公开(公告)号：US06607032B2

公开(公告)日：2003-08-19

申请号：US09947868

申请日：2001-09-06

申请人： Benn A. Voll ,  Elmer R. Peterson ,  Simon Angelle ,  Ken Dyson ,  John L. Baugh ,  John T. Broome

发明人： Benn A. Voll ,  Elmer R. Peterson ,  Simon Angelle ,  Ken Dyson ,  John L. Baugh ,  John T. Broome

IPC分类号： E21B4308

CPC分类号： E21B43/108 ,  B01D29/111 ,  B01D29/15 ,  E21B43/084 ,  E21B43/103 ,  E21B43/105

摘要： A downhole completion method and an expandable filtration apparatus are disclosed. The filter assembly comprises a plurality of layers beginning with a coated perforated base pipe. The coating reduces the force required for expansion. A drainage layer overlays the base pipe with the filtration layer above it. The drainage layer improves flow through the filtration layer and protects it from burrs in the base pipe. A filtration enhancement layer fits over the filtration layer and an outer shroud protects the assembly during run in. The assembly can be used as made or expanded downhole in one or a series of expansions.

公开(公告)号：US06478092B2

公开(公告)日：2002-11-12

申请号：US09729808

申请日：2000-12-05

申请人： Benn A. Voll ,  Elmer R. Peterson ,  Simon Angelle ,  Ken Dyson ,  John L. Baugh ,  John T. Broome

发明人： Benn A. Voll ,  Elmer R. Peterson ,  Simon Angelle ,  Ken Dyson ,  John L. Baugh ,  John T. Broome

IPC分类号： E21B4308

CPC分类号： E21B43/108 ,  B01D29/111 ,  B01D29/15 ,  E21B43/084 ,  E21B43/103 ,  E21B43/105

摘要： Three embodiments of an expandable screen are described. In the preferred embodiment, the base layer, filtering layer, and outer layer are joined together in a sintering furnace in the form of a flat sheet which is in turn rolled up. The layered sheet is then formed into a tube by rolling it to make a longitudinal or spiral joint which is welded with connections placed on ends. In an alternative embodiment, the base layer and filtering layer are sintered together and formed into a tube which is in turn inserted into an outer protective tube. In a third embodiment, a base pipe is perforated and its exterior surface threaded. A wire runs through the threads with a protective jacket over the underlying assembly. Upon expansion, the opening sizes remain relatively constant.