The Method Study on Fine Characterization of Complex Artificial Cracks Network for Vertical Well of T Block

In previous reservoir numerical simulation, artificial cracks network was usually described by equivalent grid simulation, that was, gave some relational characteristic parameter to fracture network based on geological statistics method. While, this method cannot accurately describe the pattern and extension of complex artificial cracks. In this paper, bases on Geo-Stress modeling, we use the method of cracks simulation in module Kinetix, add the optimization of crack length, height, and some construction parameters in fracturing design, and also some construction parameters at the same time, in order to optimize irregular and complex and more practical modeling of the artificial cracks network. The article optimizes crack parameters during the simulation process, concludes that, for the fracture network fracturing of vertical wells in T Block, assuming that there is no need for fro-fracturing/mid-fracturing energy replenishment and a certain amount of sand addition, the optimal half-length of crack is 150 m, setting the seam height within the target layer can avoid layer crossing phenomenon, the injection volume of fracturing fluid is 1070 m3, and the displacement of fracturing fluid is 8 m3/min. Predicting a production capacity of 4.5t/d after fracturing through numerical simulation. The case of prediction shows that, the numerical modeling establishes from this method, can provide a more accurate well yield after crack network fracturing, makes the artificial crack simulation accuracy more higher, and it is of great significant for better guiding the precise development of oil fields.