Completion assembly and a method for stimulating, segmenting and controlling erd wells

Abstract

The invention relates to an assembly to be run with a well tubular having openings provided in the wall and for being arranged in a well bore and thereby forming a space between said tubing and the well bore surface. The assembly comprising: first fluid control means and second fluid control means being provided in another opening in said well tubular. The assembly further having a set of packers for sealing of the space between said tubing and the well bore surface, said set of packers being positioned such that a part the tubular having both first and second fluid control means is located between the set of packers. The first fluid control means is adapted such that it is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface. The second fluid control means is adapted such that it is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular.

1 . An assembly to be run with a well tubular having openings provided in a wall and for being arranged in a well bore and thereby forming a space between said tubing and the well bore surface, said assembly comprising:
 first fluid control means being provided in an opening in said well tubular,   second fluid control means being provided in another opening in said well tubular and a set of packers for sealing off the space between said tubing and the well bore surface, said set of packers being positioned such that a part of the tubular having both first and second fluid control means is located between the set of packers, wherein said first fluid control means is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface and that the second fluid control means is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular, said second fluid control means comprises a check valve, which will allow fluid to flow from the interior of said well tubular to said space between the tubular and the well bore.   
     
     
         2 . An assembly to be run with a well tubular having openings provided in a wall and for being arranged in a well bore and thereby forming a space between said tubing and the well bore surface, said assembly comprising:
 first fluid control means being provided in an opening in said well tubular,   second fluid control means being provided in another opening in said well tubular and   a set of packers for sealing off the space between said tubing and the well bore surface, said set of packers being positioned such that a part of the tubular having both first and second fluid control means is located between the set of packers, wherein said first fluid control means is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface and that the second fluid control means is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular, said second fluid control means comprises a valve equipped with a self-closing mechanism which is capable of completely closing off the valve, said self-closing mechanism being adapted such that acid stimulation may take place through the second fluid control means while in their open state.   
     
     
         3 . An assembly according to  claim 1  wherein the first fluid control means comprises a closable opening being operable from the surface. 
     
     
         4 . An assembly according to  claim 1  wherein the check valve is a one-way valve. 
     
     
         5 . An assembly according to  claim 3  comprising a triggering section for controlling of an energy source for controlling said closable opening, said triggering section further being provided with means for communication with a triggering device for initiating the opening or closing of said closable opening. 
     
     
         6 . An assembly according to  claim 1  wherein the first fluid control means comprises a sliding sleeve door (ssd) arranged on the tubular. 
     
     
         7 . An assembly according to  claim 6  wherein screens for the removing of sand particles from the fluid of oil and gas are arranged on the outside of the sliding sleeve door. 
     
     
         8 . An assembly according to  claim 7  wherein said screen is manufactured from the material Boron Carbide. 
     
     
         9 . An assembly according to  claim 1  comprising an inflatable or mechanical set packer section prepared for being expanded by fluid, and being provided with valve means for opening and closing of fluid communication into the inflatable packer section 
     
     
         10 . An assembly according to  claim 1  comprising two inflatable packers each of the prepared for being expanded by fluid and being provided with valve means for opening and closing of fluid communication into the inflatable packers. 
     
     
         11 . An assembly according to  claim 1  comprising an energy section comprising an energy source for the delivering of fluid into the inflatable packer section. 
     
     
         12 . An assembly according to  claim 5  wherein the triggering section further comprising means for controlling of said energy source and/or for controlling of said valve means thereby being capable of controlling the delivery of said fluid into said inflatable packer section, said triggering section further being provided with means for communication with a triggering device for initiating the expansion of said inflatable packer section. 
     
     
         13 . Assembly according to  claim 5 , wherein the triggering device is capable of being pumped through the well tubular. 
     
     
         14 . Assembly according to any one  claim 5 , wherein the triggering by said trigger section can be set by a time delay. 
     
     
         15 . Assembly according to  claim 1 , wherein said trigger section triggers with a certain time delay after a pre selected pressure is monitored by said means for monitoring of the well pressure. 
     
     
         16 . Assembly according to  claim 5 , wherein said trigger section triggers when a pre selected radio frequency identification chip is passing through said trigger section. 
     
     
         17 . A method for sealing a part of an annulus between a well tubular and a well bore, comprising:
 providing one or more assemblies that each include:
 first fluid control means being provided in an opening in said well tubular, 
 second fluid control means being provided in another opening in said well tubular and 
 a set of packers for sealing off the space between said tubing and the well bore surface, said set of packers being positioned such that a part of the tubular having both first and second fluid control means is located between the set of packers, where said first fluid control means is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface and that the second fluid control means is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular, said second fluid control means comprise a check valve, which will allow fluid to flow from the interior of said well tubular to said space between the tubular and the well bore 
   drilling a well into a formation;   introducing into the well the one or more assemblies, said assemblies partake as elements inserted between a conventional tubular, thereby providing an annular space, or annulus, between said tubular and the formation surrounding said tubular;   pumping of acid through said tubular and further through said second fluid control means into the formation in order to stimulate said well;   triggering of at least two assemblies in order to expand two packers to seal off a part of said annular space and to open the first fluid control means, allowing production to flow into the tubular through first fluid control means.   
     
     
         18 . A method for sealing a part of an annulus between a well tubular and a well bore, comprising:
 providing one or more assemblies that each include:
 first fluid control means being provided in an opening in said well tubular, 
 second fluid control means being provided in another opening in said well tubular and 
 a set of packers for sealing off the space between said tubing and the well bore surface, said set of packers being positioned such that a part of the tubular having both first and second fluid control means is located between the set of packers, where said first fluid control means is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface and that the second fluid control means is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular said second fluid control means comprise a check valve, which will allow fluid to flow from the interior of said well tubular to said space between the tubular and the well bore 
   drilling a well into a formation;   introducing into the well the one or more assemblies, said assemblies partake as elements inserted between a conventional tubular, thereby providing an annular space, or annulus, between said tubular and the formation surrounding said tubular;   closing of said first fluid control means;   pumping of acid through said tubular and further through said second fluid control means into the formation in order to stimulate said well;   triggering of at least two assemblies in order to expand two packers to seal off a part of said annular space;   opening of said first fluid control means and blocking of said second fluid control means, thereby allowing production to flow into the tubular or injection of fluids to flow through the first fluid control means into the wellbore.   
     
     
         19 . The method of  claim 18  further comprising opening or closing of said opening in order to establish or shut off the fluid communication between said inner tube and said sealed off part of the annular space.