Sand screen completion

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