Control line with seal enhancement feature, method and system

Abstract

A control line including a control line body having an outside diameter and a textured surface at the outside diameter. A control line including a control line body and an expandable material disposed about the body. A borehole system including a borehole in a subsurface formation, a string in the borehole and a control line disposed outside of the string. A method to enhance sealing around a control line, including disposing cement in an annular space about a string in a borehole, flowing cement around a control line disposed in the annular space, interacting a seal enhancement feature with the cement, and sealing the cement to the control line.

What is claimed is: 
     
         1 . A control line, comprising:
 a control line body having an outside diameter; and   a textured surface at the outside diameter.   
     
     
         2 . The control line as claimed in  claim 1 , wherein the textured surface is a longitudinal groove or spline. 
     
     
         3 . The control line as claimed in  claim 1 , wherein the textured surface is randomly roughened. 
     
     
         4 . The control line as claimed in  claim 3 , wherein the random roughness is minimum 250 Ra. 
     
     
         5 . The control line as claimed in  claim 1 , wherein the textured surface is ringed grooves or protrusions. 
     
     
         6 . A control line comprising:
 a control line body; and   an expandable material disposed about the body.   
     
     
         7 . The control line as claimed in  claim 6 , wherein the expandable material is a swellable material. 
     
     
         8 . The control line as claimed in  claim 7 , wherein the swellable material is hydrophilic. 
     
     
         9 . The control line as claimed in  claim 7 , wherein the swellable material is oleophilic. 
     
     
         10 . A borehole system comprising:
 a borehole in a subsurface formation;   a string in the borehole; and   a control line as claimed in  claim 1  disposed outside of the string.   
     
     
         11 . A borehole system comprising:
 a borehole in a subsurface formation;   a string in the borehole; and   a control line as claimed in  claim 6  disposed outside of the string.   
     
     
         12 . A method to enhance sealing around a control line, comprising:
 disposing cement in an annular space about a string in a borehole;   flowing cement around a control line disposed in the annular space;   interacting a seal enhancement feature with the cement; and   sealing the cement to the control line.   
     
     
         13 . The method as claimed in  claim 12 , wherein the interacting is bonding cement to a textured surface of the control line. 
     
     
         14 . The method as claimed in  claim 12 , wherein the interacting is expanding an expandable material disposed around the control line into sealing contact with the cement. 
     
     
         15 . The method as claimed in  claim 14 , wherein the expanding includes penetration of the expandable material into porosity of the cement. 
     
     
         16 . The method as claimed in  claim 14 , wherein the expanding occurs prior to setting of the cement. 
     
     
         17 . The method as claimed in  claim 14 , wherein the expanding occurs after setting of the cement. 
     
     
         18 . The method as claimed in  claim 14 , wherein the expanding occurs by drawing hydration from the cement.