... stability theories and basic hydraulic fracturing analysis, we review and evaluate various means available to help eliminate or remediate fracturing-related lost circulation. Of particular interest are two limiting cases: Avoidance of fracture initiation in a circular borehole with no defects...

... of propellant fracturing include 1) the pre-fracturing before conventional hydraulic fracturing to reduce the pressure of fracture initiation and the risk of undesirable fracture propagation (halo effect, fracture tortuosity effect, small stress barriers) and 2) the injectivity enhancement, which also may...

... changes during pressurization in two perpendicular directions. During borehole pressurization under anisotropic far-field stresses diametral increase at right angles to the future hydrofrac helped isolate two critical pressures, one at which fracture initiated (well before breakdown) and one at which...

... fracture pattern. fluid modeling hydraulic fracturing equation of state Upstream Oil & Gas Simulation Rock mechanics propagate particle detonation time step numerical simulation stress wave experiment delay time fracture initiation proceedings fracture propagation dynamic...

... ABSTRACT ABSTRACT: Hydraulic fracture initiation and propagation from a cased and perforated wellbore is strongly dependent on the influence of the steel casing, the cement between the casing and the rock, and the strength of the steel-cement and cement-rock interface bonds. 2D and 3D...