Application of Simulated Annealing Algorithm to the Optimization of the Fracturing, Injection and Production System
模拟退火算法在压注采系统优化中的应用

It is difficulty to optimize the fracturing, injection and production system (FIPS) by conventional optimal methods because it is a nonlinear and complicated system including three key sectors, hydraulic fracturing, water injection and oil production in the development of low permeability reservoirs. Methods for optimizing the FIPS using the simulated annealing algorithm (SA) are presented. SA is a global optimal method and independent on the selection of the initial points. Especially for the FIPS itself involving larger numerical calculations, SA demonstrates the priority of direct search. The results show that SA can solve the global optimization of nonlinear problems for the FIPS effectively. The optimum matching relationship among fracturing, injection and production is obtained. The technical and economical integration for hydraulic fracturing, water injection and oil production is achieved. A reliable theory is provided for improving the integral profits for the development of low permeability reservoirs.