Gemini surfactant connected with organic silicon group as well as preparation method and application of gemini surfactant

The invention provides a gemini surfactant connected with organic silicon groups as well as a preparation method and application of the gemini surfactant and belongs to the technical field of oilfield oil extraction. The gemini surfactant connected with the organic silicon groups provided by the invention has a structural formula as shown in a formula (1); in the formula (1), R1 and R2 represent C8-C20 saturated or unsaturated hydrocarbon chains, R3 and R4 represent alkyl carboxylic acid or sulfonate groups, R5 and R6 represent methyl and/or phenyl, when both R5 and R6 are phenyl or one of R5 and R6 is phenyl, m is 1; and when R5 and R6 are both methyl, m is an integer of 0-11. The gemini surfactant connected with the organic silicon groups provided by the invention is easy to dissolve in water, is not easy to hydrolyze, has good surface tension and interfacial tension performance, is low in critical micelle concentration, can be suitable for oil displacement exploitation of low-permeability oil reservoirs an