Taper Mills

TAPER MILLS

Taper mills are generally used to eliminate restrictions or to mill through a collapsed casing. They can also be used to shave off cement or other corroded parts in casings.

OTI offers two types of Taper Mills – ST (short taper with blunt nose design) and LT (long taper with pointed nose design). Customer has the option of customizing the type of blades required. The options available are straight or spiraled blades.

SPECIFICATIONS

Dressed Dia (s)

Top Pin
Connection - API Reg.

Overall Length

Fishing Neck

Approx. Weight (Ibs.)

ST

LT

Length

Dia (s)

ST

LT

3-1/4 – 3-7/8

2-3/8

30

34

10

3

60

80

4 – 4-3/8

2-3/8

30

34

10

3-1/8

70

90

4-1/2 – 5-3/8

2-7/8

31

38

10

3-3/4

75

106

 5-1/2 – 5-5/8

3-1/2

32

42

13

4-1/4

115

155

5-3/4 – 6-3/8

3-1/2

32

44

13

4-3/4

120

160

6-1/2 – 7-3/8

3-1/2

34

46

13

4-3/4

130

170

7-1/2 – 7-7/8

4-1/2

36

54

13

5-3/4

185

250

8-3/8 – 9-1/4

4-1/2

36

54

14

5-3/4

220

280

9-3/8 – 9-7/8

4-1/2 / 6-5/8

36

54

14

5-3/4 / 7-3/4

280

345

10-3/8 – 11

6-5/8

38

57

14

7-3/4

355

415

11-1/2 – 12-1/4

6-5/8

40

60

14

7-3/4

390

455

14-3/4 – 15

6-5/8

60

70

18

7-3/4

460

525

17 – 17-1/2

6-5/8

60

70

18

7-3/4

530

595

20 – 26

6-5/8 / 7-5/8

66

76

18

7-3/4 / 9-1/2

1125

1250

Note:
1. All dimensions are given in inches. Unless otherwise stated.
2. All weights are approximate.


Ordering Instructions:

When ordering or requesting quotations on junk mills, please specify:

1. Mill diameter.
2. Top connection
3. Mill type – ST or LT.
4. Spiraled or Straight Blades.