Apparatus for catching debris in a well-bore

Patent 6250387 Issued on June 26, 2001. Estimated Expiration Date:

January 22, 2019. 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.

Abstract Claims Description Full Text

Patent References

One trip multi-zone gravel packing apparatus
Patent #: 4401158
Issued on: 08/30/1983
Inventor: Spencer , et al.

Slurry up particulate placement tool
Patent #: 4440218
Issued on: 04/03/1984
Inventor: Farley

Gravel packing apparatus and method
Patent #: 4858691
Issued on: 08/22/1989
Inventor: Ilfrey , et al.

Gravel pack installations for wells
Patent #: 5327960
Issued on: 07/12/1994
Inventor: Cornette, et al.

Apparatus and method for placing and for backwashing well filtration devices in uncased well bores
Patent #: 5332045
Issued on: 07/26/1994
Inventor: Ross, et al.

Single trip open hole well completion system and method Patent #: 5579844
Issued on: 12/03/1996
Inventor: Rebardi, et al.

Inventors

Assignee

SPS-AFOS Group Limited

Application

No. 235426 filed on 01/22/1999

US Classes:

166/311, Cleaning or unloading well166/229Inserted screen plug

Examiners

Primary: Novosad, Christopher J.

Attorney, Agent or Firm

International Class

E21B 023/04

Foreign Application Priority Data

1998-03-25 GB

Abstract

A down-hole tool is described for collecting loose debris particles in a well bore. The tool has a body connectable in a work string for actively diverting well fluid through the tool body with at least some of the diverted well fluid being filtered as it passes through the tool by a filter. In a preferred embodiment the tool also comprises a cleaning member, such as a wiper for wiping the casing or liner wall of the well and a trap for trapping filtered debris up stream of the filter.