Junk basket and method of use

Details Junk basket and method of use Junk basket and method of use

E - Fixed Constructions

21

B

E21B 31/08 (2006.01) E21B 27/02 (2006.01) E21B 33/134 (2006.01)

Patent

CA 2291991

A junk basket comprises a sleeve sized to fit within a well bore. The sleeve has a bore therethrough, an internal latch at its top end for connection to a complementary retrieval tool having an external latch. A basket floor is movable axially in the bore between a first position intermediate the axial length of the sleeve, and a second position resting on a retaining shoulder at the bottom of the sleeve. In a well bore, the basket floor is supported at the first position, preferably on a retrievable bridge plug, and debris is collected in the defined volume above the floor. When the basket is lifted during retrieval, the basket floor falls to the second position, increasing the collection volume, loosening the debris and loosening the basket in the well bore for ease of retrieval. Further, a novel method of jointly deploying a junk basket and bridge plug results. The basket is connected to the plug and a setting/insertion tool passes through the basket's bore and through a port in the basket floor. Once the plug is set in the well bore the setting tool is removed. By lifting the retrieving tool with a predetermined load over string weight, the basket is sheared from the plug, a ball engages the port in the floor and the floor falls, loosening the debris and basket in the well bore.

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