摘要
Gas reservoirs are located kilometers deep beneath the earth's surface under great earth stresses, including the overburden stress and the horizontal stress. After a well is drilled, the stress condition around the well bore will be changed. During the development, a pressure funnel forms around the hole, with the rock stress redistributed. In this paper, the influence of the earth stress on the gas reservoir development, including the output, the period of the steady output, the recovery and ratio, is researched thoroughly with the theory of reservoir seepage dynamics and clarified with the calculation method. The research shows that the earth stress produces impacts on the development of a gas reservoir when the stress is great.
Gas reservoirs are located kilometers deep beneath the earth's surface under great earth stresses, including the overburden stress and the horizontal stress. After a well is drilled, the stress condition around the well bore will be changed. During the development, a pressure funnel forms around the hole, with the rock stress redistributed. In this paper, the influence of the earth stress on the gas reservoir development, including the output, the period of the steady output, the recovery and ratio, is researched thoroughly with the theory of reservoir seepage dynamics and clarified with the calculation method. The research shows that the earth stress produces impacts on the development of a gas reservoir when the stress is great.
