Injection and production flow rate regulating system for slimhole wells

Abstract

A flow rate regulating system within an oil well with casing with a diameter less than or equal to 3½ inches, wherein the flow rate regulating system comprises: at least one regulating valve, for regulating flowrate, having a generally cylindrical body with a plurality of elongated grooves, a top sub in its upper portion and a sliding sleeve inside; and a regulating and calibrating shifting tool for regulating and calibrating the position of the sliding sleeve which has a generally cylindrical collet, a block set and a pair of nuts on each side of the block set.

1 . A flow rate regulating system for flow rate regulation within an oil well with a casing with a diameter less than or equal to 3½ inches, wherein the flow rate regulating system comprises:
 at least one flow rate regulating valve for regulating flow rate, having a generally cylindrical body with a plurality of elongated grooves, a top sub in an upper portion and a sliding sleeve within; and 
 a regulating and calibrating shifting tool for regulating and calibrating the position of the sliding sleeve which has a generally cylindrical collet, a block set and a pair of nuts on each side of the block set. 
 
     
     
         2 . The system according to  claim 1 , wherein the at least one flow rate regulating valve comprises a flow rate regulating valve for each well layer. 
     
     
         3 . The system according to  claim 1 , wherein the sliding sleeve has a free inner passage that allows the shifting tool and flow measurement tools passage in order to establish a fluid distribution therein. 
     
     
         4 . The system according to  claim 1 , wherein the sliding sleeve has a notch on its inner surface. 
     
     
         5 . The system according to  claim 1 , wherein the collet has a protuberance at its lower end. 
     
     
         6 . The system according to  claim 1 , wherein the shifting tool is designed to freely pass through the interior of the at least one flow rate regulating valve. 
     
     
         7 . The system according to  claim 1 , wherein the block set allows gradually regulating the displacement of the sliding sleeve according to its position in relation to the collet. 
     
     
         8 . The system according to  claim 1 , wherein the pair of nuts comprise a nut and a lock nut. 
     
     
         9 . The system according to  claim 1 , wherein the shifting tool is actuated from the surface by a slickline or wireline equipment