Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments

摘要: A method and apparatus for initiating propagating a vertical hydraulic fracture in unconsolidated weakly cemented sediments from single bore hole to control the initiation plane propagation of fracture, enabling greater yield recovery petroleum fluids formation. An injection casing with multiple sections is inserted grouted into hole. foam fluid carrying proppant injected opens dilate formation direction orthogonal required azimuth plane. Propagation controlled by limiting form that stable fracturing during process. The section remains open after providing direct connection between production well bore, permeable filled