Product Details

Welcome visit hengji bit company

We have all size of tricone bits,PDC bits,core bits,steel tooth bits,insert tricone bits,single cone bits,hole opener,assemble tricone bit,etc. Suitable for soft to hard formations.

6 blades 8.5in 13mm PDC drill bit

size	8.5inch
API Pin	4 1/2inch
type	100%new
processing	melding
WOB	0.7-1.2kN/mm
RPM	70-40r/min
Applicable formation	very hard with high abrasiveness,such as quartzite,quaruzite sand,chert,basalt,granite,etc.
Payment terms	T/T,etc.
MOQ	1pcs
shiping	By sea,by air,by train,by DHL,etc.

The advantage:

Cutting structure

The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.

Gauge structure

Multiple gauge protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone ,tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

Bearing structure

High precision journal bearing with two thrust faces.Balls lock the cone.The leg bearing can get larger by arranging the rollers in groove of the cone hole,so it can receive mor WOB ,and suitable for high RPM.Thrust faces hardfaced with wear resistant alloy.Abrasion resistance and seizure of the bearing are improved.

Seal and Lubrication

Premium HNBR O-ring,optimal seal compression and curved seal structure can enhance seal performance. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

Product application

It can receive higher WOB and faster rotary speed than conventional roller bearing bits.It is suitable for high RPM applications.

The process:

The cataloge

TCI tricone drill bit
IADC	WOB(kN/mm)	RPM(r/min)	Applicable formation	Size(inch)
417/427	0.3-0.9	150-70	very Soft formation with low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc.	3 1/2	4 5/8	4 3/4
437/447	0.35-0.9	150-70	very Soft formation with low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc.	5 1/2	5 7/8	6
515/525	0.35-0.9	180-60	very Soft formation with low compressive strength and high drillability,such as mudstone,salt,soft limestone, sands,etc.	6 1/4	6 1/2	6 3/4
517/527	0.35-1.0	140-50	Soft formation with low compressive strength and high drillability,such as mudstone,salt,soft limestone,sands,etc	7 1/2	7 7/8	8 1/4
535/545	0.35-1.0	150-60	medium soft with harder formation, more abrasive streaks,such as hard shale,mudstone,soft limestone,etc.	8 3/8	8 1/2	8 3/4
537/547	0.4-1.0	120-40	medium hard with harder formation, more abrasive streaks,such as hard shale,mudstone,soft limestone,etc.	9 1/2	9 5/8	9 7/8
617/627	0.45-1.1	90-50	medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc.	10 5/8	11	11 5/8
637	0.5-1.2	80-40	hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc.	12 1/8	12 1/4	13 1/8
737	0.7-1.2	70-40	Hard with high abrasiveness such as hard limestone,dolomite,firm sands,etc	13 5/8	13 3/4	14 5/8
827/837	0.7-1.2	70-40	very hard with high abrasiveness,such as quartzite,quaruzite sand,chert,basalt,granite,etc.	14 3/4	15 1/2	16
827/837	0.7-1.2	70-40		17 1/2	20	26

Steel tooth tricone drill bit

IADC

WOB(kN/mm)

RPM(r/min)

Applicable formation

Size(inch)

114115

0.3-0.75

180-50

Soft formation with low compressive strength and high drillability,such as mudstone,clay,chalk,etc

4 5/8

4 3/4

5 3/4

116117

0.3-0.8

150-70

Soft formation with low compressive strength and high drillability,such as mudstone,clay,chalk,etc

5 7/8

6 1/4

124125

0.3-0.85

180-60

Soft formation with low compressive strength and high drillability,such as mudstone,clay,salt,loose stands,soft limestone,etc

6 1/2

6 3/4

7 1/2

126127

0.3-0.9

150-60

Soft formation with low compressive strength and high drillability,such as mudstone,clay,salt,loose stands,soft limestone,etc

7 7/8

8 3/8

8 1/2

131134135

0.35-0.95

150-50

Soft to medium formation with low compressive strength or soft with harder streaks,such as mudstone,shale,soft limestone ,sands,etc

8 3/4

9 1/2

9 5/8

136137

0.35-1.0

120-60

Soft to medium formation with low compressive strength or soft with harder streaks,such as mudstone,shale,soft limestone ,sands,etc

9 7/8

10 5/8

214215

0.4-0.95

150-60

medium hard formation with high compressive strength ,such as medium soft shale,anhydrite,medium soft limestone ,medium soft sandstone as well as thick and hard streaks,etc

11 5/8

12 1/4

216217

0.4-1.0

100-60

medium hard formation with low compressive strength ,such as medium soft shale,limestone and sandstone as well as thick and hard streaks,etc

13 5/8

13 3/4

14 3/4

244

0.35-0.95

150-50

medium hard formation with high compressive strength ,such as hard shale,sands ,limestone,etc

15 1/2

246247

0.4-1.0

80-50

medium hard formation with high compressive strength ,such as hard shale,sands ,limestone,etc

17 1/2

324325

0.4-1.0

120-50

hard formation with high strength and abrasiveness such as hard limestone,hard sands,dolomite,hard shale,etc

2, Application for bit

In Petroleum & Gas ,Water well ,Mining and Tectonic Industries ,Oil field, Construction, Geothermal, Directional Boring, and Underground Foundation work.

2,Diamond drilling bit

diamond pdc core bits for coal mining are the new bits with the characteristics of high wear resistance, high impact resistance,

high penetration rate. After using on site, it is proved that PDC bits have advantages in high speed,deep footage, long life,

steady work, few accident, good well bore quality when sneaking in hard or soft foundation. Company independently developed

the PDC drill bits have reached more than 30 varieties of products to meet the needs of different strata.

PDC bits characteristics:

1. Uses outline optimization design, adapts in different strata.

2. Short parabolic crown, cutting force balance design structure, spiral knife wing, balance the bit force, improve

impact resistance.

3. Uses the dynamic flow field technique of simulation, optimizes the drill bit water power design, strengthens the drill bit clean, cooling capacity and prevents the drill bit balling.

4. Using high performance compound piece combination , enhances the bit life.

packaging&Shipping:

By sea,By air ,By train,By truck,and so on

1). By Express like TNT, DHL, UPS, Fedex, Aramex, suitable for small bits total weight less than 45kg

2). By Air, suitable for urgent orders, total weight exceed 45kg

3). By ship, suitable for large quantity, will take more shipping time

The certification:

Our Services

How to choose the type:

shallow well, mainly consider the drilling speed and preventing the mud pack.

deep well,mainly consider the bit footage

When out of the well the outer cutter is broken heavily, should be selected with gage bit

In the ease of deviated section should use small and short cutter bit

In the selection of insert button bit, should use the wedge-shaped cutter

Diamond limestone, appropriate uses double bevel gear, projectile shape tooth bit

Shale more or drilling fluid density is larger, should be selected with a larger amount of slip drill

The formation of limestone, sandstone, should choose smaller slip bit

In drilling hard and high abrasive stratum, appropriate uses ball tooth, double cone tooth head.

FAQ

1. How to order the products?
Answer:
Send the inquiry with detail item description or with Model number.
If there is no packing demand we take it as sea-way packing.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding. http://hengjibit.en.china.cn/

2. About delivery time?
Answer :
The delivery time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.

3.Can I expect a quality products?
Answer :
Yes. All our activities are accredited to ISO 9001:2008 , both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.

4.Trade Terms:

payment:T/T. 30%deposits,70% before delivering.

If you have any questions ,pl tell me ,it is my pleasure to reply you.