveness. | Dark rock Hard shale Anhydrite Sandstone Dolomite | 100~200 | 1.5~3 | M422~M444 | KSH1382 KMH1673 KMH1662 KMH1653 KMH1375 |
Kingdream PDC bit
KM series
Matrix body PDC bit for fast drilling applications
Main structure features:
- PDC cutters of different features are selected and bit profile design is optimized to suit different drilling applications in different formations to satisfy different requirements when drilling soft to medium hard formations without sulfureted hydrogen well section.
- Cutting structure is force balanced, non-symmetrical blade and the deep junk slots are designed to dramatically improve ROP of the bit.
- Matrix material of the bit adopts high quality steel and wear-resistance material with high performance is built-up welded on the surface of blades to prevent matrix material from eroding.
- Hydraulic system of the bit is optimized using dynamic flow pattern simulation technology to enhance cleaning and cooling effects of the bit to effectively prevent bit from balling.
- Machining precision and retention of cutters are ensured by using milling center with high performance five axes and high-speed milling technology.
Kingdream PDC bit
KS series
Steel body PDC bit
Main structure features:
- PDC cutters of different features are selected and bit profile design is optimized to suit different drilling applications in different fommations to satisfy different requirements when drilling soft to medium hard formations.
- Cutting structure is force balanced, non-symmetrical blade and wide gage are designed so that the bit drills more stable and resulting longer working life of the
bit. - Better wear resistance and higher strength of the bit are guaranteed in regard tomaterial and structure by using matrix body material with self-owned intellectual property rights and combining FEA analysis technology.
- Hydraulic system of the bit is optimized using dynamic flow pattem simulation technology to enhance cleaning and cooling effects of the bit to effectively prevent bit from balling.
- CNC sintering process uses full automatic control. Inside and outside temperature of the bit is monitored during all procedures to fully embody material properties as well as ensure uniformity and stability of product quality.
Kingdream PDC bit
KMD/KSD Series
Matrix/steel body PDC bits suitable for directional drilling
Main structure features:
- Shallow cone and short gage design make the bit having better steerability to satisfy any demand of directional drilling applications.
- Optimized profile design and denser cutter layout at shoulder area can guarantee higher side cutting ability of the bit.
- Inclined gage design to increase the bit’s stability and gage protection indirectional drilling applicatons.
- Enhanced gage design to improve the bit’s ability of gage protection.
- Optimized hydraulic design for increased cooling and cleaning effects of thebit in horizontal and directional sections and therefore,to prevent bit balling and improve ROP to the bit.
Kingdream PDC bit
KMH Series
High end matrix body PDC bit suitable for medium and medium hard formations
Main structure features:
- Specific to characteristics of hard formation and interbeded formation, bit profile is optimized and cutting depth of the bit is controlled to satisfy requirements of drilling medium to medium hard formations.
- Overall performance of PDC cutters is improved by using high performance PDC cutters of better wear resistance, better impact strength and better thermal stability.
- Unique cutter layout and specific force balance analysis plus other related technologies, etc. improved the bit’s working life and premature ring type wear of the bit is prevented.
- Optimized hydraulic design can improve the bit’s cooling effect and therefore, prevent PDC cutter failure caused by high temperature.
- Bit diameter shrinkage is effectively prevented by enhanced gage protection design.