Oilfield Drilling Kellys from China

Place of Origin: Shaanxi,China (Mainland)
Certification: API
Steel Grade: G105, S135
Supply Ability: 1000 sets per month
Use: Well drilling
Material: AISI4145H
Processing Type: Forging
Coating: Black painting / Vanish painting / 1PE/ 3PE/ FBE coated
Marking: According to standard or according the client's requirement
Packing: In bundles or Loose
Shipping: 15days for stock and 30-60days for new products

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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:10.0 USDProduction Capacity:800 set per month
Trade Term:FOB,CFR,CIF,DDP,DAP,CIP,CPT,FCA,EXW,DDUPacking:EXPORT PACKAGES
Payment Terms:L/C, D/P, D/A, T/TDelivery Date:30 days after received...
Min. Order:1 Piece/Pieces
Means of Transport:EXPRESS, Ocean, Air, Land

Oilfield Drilling Kellys from China 


Square Kelly for oilfield drilling equipments

4145H mod Downhole Drilling Tools Drill Collars

Itis made from AISI 4145H alloy steel acc. to API Spec.7 and SY/T6509.It is formed by hot forged and fully heattreated by intermediate frequency induction heat treatment or 20m horizontal optical resistance furnace to gain high physical properties in length. All threads are phosphate, copperized or cold worked.


Kelly Size

Length of Drive Section
m

Length Overall
m

Drive Section

Standard LD

Optional LD

Standard L

Optional L

Across Flats 

DFL

Across Corners 

EC

Across Corners 

DCC

CC

Radius 

RCC

Min. Wall 

ECC. Boret

76.2

(3)

11280


12190


76.2

85.7

85.73

6.4

42.9

12.1

88.9

(3 1/2)

11280


12190


88.9

100.8

100.00

6.4

50.0

13.3

108.0

(4 1/4)

11280

15540

12190

16460

108.0

122.2

121.44

9.9

60.7

15.9

133.4

(5 1/4)

11280

15540

12190

16460

133.4

151.6

149.86

9.5

75.0

15.9

133.4

(5 1/4)

11280

15540

12190

16460

133.4

151.6

149.86

9.5

75.0

15.9

152.4

(6)

11280

15540

12190

16460

152.4

173.0

173.02

9.5

86.5

15.9

152.4

(6)

11280

15540

12190

16460

152.4

173.0

173.02

9.5

86.5

15.9

  

Kelly Size

Upper Box Connection

Lower Pin Connection

Inside
Diameter

size and style LH

Outside Diameter

Bevel Diameter

Size and Style

Outside
Diameter
DLR

Length
LL

Bevel Diameter
DF

Standard

Optional

Standard
Dc

Optional
DU

Length 

LU

Standard 

DF

Optional 

DF

76.2

(3)

(6-5/8)REG

(4-1/2)REG

196.9

146.1

406.4

186.1

134.5

NC26
(2 3/8IF)

85.7

508

82.9

31.8

88.9

(3 1/2)

(6-5/8)REG

(4-1/2)REG

196.9

146.1

406.4

186.1

134.5

NC31
(2 7/8IF)

104.8

508

100.4

44.5

108.0

(4 1/4)

(6-5/8)REG

(4-1/2)REG

196.9

146.1

406.4

186.1

134.5

NC38
(3 1/2IF)

120.7

508

116.3

57.2

133.4

(5 1/4)

(6-5/8)REG


196.9


406.4

186.1


NC46
(4IF)

158.8

508

145.3

71.4

133.4

(5 1/4)

(6-5/8)REG


196.9


406.4

186.1


NC50
(4 1/2IF)

161.9

508

154.0

71.4

152.4

(6)

(6-5/8)REG


196.9


406.4

186.1


5 1/2FH

177.8

508

170.7

82.6

152.4

(6)

(6-5/8)REG


196.9


406.4

186.1


NC56

177.8

508

171.1

82.6

 

Pictures


About us

We specialize in producing and selling API standard drill pipe from 2-3/8''OD to 5-1/2''''OD.with steel grade E75,X95,G105,S135.We can supply both NC,IF,FH connection type and special connection type as HT55.Mainly used in oil and gas exploration and development process of deep well,horizontal well and extended reach well.

Drill pipe is a portion of the overall drill string. The drill string consists of both drill pipe and the drill stem which is the tubular portion closest to the bit or downhole assembly. Drill pipe and drill stems can be differentiated in that the drill pipe is quite flexible and produced in longer segments whereas the drill stem is much more rigid and manufactured in shorter task specific segments.


More detailed photos as for your reference:

API 3-1/2Drill Pipe oilfield drilling pipe


API 3-1/2Drill Pipe oilfield drilling pipe

API 3-1/2Drill Pipe oilfield drilling pipe

API 3-1/2Drill Pipe oilfield drilling pipe



Drill Pipe Feature:

A. High precision in size and shape

B. Good low temperature toughness

C. Excellent comprehensive mechanical properties

D. High connection strength and sealability

E. Large inside diameter of tool joint

F. Hightorque resistance

G. High fatigue strength and long fatigue life

Internal Coating Feature:

A.High abrasion resistance and low friction factor

B. Good adhesion and flexility

C. High application temperature and pressure

D. High hardness and impact resistance

E. Good corrosion resistance

Hardbanding Feature:

A. Good balance between antiwear and friction-reduction

B. The wear rate is less than 6% of that of bare tool joint, which can prolong 3 times of the

    tool joint service life

C. Good property of friction-reduction, which can reduce the casing wear to the least, and its

    wear to casing is less than 11% of that of bare tool joint

D. Reduce the torque of drilling string

E. Good weldablity with little splash and good rewelding preformance

F. Friendly to environment

Our Production Line
API 5D 2-7/8Drill Pipe for oilfield





About delivery:

About Logo: KW, we can produce according to customer requirements.

About Quality: All the products with API, low price are not -API, cannot be exported.

About Warranty: Warranty period is 1 year after installation.

About Payment: 30% of the advance payments, delivery time, please pay 70%.

About Ttechnical Documents: I submit the following accompanying technical information in English,

A: Test Report in accordance with the appropriate API or national test standards outline
B. Commerial Invoice

C: Original copy of quality certificate

D: Packing List

E: The chemical element ,Mechanical properties.


About Service:

We believe in Customer delight, achieved by the supply of Quality Products & Services and Continual Improvement in our Manufacturing Processes for timely delivery at competitive prices. We work in a professional, competitive, and cost-effective manner consistent with the Customer requirement.



Any Inquiry or Advance will be highly appreciated! 





Category: Drill Pipe/HWDP/Drill Collar

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