Method for quantifying contribution of different energies of shale oil reservoir to recovery ratio

The invention relates to the technical field of reservoir engineering in oilfield development, in particular to a method for quantifying contribution of different energies of shale oil reservoirs to recovery efficiency. In allusion to quantitative characterization of contribution of rock and fluid elastic energy to the recovery ratio in the shale oil depletion-type development process, different from a numerical simulation prediction method which needs many parameters and has high requirements on the precision of a model, the method has the greatest advantages that the required parameters are few and are easy to obtain; the basic physical property of reservoir rock fluid is obtained only by means of fluid phase state simulation calculation, rock core physical property parameter testing and the like, and quantitative calculation of different types of elastic energy recovery rates and quantification of contribution of the recovery rates can be simply and rapidly achieved. The establishment of the method clarifi