| 摘要 |
Junk basket (10) is provided for collecting debris from a wellbore cleaning operation, and includes a central mandrel (14) having a throughbore (16) and an outer shell (24) defining a generally annular junk space (40). The outer shell (24) may be configured such that the annulus (27) includes a reduced portion (28). Flow holes (30) in the outer shell are preferably angled substantially upward, and are positioned to discharge fluid to the annulus (27). According to a method of the invention, fluid is passed from an upper tubing string, through the central mandrel, into the wellbore and upward through the annulus and past the flow holes, thereby reducing pressure of flow past the well holes to pass fluid from the junk space through the flow holes. |
