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FREQUENTLY ASKED QUESTIONS

What Is The Recommened Parameters And Applicable Formation Reference For Guiding Drilling?

YINHAI—YHAYINHAI-YHA SERIES RUBBER ROLLER SEALED BEARING TRICONE BITSRECOMMENED PARAMETERS AND APPLICABLE FORMATION

NO. IADC recommend parameters application formation
WOBKN/mm RPMr/min
1 114、115 0.3~0.75 180~60 Extremely soft formation with low compressive strength and high drillability,such as clay,mudstone,cretaceous
2 124、125 0.3~0.85 180~60 soft formation with low compressive strength and high drillability,such as mudstone,gypsum,salinastone,soft shale and soft limestone
3 134、135 0.3~0.95 150~60 Soft to mid-soft formation with low compressive strength and high drillability,such as mid-soft shale,anhydrite,mid-soft limestone,mid-soft sandstone and soft formation with hard interlayer
4 214、215 0.35~0.95 150~60 Medium formation with high compressive strength,such as mid-soft shale,anhydrite,mid-soft limestone,mid-soft sandstone and soft formation with hard interlayer
5 244 0.35~0.95 150~50 Mid-hard formation with high compressive strength,such as abrasiveness shale,limestone,sandstone,dolomite and anhydrite,marble
6 324 0.4~1.0 120~50 Medium abrasiveness formation,such as abrasiveness shale,limestone,dolomite and anhydrite,marble
7 515、525 0.35~0.9 180~60 Soft formation with low compressive strength,such as mudstone,gypsum,salinastone,soft shale,soft limestone
8 535、545 0.35~1.0 150~60 Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and medium formation with harder abrasiveness interbeds

Note :The upper limits of WOB and RPM in above table should not be used simultaneously.
YINHAI—YHAYINHAI-YHA SERISES RUBBER JOURNAL SEALED BEARING TRICONE BITS RECOMMENED PARAMETERS AND APPLICABLE FORMATION

NO. IADC recommend parameters formation
WOBKN/mm RPMr/min
1 116、117 0.35~0.8 150~80 Extremly soft formation with low compressive strength and high drillability,such clay,mudstone,cretaceous
2 126、127 0.35~0.9 150~70 Soft formation with low compressive strength and high drillability,such as mudstone,gypsum,salinastone,soft shale,soft limestone
3 136、137 0.35~1.0 120~60 Soft to mid-soft formation with low compressive strength and high drillability,such mid-soft shale,anhydrite,mid-soft limestone,mid-soft sandstone and soft formation with hard interbeds
4 216、217 0.4~1.0 100~60 Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and soft formation with hard interbeds
5 246、247 0.4~1.0 80~50 Mid-hard formation with high compressive strength,such as hard shale,limestone,sandstone and dolomite
6 417、437、447 0.35~0.9 150~70 Extremely soft formation with low compressive strength and high drillability,such as clay,mudstone,cretaceous,gypsum,salinastone,soft shale and soft limestone
7 517、527 0.35~1.0 140~60 soft formation with low compressive strength ,such as mudstone,gypsum,salinastone,soft shale and soft limestone
8 537、547 0.45~1.0 120~50 Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and medium formation with harder abrasiveness interbeds
9 617、627 0.45~1.1 90~50 Mid-hard formation with high compressive strength,such as hard shale,limestone,sandstone,and dolomite
10 637 0.5~1.2 80~40 Hard formation with high compressive strength,such as sandstone,limestone,dolomite and anhydrite,marble

Note :The upper limits of WOB and RPM in above table should not be used simultaneously.
YINHAI-JYINHAI-J SERISES METAL SEALED BEARING TRICONE BITSRECOMMENED PARAMETERS AND APPLICABLE FORMATION

NO. IADC recommend parameters formation
WOBKN/mm RPMr/min
1 116、117 0.35~0.8 280~80 Extremely soft formation with low compressive strength and high drillability,such as clay,mudstone,cretaceous
2 126、127 0.35~0.9 240~80 Soft formation with low compressive strength and high drillability,such as mudstone,gypsum,salinastone,soft shale,and soft limestone
3 136、137 0.35~1.0 240~60 Soft to mid-soft formation with low compressive strength and high drillability,such mid-soft shale,anhydrite,mid-soft limestone,mid-soft sandstone and soft formation with hard interbeds
4 417、437、447 0.35~0.9 240~70 Extremely soft formation with low compressive strength and high drillability,such as clay,mudstone,cretaceous,gypsum,salinastone,soft shale and soft limestone
5 517、527 0.35~1.0 220~60 soft formation with low compressive strength ,such as mudstone,gypsum,salinastone,soft shale and soft limestone
6 537、547 0.45~1.0 220~50 Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and medium formation with harder abrasiveness interbeds
7 617、627 0.45~1.1 200~50 Mid-hard formation with high compressive strength,such as hard shale,limestone,sandstone,and dolomite
8 637 0.5~1.1 180~40 Hard formation with high compressive strength,such as sandstone,limestone,dolomite and anhydrite,marble

Note :The upper limits of WOB and RPM in above table should not be used simultaneously.

Could you advise us that the package types,sizes, volume and weight for loading and shipping?
(TCI BITS MT BITS PACKAGING WOODEN BOX REFERENCE)
(Sizes) (L*W*H CM) Wooden box weight) TCI Net Weight KG
4 3/4 16*14*25CM=0.0056 1 10 Pallet weight 13KG
5 1/2 16.5*15.3*24CM=0.0060588 14
5 7/8 19*17*34CM=0.010982 1.9 16
6 19*17*34CM=0.010982 1.9 16
6 1/8 20*17*35CM=0.0119 1.9 18 18
6 1/2 20*17*35CM=0.0119 1.9 19 18
7 17
7 1/2 24*21*41CM=0.020664 2.8 31 24.7
7 7/8 25*22*41CM=0.02255 2.8 31.5
8 1/2 27*23.5*41CM=0.0260145 3 39 35
8 3/4 270*235*410=0.0260145 4 40 38
9 1/2 30*27*47CM=0.038070 4 52 52
9 5/8 30*27*47CM=0.038070 4 61
9 7/8 30*27*47CM=0.038070 4 61 Note:steel tooth 9 7/8 Height 38.5CM,
Customization box height +3CM
10 5/8 320*300*500=0.048 5 78 Note:10 5/8 height 39CM,
Customization box height +3CM
11 3/4 35.5*32*54CM=0.061344 7 92
12 1/4 37*33.5*54CM=0.066933 7.13 98 90
13 7/8 41*37*59CM=0.089503 8.73 107 100
14 3/8 440*400*600=0.1056 12 174 146
15 44*40*60CM=0.1056 12 151 170
15 1/2 45.5*42.5*60=0.116025 14 200
16 470*435*660=0.134937 12.8 235
17 51*57*68CM=0.197676 17.3 250 205
19 550*510*680=0.19074 20 280
20 58*55*68CM=0.21692 259 540*560*810=0.245
22 590*610*800=0.288 416 590*610*800=0.288
23 920*720*720
24 670*640*850=0.364 488 670*640*850=0.364
26 930*760*760=0.537 750 553 Steel tooth wooden box
28

Wooden box calculation reference:drill bits L+60mm,W+30mm,H+90mm

Drill bits Carbon box
Sizes L*W*H CM Weight
8 1/2 245*240*400 0.9
9 1/2 290*270*435 1.1
12 1/4 330*320*470 1.6
What is Reference table of rock type, hardness, grade and abrasiveness?
Rock Type Rock
hardness
Rock
Grade
mudstone Soft 1
soft shale
tuff
gyp
sandstone Soft 2
loose sandstone
shale
sale frozen soil Mid-Soft 3
ice
medium hard limestone
soft sandstone
sandy shale
clay slate Mid-Soft 4
sandy limestone
soft schist
mediun hard sandstone Mid-Hard 5
silstone
sedimentary deposit
limestone
hard shale
medium hard  limestone Mid-Hard 6
hard limestone
serpentine rock
schist Mid-Hard 7
dolomite  limestone
hard siliceous rock
andesite
hard  schist     Mid-Hard 8
mica  schist
marble black granite
dolostones
diabase
pegmatite Hard 9
hematite rock
magnetite
metamorphic schists Hard 10
gneiss
granite
leptite
basalt diorite
gabbro Very Hard 11
porphyry
rhyolite
trachytic
conglomerate
lron suinite extremly Hard 12
hard sandstone
quartzite
pyrite
banded hematite
silicolite
Could you customize the packaging for clients?

Yes, we can accept that, we can label the trademark and make the special packages according to the customer’s special requirement. Therefore ,we need the design paper of the packaging from our clients,including brand, marks,labels, volume,sizes,box materials etc.