High volume sand trap and method
Patent 6189617 Issued on February 20, 2001. Estimated Expiration Date: 
November 20, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 20, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1466773 2663370 2797755 3023810 3198256 3382925 Junk basket and method of removing foreign material from a well Apparatus and method of mining subterranean rubble piles Multipurpose fluid flow assisted downhole tool Wellbore cleanout apparatus and method InventorsAssigneeApplicationNo. 196536 filed on 11/20/1998US Classes:166/311, Cleaning or unloading well166/162, RECEPTACLES166/227SCREENSExaminersPrimary: Bagnell, DavidAssistant: Dougherty, Jennifer R. Attorney, Agent or FirmForeign Patent References
International ClassesE21B 037/00E21B 003/18 AbstractA sand-capturing tool is disclosed, as well as a method. The tool relies on an eductor. The eductor is supplied by pumped fluid from the surface through a coiled tubing support for the tool. The eductor induces flow into a central tube in the tool which brings in with it the sand to be captured. Ultimately, the cross-sectional area of the induced fluid flow is increased to reduce its velocity and to further induce the sand which has been brought through the narrow inner tube to drop out into an annular area around the inner tube. The clean fluid exits through a screen and goes around the eductor and uphole to the surface. In an alternative embodiment, the assembly can be supported on an electric line employing a downhole pump which provides the motive fluid force for the eductor jet. In this embodiment, the remaining operation is the same.Other References
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