API 7-1 Spiral, Non-magnetic Drill Collar for Sale, Tool Joint, Crossover

API 7-1 Spiral, Non-magnetic Drill Collar for Sale, Tool Joint, Crossover

Drill collar is at the end of the drill stem, it is the important part of the drill tools

Description

API 7-1 Spiral, Non-magnetic Drill Collar for Sale, Tool Joint, Crossover

Drill collar

Description:

Drill collars are heavy, stiff steel tubulars. They are used at the bottom of a BHA to provide weight on bit and rigidity.The primary function of the drill collars is to provide sufficient WOB (Weight on bit). The weight of the collars also ensures that the drill pipe is kept in tension to prevent buckling.

Standard: API 7-1, GOST, NS-1

Material: AISI 4145H, AISI 4145 H MOD, Non-mag material

Size:2-7”~11”

Drill collar production flow:

 1.  Raw material inspection

 2.  Quenching and tempering

 3.  Properties inspection

 4.  Straightening

 5.  Trepanning

 6.  NDT

 7.  O.D.Turning

 8.  Threading and cold working of thread roots

 9.  Spiral grooves(Upon request)

 10. Thread Phosphorization

 11. Surface treatment

 12. Packing

Technical Paramete:

Drill collar


Products Range

2-7/8”~11



Material

AISII   4145HM, Non-Mag


Type   of end finish

Slick,   spiral




Drill   collar No.


OD


Bore Dia


B.S.R


L, ft ±6in

Tensile   strength

Impact   Value


Hardness




Y.S.



T.S.



Elongation



D   Inch

(mm)


d   Inch

(mm)


Round   No.


Ft

Impact   value


Brinel


NC23-31

3-1/8

(79.4)

1-1/4

(31.8)

2.57:1

30













Min.110000psi

(≥758Mpa)













Min.140000psi

(≥965Mpa)













Min.13%













Min.59ft.lb

(≥80j)













285~341


NC26-35

(2-3/8   IF)

3-12

(88.9)

1-1/2

(38.1)

2.42:1

30


NC31-41

(2-7/8   IF)

4-1/4

(104.8)

2(50.8)

2.43:1

30/31


NC35-47

4-3/4

(120.7)

2(50.8)

2.58:1

30/31


NC38-50

(3-1/2   IF)

5(127.0)

2-1/4

(57.2)

2.38:1

30/31


NC44-60

6(152.4)

2-1/4

(57.2)

2.49:1

30/31


NC44-60

6(152.4)

2-13/16

(71.4)

2.84:1

30/31


NC44-62

6-1/4

(158.8)

2-1/4

(57.2)

2.91:1

30/31


NC46-62

(4   IF)

6-1/4

(158.8)

2-13/16

(71.4)

2.63:1

30/31


NC46-65

(4 IF)

6-1/2

(165.1)

2-1/4

(57.2)

2.76:1

30/31


NC46-65

(4   IF)

6-1/2

(165.1)

2-13/16

(71.4)

3.05:1

30/31


NC46-67

(4   IF)

6-3/4

(171.5)

2-1/4

(57.2)

3.18:1

30/31


NC50-67

(4-1/2   IF)

6-3/4

(171.5)

2-13/16

(71.4)

2.37:1

30/31


NC50-70

(4-1/2   IF)

7(177.8)

2-1/4

(57.2)

2.54:1

30/31











Min.100000psi

(≥758Mpa)











Min.135000psi

(≥965Mpa)











Min.13%











Min.59ft.lb

(≥80j)











285~341


NC50-70

(4-1/2   IF)

7(177.8)

2-13/16

(71.4)

2.73:1

30/31


NC50-72

(4-1/2   IF)

7-1/4

(184.2)

2-13/16

(71.4)

3.12:1

30/31


NC56-77

7-3/4

(196.9)

2-13/16

(71.4)

2.70:1

30/31


NC56-80

8(203.2)

2-13/16

(71.4)

3.02:1

30/31


6-5/8

REG

8-1/4

(209.6)

2-13/16

(71.4)

2.93:1

30/31


NC61-90

9(228.6)

2-13/16

(71.4)

3.17:1

30/31


7-5/8

REG

9-1/2

(241.3)

3(76.2)

2.81:1

30/31


NC70-97

9-3/4

(247.7)

3(76.2)

2.57:1

30/31


NC70-100

10(254.0)

3(76.2)

2.81:1

30/31


8-5/8

REG

11(279.4)

3(76.2)

2.84:1

30/31


 

FYPE Rigid Machinery is one of the leading China manufacturers and suppliers in oil and gas industry. Our company now brings you high quality and competitive price api 7-1 spiral, non-magnetic drill collar for sale, tool joint, crossover for sale, which is widely used in oilfield. And quick delivery is also offered, please be free to contact our factory.

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