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Help CenterWell Bore Clean Tools Junk Sub For Oil Well Drilling Fishing Tools
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JUNK SUBS
Junk sub is mainly used for fishing of shivers and fallen objects such as carbide tooth, drill bit and bearing which can not be carried out of hole by conventional fluid circulation, etc. It possesses important functions to keep hole cleaning, increase bit service life, reduce and prevent drill bit from unexpected damage. The tools are available with all sizes and super performance.
Technical Specifications and parameters
Type |
Hole Size |
API Thread |
ID (mm) |
OD (mm) |
JS-94 |
108-117.5 |
2 3/8" REG |
19 |
94 |
JS-102 |
117.5-124 |
2 7/8" REG |
32 |
102 |
JS-114 |
130-149 |
3 1/2" REG |
38 |
114 |
JS-127 |
152.4-162 |
3 1/2" REG |
38 |
127 |
JS-140 |
165-190.5 |
3 1/2" REG |
38 |
140 |
JS-168 |
190.5-216 |
4 1/2" REG |
57 |
168 |
JS-178 |
219-244.5 |
4 1/2" REG |
57 |
178 |
JS-190 |
229-273 |
4 1/2" REG |
57 |
190 |
JS-197 |
235-279.5 |
4 1/2" IF |
70 |
197 |
JS-219 |
244-295 |
6 5/8" REG |
76 |
219 |
JS-229 |
254-305 |
6 5/8" REG |
76 |
229 |
JS-245 |
292-330 |
6 5/8" REG |
76 |
245 |
JS-280 |
330-375 |
7 5/8" REG |
76 |
280 |
JS-311 |
327-375 |
7 5/8" REG |
76 |
311 |
JS-327 |
375-444.5 |
7 5/8" REG |
76 |
327 |
JS-340 |
386-456 |
7 5/8" REG |
76 |
340 |
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