When profile control of partial slant hole is carried out, some problems appear frequently such as unsealed, pipe string creeping, the seal of packer can be checked and so on.

• 针对部分斜直井在调剖时,经常出现不密封、管柱蠕动和不能验封等问题,研制出一种防蠕动、密封性能好、可验封的新型斜直井调剖管柱。