Shale reservoir brittle mineral earthquake quantitative characterization method

The invention discloses a shale reservoir brittle mineral earthquake quantitative characterization method. The method comprises the following steps: 1, in the same shale oil and gas exploration and development area, selecting coring wells to constitute a sample collection and observation point, and collecting a shale sample; 2, testing the contents of quartz, feldspar and carbonate minerals in the sample respectively, and analyzing to acquire mineral content indexes; 3, acquiring mineral index data for reflecting shale reservoir brittleness; 4, analyzing according to a sample result to obtain index data for reflecting shale brittle mineral features and the environment, and screening typical parameter quantitative indexes of characterizing shale brittle mineral and typical earthquake attributes and earthquake inversion wave impedance indexes ; 5, distinguishing and evaluating shale reservoir brittleness to obtain the shale reservoir brittleness and a flat distribution feature. The method has the characteristics that predict accuracy and exploration and development success rate of a block shale brittle reservoir are improved and the exploration and development cost is low; the method can be widely applied to the fields of exploration evaluation and development design of oil and gas in shale reservoirs.