Method of treating and measuring various parameters in pipelines

Abstract

A single tractor unit is provided for pulling a tractor, in which the tractor itself drives a plurality of hydraulic motors which control a crane unit, a coiled tubing injection unit, and the pumps and motors associated with a liquid nitrogen system which is used for injecting gaseous hydrogen into a workover well with coiled tubing. In an alternative mode, the liquid nitrogen system is replaced with one or more nitrogen generators which gather nitrogen from the earth's atmosphere to be pumped through the coiled tubing into the well being treated. Alternatively, the gaseous nitrogen source is one or more tanks of compressed nitrogen gas. Coiled tubing is described which embeds one or more stainless steel tubes for transporting gas, liquid or other fluids therethrough and also includes the use of one or more cords which are used to assist in maintaining the coiled tubing as having a circular cross-section, with such cords either being electrical or non-electrical in nature.

37 . A method for treating and/or measuring various parameters in pipelines comprising: 
 injecting a length of coiled tubing from a first location at or along said pipeline to a second location in said pipeline, wherein said coiled tubing is substantially circular in cross-section, and has embedded therein, at least one tube for transporting fluids from said first location to said second location;    pumping a pipeline pig connected to a first end of said coiled tubing from said first location to said second location;    pumping fluid from said first location to said second location.    
     
     
         38 . The method according to  claim 37 , wherein said at least one tube comprises a first tube and a second tube.  
     
     
         39 . The method according to  claim 38 , wherein first and second chemicals are pumped through said first and second tubes, respectively, from said first location to said second location.  
     
     
         40 . The method according to  claim 37 , wherein said length of coiled tubing also has at least one electrical line embedded therein running from said first location to said second location.  
     
     
         41 . The method according to  claim 40 , wherein said at least one electrical line comprises a first pair of electrical lines.