Optimization method for fracture parameters considering proppant embedding
Based on the proppant index method and considering factors such as proppant embedding and particle migration,the optimization method of fracture parameters for fractur-ing and packing of offshore loose sandstone reservoirs was studied using mathematical itera-tion and other methods.The basic principle of the proppant index method was summarized,and key parameters such as fracture geometry parameters and non hydraulic conductivity were optimized.The optimization method for fracturing and filling fracture parameters was proposed,and the calculation of case wells was carried out.The results show that the prop-pant index is the ratio of proppant fracture volume to single well controlled reservoir volume.Particle migration will reduce the permeability of supporting fractures,and within a certain range,the degree of reduction gradually increases.Embedding proppant can cause damage to the width of the support layer.With the deepening of particle migration and proppant embed-ding in the formation,the optimal fracture length decreases,the optimal fracture width in-creases,and the corresponding actual yield increase factor decreases.The calculation results of a single well are consistent with the actual construction parameters,and this method has certain guiding significance for optimizing the fracturing and filling fracture parameters of offshore loose sandstone reservoirs.
loose sandstonefrac packproppant index methodproppant embedding
万方数据
维普
