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Introduction of new bit design
10.07.2012

On two wells of Northen-Ostankinsk field at drilling Paleozoic deposits was used BIT 142.9 B 613 YH.30 Sp. New design of bit allowed solve problem connected with plugging flushing holes during pumping colmatant packs and decrease well construction time by means of absence of necessity of additional roud trip operations for bit cleaning (response of Strezhevoy branch of SGK-Burenie, LLC).


BIT 142.9 B 613 YH.30 Sp
with special flushing system for colmatant pumping


Technical specifications

Outside diameter, mm

142.9

Cutter size, mm

13

Total quantity of cutters*, pcs
- face cutters*, pcs.
- gauge cutters*, pcs

28
20
8

Quantity of blades

6

Quantity of holes, psc / mm

3 / 30

Connecting thread

3 ½ Reg

Height*, mm

285

Height without thread*, mm

200

Weigh, kg

18

* Dimensions of bit can slightly differ. «BURINTEKH», Ltd bits are permanently revised and renewed. Specification can be changed without notice.


Recommended drilling practice

Rotating speed, rpm

60 … 260

Weight on bit, t

2 10

Flow rate, l/s

8 20

Drive type

Rotor, PDM

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