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A plurality of relatively rigid elements for arrangement into a three-dimensional (3-D) structure that represents an image; also a method for arranging a plurality of relatively rigid elements into a 3-D structure. Each element has a base-thickness and comprises a top surface, an undersurface, and a

A plurality of relatively rigid elements for arrangement into a three-dimensional (3-D) structure that represents an image; also a method for arranging a plurality of relatively rigid elements into a 3-D structure. Each element has a base-thickness and comprises a top surface, an undersurface, and a wall-surface around its perimeter. The perimeter of each of the elements yielding the image, is shaped to represent a component of the image. The elements are adapted for initial arrangement wherein a juxtaposed wall-surface of each adjacent element comprises a beveled plane. In the initial arrangement, the undersurface of two or more elements can be arranged in a pattern of the image such that beveled planes of juxtaposed wall-surfaces are frictionally-unlocked. The elements are also adapted for positioning into the 3-D structure wherein at least a portion of juxtaposed beveled planes are in releasable friction-interlock and top surfaces of elements are tiered with respect to any adjacent element(s). Images for the 3-D structures can be selected from a wide variety of recognizable images as well as abstract graphic images. Beveled planes of juxtaposed wall-surfaces matched for releasable friction-interlock can be oriented as a declining and inclining sloped pair, or vice versa.

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A plurality of relatively rigid elements for arrangement into a three-dimensional (3-D) structure that represents an image; also a method for arranging a plurality of relatively rigid elements into a 3-D structure. Each element has a base-thickness and comprises a top surface, an undersurface, and a

A plurality of relatively rigid elements for arrangement into a three-dimensional (3-D) structure that represents an image; also a method for arranging a plurality of relatively rigid elements into a 3-D structure. Each element has a base-thickness and comprises a top surface, an undersurface, and a wall-surface around its perimeter. The perimeter of each of the elements yielding the image, is shaped to represent a component of the image. The elements are adapted for initial arrangement wherein a juxtaposed wall-surface of each adjacent element comprises a beveled plane. In the initial arrangement, the undersurface of two or more elements can be arranged in a pattern of the image such that beveled planes of juxtaposed wall-surfaces are frictionally-unlocked. The elements are also adapted for positioning into the 3-D structure wherein at least a portion of juxtaposed beveled planes are in releasable friction-interlock and top surfaces of elements are tiered with respect to any adjacent element(s). Images for the 3-D structures can be selected from a wide variety of recognizable images as well as abstract graphic images. Beveled planes of juxtaposed wall-surfaces matched for releasable friction-interlock can be oriented as a declining and inclining sloped pair, or vice versa. said intermediate channel and said production flow bore upstream of said flow restriction; and, f. selectively obstructing fluid flow through either or both of said flow apertures. 2. A method as described by claim 1 wherein said flow apertures are selectively opened and closed. 3. A method as described by claim 1 wherein fluid flow through said first aperture is obstructed by a selective obstruction of flow through said flow restriction. 4. A well tool for regulating the flow rate of fluid from an earth producing zone, said tool comprising: a. a well fluid production tube having a production flow channel therein and a production fluid flow screen for passing fluid from said producing zone into said production flow channel; b. an intermediate flow channel between said flow screen and said production flow channel; c. a static flow restriction in said intermediate channel; d. a first fluid flow aperture between said intermediate flow channel and said production flow channel disposed downstream of said static flow restriction; e. a second fluid flow aperture between said intermediate flow channel and said production flow channel disposed upstream of said static flow restriction; and f. a selectively positioned flow obstruction for substantially preventing fluid flow through either or both of said flow apertures. 5. A well tool as described by claim 4 wherein said selectively positioned obstruction is driven by a shape memory alloy. 6. A well tool as described by claim 4 wherein said selectively positioned obstruction is a solenoid valve operator respective to said flow apertures. 7. A well tool as described by claim 6 wherein said valve operator comprises a flow by-pass element. 8. A well tool as described by claim 7 wherein said by-pass element comprises a valve stem conduit having an open entry aperture in said intermediate flow channel and a plugged exit aperture in said production flow channel. 9. A well tool as described by claim 4 wherein said flow obstruction comprises a fluid flow gate within said intermediate flow channel for obstructing fluid flow into said flow restriction. 10. A well tool as described by claim 9 wherein fluid flow through said fluid flow gate is controlled by a selectively positioned plug. 11. A well tool as described by claim 10 wherein said selectively positioned plug also obstructs fluid flow through said second flow aperture. 12. A method of regulating the flow of production fluid from a fluid producing zone into a production conduit comprising the steps of: (a) providing first and second fluid flow routes for production fluid from a producing zone into a production conduit; (b) providing greater resistance to flow along said second flow route relative to flow along said first flow route; and, (c) providing a first selectively engaged flow obstruction along said first flow route. 13. A method as described by claim 12 further providing a second selectively engaged flow obstruction along said second flow route. 14. A method as described by claim 12 wherein said first and second flow routes extend from an intermediate fluid flow channel between said fluid producing zone and said production conduit. 15. A method as described by claim 12 wherein said first flow obstruction is manually engaged. 16. A method as described by claim 12 wherein said first flow obstruction is automatically engaged. 17. A method as described by claim 12 wherein said first flow obstruction is automatically engaged as a function of a production fluid flow rate. 166/344; US-5992526, 19991100, Cunningham et al., 166/343