Frac water blending system

Abstract

A water blending system and associated method for a gas shale well is provided, which includes a first inlet pipeline that receives water from a freshwater source. The first inlet pipeline has a first valve. A second inlet pipeline receives flow back water and has a second control valve. A third pipeline receives water flow from the first and second pipelines. The first pipeline has a salination level detector, the third pipeline flowing water into a tank; wherein the water flow of the first and second inlet pipelines is adjusted based on a salination level detected by the salination level detector.

1 . A water blending system for a gas shale well, comprising:
 a first inlet pipeline receiving water from a freshwater source, the first inlet pipeline having a first valve;   a second inlet pipeline receiving flow back water, the second inlet pipeline having a second control valve;   a third pipeline, receiving water flow from the first and second pipelines, the first pipeline having a salination level detector, the third pipeline flowing water into a tank.   
     
     
         2 . The water bending system of  claim 1  wherein the water flow of the first and second inlet pipelines is adjusted based on a salination level detected by the salination level detector 
     
     
         3 . The water blending system of  claim 2  wherein the first and second inlet pipes meet the third pipeline at a junction. 
     
     
         4 . The water blending system of  claim 3  wherein the third pipeline has a siphon tube exterior thereto. 
     
     
         5 . The water blending system of  claim 4  wherein the first and second valves may be bypassed through respective first and second bypass lines. 
     
     
         6 . The water blending system of  claim 5  wherein the third pipeline has a plurality of agitation plates. 
     
     
         7 . The water blending system of  claim 6  wherein the first and second pipelines have respective first and second flow meters. 
     
     
         8 . The water blending system of  claim 7  wherein the first and second flow meters are magnetic flow meters. 
     
     
         9 . A method of providing frac water to a tank, comprising:
 receiving a flow of fresh water from a first pipeline, the first pipeline having a first control valve;   receiving a flow of flow back water from a second pipeline, the second pipeline having a second control valve;   combining the flow of fresh water from the first pipeline and flow back water from the second pipeline into a third water flow;   determining the salination level of the combined water flow, and:   if the salination level is above a maximum level, then increasing the first pipeline flow or decreasing the second pipeline flow; or   if the salination level is below a minimum level, increasing the second pipeline flow or decreasing the first pipeline flow.   
     
     
         10 . The method of  claim 9  wherein the first pipeline flow is set at a maximum level, and if the salination level is greater than the maximum level, the second pipeline flow is reduced. 
     
     
         11 . The method of  claim 10  wherein the second pipeline flow is set at a maximum level and if the salination level is greater than the maximum level, the first pipeline flow is increased.