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Float shoe and float collar have the feature of high-temperature resistance, good sealing and drillability, and easy to connect, so they replace guide shoes and casing shoes. Float shoe or float collar can be used not only for general technical casing and oil-string casing but also for deep wells, ultra-deep wells and special process wells. Cementing plug plays a role of isolating drilling fluid and cement paste and bump pressure in the cementing operation. Cementing plug is divided into top plug and bottom plug, they both have raised anti-rotation flower petal-type structure at front end, and there is a concave flower petal-type structure. The difference between top plug and bottom plug is that the bottom plug has a blasting disc.
Float Shoe | Float Collar | Casing Size | Connection | ||||
Model | OD | OAL | Model | OD | OAL | ||
mm (inch) | mm (inch) | mm (inch) | mm (inch) | inch | |||
FX4-1/2 | 127 (5) | 370(14-9/16) | FG4-1/2 | 127 (5) | 455 (17-29/32) | 4-1/2 | 4-1/2 BTC |
FX5 | 142.38 (5-39/64) | 415(16-11/32) | FG5 | 142.38 (5-39/64) | 500 (19-11/16) | 5 | 5 BTC |
FX5-1/2 | 154 (6-1/16) | 400 (15-3/4) | FG5-1/2 | 154 (6-1/16) | 470(18-1/2) | 5-1/2 | 5-1/2 BTC |
FX6-5/8 | 187.7 (7-25/64) | 500(19-11/16) | FG6-5/8 | 187.7 (7-25/64) | 550 (21-21/32) | 6-5/8 | 6-5/8 BTC |
FX7 | 194.5 (7-21/32) | 535 (21-1/16) | FG7 | 194.5 (7-21/32) | 586 (23-1/16) | 7 | 7 BTC |
FX9-5/8 | 270 (10-5/8) | 550 (21-21/32) | FG9-5/8 | 270 (10-5/8) | 720 (28-11/32) | 9-5/8 | 9-5/8 BTC |
FX13-3/8 | 365 (14-3/8) | 550 (21-21/32) | FG13-3/8 | 365 (14-3/8) | 720 (28-11/32) | 13-3/8 | 13-3/8 BTC |
Top Plug | Bottom Plug | Casing Size | Temperature | ||||
Model | OD | Model | OD | ||||
mm (inch) | mm (inch) | inch | |||||
PGT7 | 170 (6-11/16) | PGB7 | 170 (6-11/16) | 7 | 120°C | ||
PGT245 | 232 (9-1/8) | PGB245 | 232 (9-1/8) | 9-5/8 | 120°C | ||
PGT339 | 325 (12-51/64) | PGB339 | 325 (12-51/64) | 13-3/8 | 120°C | ||
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