Method of Retrofitting a Sleeve Apparatus to Repair High-pressure Flow Iron Corrosion

Abstract

A method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion is conducted between a flow iron male pipe-end and a flow iron female pipe-end. First, the union between the two pipe-ends are disassembled to identify a corrected internal surface of the female pipe-end. Then, the corroded internal surface is drilled and cleaned to delineate a sleeve cavity that is identical to an external surface of a sleeve body. The sleeve body is then connected to the female pipe-end via the sleeve cavity. The male pipe-end and the female pipe-end are then compressed together with a second O-ring seal in between. A nut that was removed during the disassembling process is threaded around the male pipe-end and the female pipe-end to complete the retrofitting method.

What is claimed is: 
     
         1 . A method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion comprising:
 (A) providing a flow iron male pipe-end, a flow iron female pipe-end, a first O-ring seal, and a nut, wherein the flow iron male pipe-end is compressed into the flow iron female pipe-end with the first O-ring seal in between, wherein the nut is threadedly engaged around the flow iron male pipe-end and the flow iron female pipe-end;   (B) providing a sleeve body and a second O-ring seal;   (C) removing the nut from the flow iron male pipe-end and the flow iron female pipe-end;   (D) disassembling the flow iron male pipe-end from the flow iron female pipe-end;   (E) removing the first O-ring seal from the flow iron female pipe-end in order to identify a corroded internal surface of the flow iron female pipe-end;   (F) drilling and cleaning the corroded internal surface of the flow iron female pipe-end in order to delineate a sleeve cavity, wherein the sleeve cavity is identical to an external surface of the sleeve body;   (G) connecting the sleeve body into the flow iron female pipe-end through the sleeve cavity;   (H) compressing the second O-ring seal into flow iron female pipe-end and against the sleeve body;   (I) compressing the flow iron male pipe-end into the flow iron female pipe-end and against the second O-ring seal; and   (J) re-threading the nut around the flow iron male pipe-end and the flow iron female pipe-end.   
     
     
         2 . The method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion as claimed in  claim 1 , wherein the sleeve body is a rigid body. 
     
     
         3 . The method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion as claimed in  claim 1 , wherein the second O-ring seal is an elastic body. 
     
     
         4 . The method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion as claimed in  claim 1  comprising:
 providing a secondary sleeve body; 
 identifying a corroded internal surface of the flow iron male pipe-end after step (E); 
 drilling and cleaning the corroded internal surface of the flow iron male pipe-end in order to delineate a secondary sleeve cavity, wherein the secondary sleeve cavity is identical to an external surface of the secondary sleeve body; and 
 connecting the secondary sleeve body into the flow iron male pipe-end through the secondary sleeve cavity before step (I). 
 
     
     
         5 . The method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion as claimed in  claim 4 , wherein the secondary sleeve body is a rigid body. 
     
     
         6 . The method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion as claimed in  claim 1 , wherein an inner diameter of the flow iron male pipe-end ranges from 1 inch to 5 inches. 
     
     
         7 . The method of retrofitting a sleeve apparatus to repair high-pressure flow iron corrosion as claimed in  claim 1 , wherein an inner diameter of the flow iron female pipe-end ranges from 1 inch to 5 inches.