Drilling fluid filter

Details Drilling fluid filter Drilling fluid filter

2007-01-23

2007-01-23

Bagnell, David (Department: 3672)

Boring or penetrating the earth

With well-type screen

C166S228000

Reexamination Certificate

active

10711595

ABSTRACT:
A drilling fluid filter for placement within a bore wall of a tubular drill string component comprises a perforated receptacle with an open end and a closed end. A hanger for engagement with the bore wall is mounted at the open end of the perforated receptacle. A mandrel is adjacent and attached to the open end of the perforated receptacle. A linkage connects the mandrel to the hanger. The linkage may be selected from the group consisting of struts, articulated struts and cams. The mandrel operates on the hanger through the linkage to engage and disengage the drilling fluid filter from the tubular drill string component. The mandrel may have a stationary portion comprising a first attachment to the open end of the perforated receptacle and a telescoping adjustable portion comprising a second attachment to the linkage. The mandrel may also comprise a top-hole interface for top-hole equipment.

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PCT/US03/16475, Published Dec. 4, 2003, Applicant Baker Hughes; International Search Report; “Documents Considered to Be Relevant”.

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