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