US2017211361A1PendingUtilityA1

Improvements in and relating to screens

51
Assignee: WEATHERFORD UK LTDPriority: Jan 22, 2014Filed: Jan 21, 2015Published: Jul 27, 2017
Est. expiryJan 22, 2034(~7.5 yrs left)· nominal 20-yr term from priority
Inventors:Stephen ReidAndrew McgeochMatthew ManningDaniel George Purkis
E21B 43/082E21B 43/086E21B 43/084E21B 17/1078E21B 43/162E21B 43/045E21B 43/088E21B 34/06E21B 43/08E21B 2034/007E21B 2200/06
51
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Claims

Abstract

A screen assembly, such as a downhole/sand screen assembly, comprising first and second screen portions or screens longitudinally coupled together, wherein there is provided a fluid flow path between the first and second screen portions or screen. Optionally, the first and second sleeves are coupled or connected by a centraliser or further sleeve or screen, and/or optionally by or via first and second support ring.

Claims

exact text as granted — not AI-modified
1 . The assembly of  claim 150 , wherein the at least one flow control element comprises first and second screen portions or screens longitudinally coupled together, wherein there is provided a fluid flow path between the first and second screen portions or screens. 
     
     
         2 - 3 . (canceled) 
     
     
         4 . The assembly of  claim 1 , wherein the at least one tubular comprises a first pipe for the first screen and comprises a second pipe for the second screen, wherein the first and second pipes are coupled by a threaded coupling. 
     
     
         5 . The assembly of  claim 1 , wherein the first and second screens are coupled or connected by at least one of a centralizer, a further sleeve or screen, and first and second support rings. 
     
     
         6 . The assembly of  claim 1 , wherein the fluid flow path is annular. 
     
     
         7 . The assembly of  claim 1 , wherein a centralizer or a further sleeve or screen forms a portion of the fluid flow path; and/or wherein the first and second screen portions or screens and/or the further sleeve or screen extend circumferentially around the at least one tubular. 
     
     
         8 . The assembly of  claim 150 , wherein the at least one flow control element comprises first and second screens longitudinally disposed relative to one another, wherein a further screen or screen portion is provided between adjacent ends of the first and second screens. 
     
     
         9 - 10 . (canceled) 
     
     
         11 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe, wherein the at least one flow control element comprises a sleeve, and wherein the assembly comprises at least one support provided between the pipe and the sleeve, wherein the at least one support has a cross-section comprising first and second points, vertices, surface discontinuities and/or corners. 
     
     
         12 - 23 . (canceled) 
     
     
         24 . The assembly of  claim 150 , wherein the at least one flow control element comprises a screen, and wherein the screen comprises wire having a cross-section comprising first and second points, vertices, surface discontinuities and/or corners. 
     
     
         25 - 37 . (canceled) 
     
     
         38 . The assembly of  claim 150 , wherein the at least one flow control element comprises a screen, and wherein the screen comprises wire having a cross-section comprising a rectilinear shape or parallelogram. 
     
     
         39 - 42 . (canceled) 
     
     
         43 . The assembly of  claim 150 , wherein the at least one flow control element comprises coated and/or hardened wire. 
     
     
         44 - 49 . (canceled) 
     
     
         50 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe, and wherein the at least one flow control element comprises a plurality of ceramic discs around the pipe. 
     
     
         51 - 66 . (canceled) 
     
     
         67 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe and/or tubular, and wherein the at least one flow control element comprises a plurality of slotted ports or longitudinally extending ports on the pipe and/or tubular. 
     
     
         68 - 70 . (canceled) 
     
     
         71 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe, wherein the pipe comprises a solid or non-perforated pipe. 
     
     
         72 . (canceled) 
     
     
         73 . The assembly of claim  2 , wherein the pipe comprises a base pipe or production tubing. 
     
     
         74 . The assembly of  claim 150 , wherein the at least one flow control element is an erosion resistant microporous sleeve. 
     
     
         75 . The assembly of  claim 74 , wherein the microporous sleeve comprises a material selected from a metal foam or a ceramic foam. 
     
     
         76 . The assembly of  claim 75 , wherein the microporous sleeve comprises a material selected from the group consisting of microporous polymeric foams, microporous metal foams, microporous carbide monoliths, silicon carbide, tungsten carbide, or titanium carbide monoliths or microporous nitride monoliths, such as boron nitride. 
     
     
         77 . The assembly of  claim 74 , wherein the microporous sleeve intimately contacts and/or is bonded to an outer surface of the at least one tubular. 
     
     
         78 . The assembly of  claim 150 , wherein that at least one tubular comprises a pipe, wherein the at least one flow control element comprises a sleeve, wherein the pipe comprises openings or ports, and wherein the sleeve comprises a foam or microporous material, the sleeve being bonded with or to an exterior surface of the pipe. 
     
     
         79 . (canceled) 
     
     
         80 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe having at least one port or perforation or hole, wherein the at least one flow control element comprises an associated valve of each port or perforation or hole. 
     
     
         81 - 92 . (canceled) 
     
     
         93 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe having at least one port or perforation or hole, and wherein the at least one flow control element comprises at least one sleeve provided within the pipe, the at least one sleeve having at least one respective port or perforation or hole which in a closed position is not aligned or is misaligned with the at least one port or perforation or hole in the pipe but which in an open position is alignable or aligned with the at least one port or perforation or hole in the pipe. 
     
     
         94 - 99 . (canceled) 
     
     
         100 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe, wherein the at least one flow control element comprises a plurality of sleeves, and wherein the sleeves are provided within the pipe. 
     
     
         101 - 106 . (canceled) 
     
     
         107 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe comprising at least one port/perforation/hole, and wherein the at least one flow control element comprises a respective seal or plug of or each port. 
     
     
         108 - 120 . (canceled) 
     
     
         121 . The assembly of  claim 150 , wherein the at least one tubular comprising comprises a pipe, wherein the at least one flow control element comprises a sleeve, wherein the pipe comprises a port(s), and wherein the sleeve comprises a solid or wall portion(s) or baffles at or near the port(s). 
     
     
         122 - 124 . (canceled) 
     
     
         125 . The assembly of  claim 150 , wherein the at least one flow control element comprises first and second screens longitudinally disposed relative to one another, wherein a centralizer is provided between adjacent ends of the first and second screens. 
     
     
         126 - 127 . (canceled) 
     
     
         128 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe, and wherein the at least one flow control element comprises a plurality of ceramic discs stacked on each other, wherein at least one spacer is provided between two adjacent discs, wherein each at least one spacer is aligned with a respective hole or slot or perforation in the pipe. 
     
     
         129 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe, and wherein the at least one flow control element comprises a plurality of ceramic discs stacked on each other, wherein at least one spacer is provided between at least two adjacent discs, wherein each spacer is shaped to diffuse fluid flow exiting a hole or slot or perforation in the pipe. 
     
     
         130 - 143 . (canceled) 
     
     
         144 . The assembly of  claim 150 , wherein the at least one tubular comprises a plurality of pipes, wherein the at least one flow control element comprises a plurality of screens, wherein each screen comprises a shifting sleeve, wherein the assembly is arranged such that the shifting sleeves are capable of being opened (and/or closed) sequentially. 
     
     
         145 . (canceled) 
     
     
         146 . The assembly of  claim 150 , wherein the at least one tubular comprises a pipe having a port, and wherein the at least one flow control element comprises an inner sleeve and a pin within the port. 
     
     
         147 . (canceled) 
     
     
         148 . The assembly of  claim 1 , having enhanced erosion resistance  claim 1 . 
     
     
         149 . (canceled) 
     
     
         150 . An assembly for a downhole/sand screen or screen assembly, the assembly comprising:
 at least one tubular; and   at least one flow control element disposed relative to the at least one tubular.

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