Junk sub is a practical and effective tool. During drilling operation, it can be used to recover the
heavier drilling cuttings or metal chips which are difficult to be lifted out of the borehole by
normal drilling fluid circulation.
the type and main parameter of Junk Sub
|
TYPE |
Suitable hole |
Max. O.D. |
I.D. |
Connection |
Overall length mm(in) |
||
|
Type S |
Type L |
Type EX |
|||||
|
LB94 S.L.EX. |
108－117.5 |
94(311/16) |
19( 3/4) |
23/8REG |
737(291/64) |
1 092(43) |
1 359(531/2) |
|
LB102S.L.EX. |
117.5－124 |
102(4) |
32(11/4) |
27/8REG |
749(291/2) |
1 118(44) |
1 327(521/4) |
|
LB114S.L.EX. |
130－149 |
114(41/2) |
38(11/2) |
31/2REG |
775(301/2) |
1 143(45) |
1 397(55) |
|
LB127S.L.EX. |
152.4－162 |
127(5) |
38(11/2) |
31/2REG |
775(301/2) |
1 143(45) |
1 397(55) |
|
LB140S.L.EX. |
165－190.5 |
140(51/2) |
38(11/2) |
31/2REG |
775(301/2) |
1 143(45) |
1 397(55) |
|
LB168S.L.EX. |
190.5－216 |
168(65/8) |
57(21/4) |
41/2REG |
800(311/2) |
1 168(46) |
1 422(56) |
|
LB178S.L.EX. |
219－244.5 |
178(7) |
57(21/4) |
41/2REG |
800(311/2) |
1 168(46) |
1 422(56) |
|
LB190S.L.EX. |
229－273 |
190(71/2) |
57(21/4) |
41/2REG |
838(33) |
1 168(46) |
1 422(56) |
|
LB197S.L.EX. |
235－279.5 |
197(73/4) |
70(23/4) |
51/2REG |
838(33) |
1 168(46) |
1 422(56) |
|
LB219S.L.EX. |
244.5－295 |
219(85/8) |
89(31/2) |
65/8REG |
838(33) |
1 219(48) |
1 473(58) |
|
LB229S.L.EX. |
254－305 |
229(9) |
70(23/4) |
65/8REG |
838(33) |
1 219(48) |
1 473(58) |
|
LB245S.L.EX. |
292－330 |
245(10) |
89(31/2) |
65/8REG |
838(33) |
1 219(48) |
1 473(58) |
|
LB280S.L.EX. |
327－375 |
280(11) |
89(31/2) |
75/8REG |
914(36) |
1 270(50) |
1 524(60) |
|
LB286S.L.EX. |
333－381 |
286(111/4) |
89(31/2) |
75/8REG |
914(36) |
1 270(50) |
1 524(60) |
|
LB304S.L.EX. |
352－421 |
304(12) |
89(31/2) |
65/8REG |
914(36) |
1 270(50) |
1 524(60) |
|
LB327S.L.EX. |
375－444.5 |
327(127/8) |
102(4) |
75/8REG |
914(36) |
1 270(50) |
1 524(60) |
|
LB340S.L.EX. |
386－456 |
340(133/8) |
102(4) |
75/8REG |
914(36) |
1 270(50) |
1 524(60) |
