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  Test LebGOK (Russia)

Comparative tests of 30% of UBS-bit in September, 2008 at LebGOKe showed good hardening and cementation shells rolling cutters, both experienced and serial bits to upgrade them by working with the PTA effect, which led to a substantial increase in drilling performance. Therefore, after being subjected to the compared pairs missing "Plasticine" feeble effort corps rolling cutters, as was found in the test 30% of UBS-bit at the Petrovsky Career Central GOK, in December 2009.

Data for the comparative testing of prototypes modernization rock bits 244.5 OK-PRT SH2.33UN1-UM-UBS1 (version 1,0% UBS), manufactured under U.S. patent number 7195086 and serial bits 244,5 OK-PRT SH2.33 UN - 1M, construction Gormash, have completed the timing of when developing a career Lebedinsky GOK compared parameters (pair)
Parameters being compared (pair)
Drilling Mode
Number of drilling machineNumber number of compared pairs of bits
_________________
Number roadmap
Tunneling resistance on the bit (m)Total resistance hronomentrazhnaya bit (hour / min)Speed drill bit
(m / h) / (m / min)
Average drilling speed hronometrazhnaya 2 nd bar
(m / min)
modern.serially.modern.serially.modern.serially.modern.serially.modern.serially.
II
Pushed. mode
88
------
-67 - 75 м
130832
---------
1028
130835
---------
1029
10597.510.55
---------
633
14.7
---------
882
9.95
---------
0.166
6.63
---------
0.11
0.1610.108
Percentage% of I pair107.6%100%71%100%150%100%149%100%
I
Recom. mode
57
---------
-60 - 75 м
130837
---------
1006
130836
---------
1007
1629218.58
---------
1115
14.1
---------
846
8.71
---------
0.145
6.52
---------
0.108
0.1570.1315
Percentage% of II pair176%100%131%100%134%100%120%100%
III
Recom. mode
88
---------
-60 - 75 м
130834
---------
1027
130833
---------
1026
18798.516.06
---------
964
14.1
---------
848
11.64
---------
0.194
6.98
---------
0.116
0.2160.118
Percentage% of pair III190%100%113%100%167%100%183%100%
The average value of indicators151.39615.5
---------
904
14.3
---------
858
10.1
---------
0.168
6.71
---------
0.111
0.1780.119
Average% for the three pairs157%100%105%100%150%100%149%100%
Saved 4 spike (80 g / bit)
 
ACT
to conduct comparative tests to karrere
Lebedinsky GOK
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Diagrams of comparative tests of rock bits with 30% of UBS in accordance with U.S. patent number 7,195,086 Lebedinsky GOK

Penetration in meters


Time Drilling


Drilling speed
 
Blue color - modernized bit with 30% of UBS
Pink - Serial bit «Gormash» to its modernization under the UBS
The first pair had worked at not recommended modes of drilling, ie the forced mode of drilling, and therefore found a slight increase in penetration (+7.6%), increase drilling speed by 50% and reducing the time persistence bit for -29%
Figures show the average excess of the speed of drilling at 50.5%, while drilling at 22.5% and penetration (m) by 83% for the second and third of the compared pairs of bits that have been worked out with full timing and recommended low-return regimes drilling.

TESTS ON LEBEDINSKI GOK, RUSSIAN FEDERATION

THE NEW DRILL WITH DIAMETER 244.5 mm according to international patent USA 7195086 "Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction".

Due to overbreak it is obvious, the fraction size of slime is bigger that the fraction size when using conventional bits. Size of fraction slime of the new bit can be mathematically calculated and optimized according to a certain application.

Factions sludge demonstrate overbreak, ie enlargement of drill cuttings of rock drilling rolling cutters UBS..
Dispersed component of the sludge pilot bits twice (20.2% vs. 41.75%) compared with the increased proportion of large-scale component of the sludge, which can grow from 44% to 88%

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Comparative tests of 30% of UBS-bit in September, 2008 at LebGOKe showed good hardening and cementation shells rolling cutters, both experienced and serial bits to upgrade them by working with the PTA effect, which led to a substantial increase in drilling performance. Therefore, after being subjected to the compared pairs missing "Plasticine" feeble effort corps rolling cutters, as was found in the test 30% of UBS-bit at the Petrovsky Career Central GOK, in December 2009.
 
  
     All item of section "IMPLANTATION"
THEORY OF ROLLER BIT AND ITS USE IN U.S. PATENT NUMBER 7195086
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