Releasable Back-off Spear is a tool designed to catch and back off the stuck pipe-shaped fish like drill pipe, tubing, etc.It can release the caught fish at requirement and circulate drilling fluid.
Specification of Releasing Back-off Fishing Spear
|
Type
|
Outside
Diamensions
(mm)
|
I.D.
(mm)
|
Connection
|
Fishing
Range
(mm)
|
Type
|
Outside
Diamensions
(mm)
|
I.D.
(mm)
|
Connection
|
Fishing
Range
(mm)
|
|
DLM-T48
|
φ89×600
|
9
|
NC26
|
39.7-41.9
|
DLM-T127
|
φ140×850
|
35
|
4 1/2″REG
|
107.0-115.8
|
|
DLM-T48
|
φ95×600
|
9
|
2 7/8″REG
|
39.7-41.9
|
DLM-T140
|
φ160×850
|
40
|
NC50
|
117.7-127.7
|
|
DLM-T60
|
φ100×620
|
12
|
2 7/8″REG
|
49.7-51.9
|
DLM-T178
|
φ178×870
|
50
|
NC50
|
146.3-161.8
|
|
DLM-T73
|
φ105×680
|
20
|
NC31
|
61.5-77.9
|
DLM-T219
|
φ220×950
|
60
|
5 1/2″FH
|
195.1-203.1
|
|
DLM-T89
|
φ114×750
|
25
|
NC38
|
75.4-91.0
|
DLM-T245
|
φ250×1170
|
70
|
5 1/2″FH
|
216.8-228.8
|
|
DLM-T102
|
φ121×800
|
30
|
NC38
|
88.2-102.8
|
DLM-T273
|
φ280×1400
|
80
|
5 1/2″FH
|
247.9-258.8
|
|
DLM-T114
|
φ140×820
|
35
|
4 1/2″REG
|
99.8-102.8
|
DLM-T340
|
φ345×1650
|
100
|
6 5/8″REG
|
313.6-322.9
|