DEBRIS CATCHER FOR COLLECTING WELL DEBRIS

申请公布号：US2010243258(A1)

申请号：US20090412084

申请日期：2009.03.26

申请公布日期：2010.09.30

申请人：

SMITH INTERNATIONAL, INC.

发明人：FISHBECK CRAIG;WOLF JOHN C.

分类号：E21B37/00;E21B43/00

主分类号：E21B37/00

摘要：A downhole debris recovery tool including a ported sub coupled to a debris sub, a suction tube disposed in the debris sub, at least one magnet disposed in the debris removal tool, and an annular jet pump sub disposed in the ported sub and fluidly connected to the suction tube. A method of removing debris from a wellbore including the steps of lowering a downhole debris removal tool into the wellbore, flowing a fluid through a bore of an annular jet pump sub, jetting the fluid from the annular jet pump sub into a mixing tube, displacing an initially static fluid in the mixing tube through a diffuser, thereby creating a vacuum effect in a suction tube to draw a debris-laden fluid into the tool, flowing the debris-laden fluid past at least one magnet disposed in a debris housing, and removing the tool from the wellbore is also disclosed.

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