Annular screen communication system
First Claim
Patent Images
1. A screen assembly for subterranean use, comprising:
- at least one first screen module comprising a base pipe having a surrounding screen to define an annular space therebetween that is open on at least one end;
at least one second screen module comprising a base pipe having a surrounding screen to define an annular space therebetween that is open on at least one end;
said base pipes of said modules are connected with at least one connection such that said annular space open ends face each other;
at least one shroud mounted over said connection and secured on opposed ends adjacent said screens to extend said annular space between said open ends;
at least one valve for selectively communicating said annular space and a passage defined within said base pipe and said connection;
said at least one valve comprises two spaced valves adjacent opposed ends of said extended annular space to selectively allow flow through said screens during gravel packing and during production.
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Accused Products
Abstract
Screen sections have opposed open ends near the threaded connection of a base pipe and on opposed ends. The base pipes have premium threads for connection. A shroud is placed over the premium bases pipe connection that spans from one open ended screen section to another that is adjacent. Collectively a long annular space is created under the screens and alternating shrouds with access to within the base pipes provided preferably at opposed ends. The valve on one end takes returns during gravel packing and the other takes production to the surface.
25 Citations
19 Claims
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1. A screen assembly for subterranean use, comprising:
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at least one first screen module comprising a base pipe having a surrounding screen to define an annular space therebetween that is open on at least one end; at least one second screen module comprising a base pipe having a surrounding screen to define an annular space therebetween that is open on at least one end; said base pipes of said modules are connected with at least one connection such that said annular space open ends face each other; at least one shroud mounted over said connection and secured on opposed ends adjacent said screens to extend said annular space between said open ends; at least one valve for selectively communicating said annular space and a passage defined within said base pipe and said connection; said at least one valve comprises two spaced valves adjacent opposed ends of said extended annular space to selectively allow flow through said screens during gravel packing and during production. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A completion method for subterranean use, comprising;
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running in an assembly of screen joints comprising base pipes connected with at least one connection with at least one shroud spanning between screens on connected base pipes and over said connection to form a continuous elongated annular space between said base pipes and said screens selectively communicated to a passage within base pipes with at least one valve; opening said valve to take flow through said screens, said annular space and said passage; providing at as said at least one valve, spaced valves selectively communicating to said annular space; taking returns when gravel packing through a first of said valves; taking production from a surrounding formation through a second of said valves. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A screen assembly for subterranean use, comprising:
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at least one first screen module comprising a base pipe having a surrounding screen to define an annular space therebetween that is open on at least one end; at least one second screen module comprising a base pipe having a surrounding screen to define an annular space therebetween that is open on at least one end; said base pipes of said modules are connected with at least one connection such that said annular space open ends face each other; at least one shroud mounted over said connection and secured on opposed ends adjacent said screens to extend said annular space between said open ends; at least one valve for selectively communicating said annular space and a passage defined within said base pipe and said connection; said first and second screen modules comprising spaced members extending in respective said annular spaces between a respective base pipe and an end ring, said screen from a respective module is attached to a respective end ring; said spaced members are secured to a respective said base pipe with threads; said spaced members are secured to a respective end ring with threads. - View Dependent Claims (18)
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19. A completion method for subterranean use, comprising;
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running in an assembly of screen joints comprising base pipes connected with at least one connection with at least one shroud spanning between screens on connected base pipes and over said connection to form a continuous elongated annular space between said base pipes and said screens selectively communicated to a passage within base pipes with at least one valve; opening said valve to take flow through said screens, said annular space and said passage; using spaced members to separate a respective said screen from a respective base pipe while permitting flow therebetween for continuity of said annular space; using an end ring to retain said spaced members to a respective base pipe; swaging an end of a said screen to said end ring when creating said annular space; connecting said end ring to said spaced members and said spaced members to a respective base pipe with threading.
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Specification