[中 文] 作用同彈簧式刮削器,但可減少甚至避免刮削管柱落井。
[English] Its function is the same as the spring-type casing scraper, but it can decrease and even avoid that the scraped pipe-column falls in oil well.
型號 | 外徑Φ | 套管規格mm(in) | 總長 | 接頭螺紋 |
FTQ-114 | 105 | 114(4-1/2″) | 500 | 2-7/8TBG |
FTQ-127 | 117 | 127(5″) | 550 | 2-7/8TBG |
FTQ-140 | 132 | 140(5-1/2″) | 550 | 2-7/8REG |
FTQ-178 | 170 | 178(7″) | 750 | NC31 |