The Dabei gas field

with the complex geological structure

the developed faults and fractures and the low matrix porosity and permeability

has the characteristics of high temperature and pressure

and strong heterogeneity. Under these complicated geological conditions

the reservoir characteristics are poorly described by the analytical well test with limitation. Based on the static data of the structure

the fault

the well pattern and the well logging data

the numerical well test geological model with the complex irregular boundary closed to the actual condition was established

the seepage model was established by the production data of the gas production wells

and the unstructured Voronoi mesh was generated and discrete. Meanwhile

by considering the influences of the interference from the adjacent wells

the reservoir physical property parameters revision

and the fault sealing property alteration

the numerical well test model comformed to the actual condition of the well block Dabei-102 was proposed. The result showed that

through the first research and the application of the numerical well test technologies in this block

the numerical well test analysis and the interpretation can exactly describe the feature of the pressure changes during the development of the gas reservoir in time and space

solve the problems of the communication

the fault sealing property and the interference of the inter wells in well block Dabei-102

and further deepen the understanding of the gas reservoirs. The research result helps for the production of the gas wells in well block Dabei-102.