The effects of time variable fracture conductivity on gas production of horizontal well fracturing in natural gas hydrate reservoirs

Abstract

Hydrate reservoirs in the South China Sea belong to muddy silt-type hydrate reservoirs with low permeability. Horizontal well fracturing is one of the main stimulation methods for low-permeability oil and gas reservoirs. For muddy silt-type hydrate reservoirs, the stability and effectiveness of hydraulic fractures may be a severe problem due to poor reservoir cementation, reservoir deformation, and sand production. In this paper, the time variability of fracture conductivity is considered for the first time. According to the