PQ Natural Diamond Reaming Shells for Wireline Coring Drilling​




PQ Reaming shell products is a combination of synthetic diamond grit, thermally stable polycrystalline (TSP) synthetic diamond elements and tungsten-carbide wear pads. These materials are cast into a tough, abrasion resistant matrix body. Unlike some reaming shell designs that employ natural industrial diamond particles, PQreaming shells are set entirely with synthetic diamond materials that have known engineering properties. This feature makes the our PQ reaming shell well suited for use on drilling projects in which the potential for contamination by natural diamond crystals is considered objectionable.

Size of Reaming shell

Related Products:

W-Profile(Standard profile)
·General purpose design
·Suitable for mixed formations contain broken and competent zones
·Suitable for a board range of formations
·Height of crown:14mm,Customized








Face discharge Profile
·Design to minimize washing of core sample
·Suitable for broken/granular formations
·Height of crown:14mm,Customized


Turbo Profile
·High performance ”free cutting” bit
·High productivity
·Suitable for hard/competent formations
·Suitable for non-abrasive formations
Height of crown:14mm,Customized


Sand profile
Suitable for competent to extremly broken or clay,
clay/sand mixed formations
·Double tube applications
·To improve core recovery in soft/broken or loose zones
·Height of crown:14mm,Customized




Taper Profile
·Profile used in hole wedging(directional drilling)
Operations to ream wedged hole after pilot bit
· Height of crown:14mm,Customized


{3}Select suitable series from our three types
(1)Master Series(Full range hardness of stratum)
Manufactured one by one with care and precision,Master™ core bit are designed to our highest quality standards. They offer their best performance in very hard to extremely hard types, such as those comprised of basalt and felsic or volcanic rock and so on.


(2)Navigator Series(Soft -very hard hardness of stratum)
Navigator™is our highest cost performace and most popular series. This series provides the versatility you need for optimum drilling perforance in varying conditions, best performance in soft to very hard stratums

(3)Junior Series(Soft-medium hardness of stratum)
Attractive price with high cost performance, Junior™series provide good performance in soft to medium stratums