Abstract
A new fracturing mode is put forward in the paper. Compared with the former mode, the new one has the following advancements: 1) Some key reservoir parameters such as effective permeability, effective thickness, loss coefficient, fracture azimuth and fracture height as well are all regarded as stochastic variables according to field statistic results; 2) Fracture length and conductivity are accordingly stochastic variables as a result of the random distribution of such fracturing treatment parameters as pumping rate, sand to liquid ratio, pad volume and sand volume as well; 3) As a result of undetermined reservoir and fracture variables, the post-fracturing rate is stochastic in most cases; 4) Monte Carlo method is utilized to perform economic analysis, and the relationship of net present value versus probability in a certain unconventional reservoir may be available on the base of above works, so that a decision-making policy may be determined accordingly. After that, one field case is hydraulically fractured utilizing above strategy, and the post-fracturing effect is very satisfied, which indicates that the new overall hydraulic fracturing mode put forward in the paper is reliable and if it is put in to field applications, a greater economic benefits may be expected.
