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Fishing Tools Lead Impression BlockImpression block is used for judging the depth of fish and shape of fish's top. In order to make workers know the shape of fishing top and location, and choose s
Impression block is used for judging the depth of fish and shape of fish's top. In order to make workers know the shape of fishing top and location, and choose suitable fishing tools to fish successfully.
Impression block is made of joint steel body and Pb rooted in bottom of joint steel body, there is a circle hole in centre of impression block to circle drill fluid. there is ring groove on the casting part of joint so that fixing impression block, joint connects with pipe string with its upper connection thread.
OD mm (inch) | ID mm (inch) | Connection | OAL (mm) |
406 (16) | 35 (1 3/8) | 7 5/8REG | 483 |
206 (8 7/64) | 30 (1 3/16) | NC50 | 420 |
168 (6 5/8) | 30 (1 3/16) | NC50 | 400 |
130 (5 1/8) | 20 (25/32) | NC38 | 380 |
127 (5) | 20 (25/32) | 3 1/2REG | 380 |
105 (4 1/8) | 15 (19/32) | 2 3/8REG | 360 |
