Sintered screen completion

Details Sintered screen completion Sintered screen completion

1992-07-29

1994-03-22

Dang, Hoang C.

Wells

Screen with valve, closure, changeable restrictor or portion...

166147, 166157, 166228, E21B 4308, E21B 4310, E21B 4312

Patent

active

052955389

ABSTRACT:
A sintered metal screen is releasably suspended from a packer mandrel by a locking mandrel and a landing nipple. The sintered metal screen and locking mandrel are retrievable with the assistance of a running tool which is insertable into the bore of the locking mandrel. According to this arrangement, the sintered metal sand screen can be removed and replaced without retrieving the packer or the production tubing. In one embodiment, the sintered metal screen is enclosed within the bore of a sliding side valve. The sliding side valve can be opened and closed as desired for selectively admitting production from various producing zones, or for isolation of a damaged screen. In another embodiment, an auxiliary sintered metal screen is inserted into the bore of a primary screen, for example, a conventional wire-wrap sand screen. The sintered metal sand screen is thus interposed in the flow path for screening out sand fines which may be conducted through the wire-wrap screen because of screen damage caused by corrosion or sand erosion.

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