Objective Given the abundant lithium and bromium resources in the formation water of some gas fields in China,to clarify the comprehensive utilization value of gas field water development,the total resources of lithium and bromium are quantitatively calculated and evaluated.Methods Based on the comprehensive geological method,this paper innovatively proposes a new method for quantitative calculation of lithium and bromium resources for the developed gas field formation water(hereinafter referred to as gas field water).It calculates the industrial raw materials such as lithium carbonate and bromine that can be extracted from the whole gas reservoir in combination with the latest lithium and bromium extraction process.Results Firstly,W gas reservoir is a bottom water gas reservoir with a unified gas-water interface,with a total formation water reserve of 2.992× 109 m3.Secondly,the mineralization degree constraint,well point area,and contour area balance methods were used to calculate the average content of lithium and bromine in the gas reservoir.As a results,it has been determined that the average mass concentration of lithium and bromium in gas field water is 114.8 mg/L and 181.7 mg/L,respectively.Thirdly,based on the water reserves and the content of lithium and bromium,the quantitative calculation of the total lithium content in gas field water is 0.343 5 × 106 t,and the total bromium content is 0.543 7 × 106 t.Fourthly,based on the content of lithium and bromium resources,it is predicted to extract 1.461 9× 106 t lithium carbonate and 1.441 9× 106 t bromine.Conclusions Based on the current development status of developed gas fields,combined with the utilization of new energy in gas field development,this article innovatively proposes a new method for quantitatively calculating lithium and bromium resources extracted from gas field water,providing certain guiding significance for the effective development and new energy utilization of similar gas fields at home and abroad.
new energylithium extractionbromium extractionquantitative calculationgas field watercomprehensive utilization
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