Research on Productivity for Multi-stage Fracturing of Horizonal Wells

Abstract

Hydraulic fracture technology has been widely used to exploit the tight and low permeability reservoir to enhance well productivity. In this paper, the multi-stage fracturing of horizontal wells productivity model is established based on Green's Function. Varying pattern of productivity can be obtained under the conditions of water flooding. The calculation result shows that production ratio of different fractures are same on the earlier stage by using elastic drive. And the production ratio of fractures increased near by the flooding boundary and decreased far from the flooding boundary in the later stage. The result of the production forecast model of multi-stage fracture of horizontal well with water flooding shown that, even in the condition of water flooding, production of multi-stage fracture horizontal well mainly depend on formation energy.