A conventional oil and gas well does not have a natural production capacity, which necessitates hydraulic fracturing operation. The effectiveness of the directly impacts economic benefit single well. Among various parameters, including fracture spacing, width, conductivity, half-length is one main influencing factors on productivity horizontal wells. For homogeneous reservoirs, research mainly ...

recognition of relationship between the present day stress state and fractures is very important in fractured reservoirs. fractures that are parallel or oblique to maximum horizontal stress have more tendencies to tensile deformation and tensile deformed fractures will be more permeable. the dalan formation is one of the main gas reservoirs of iran witch most of the production from this formati...

gravity drainage is one of the important recovery mechanisms in fractured carbonate and conventional reservoirs. it occurs due to density difference between the gas in fracture and the oil in matrix as well as in conventional tilted reservoirs. oil phase will form films which are produced under gravity forces (film flow). many gas injection experiments have been done on laboratory scales with d...

To better evaluate the spatial steering effect of directional perforation hydraulic fractures, evaluation indexes for are first proposed in this paper. Then, these used to quantitatively existing physical experimental results. Finally, with help RFPA 2D -Flow software, influence length and azimuth on process fracture analysed using four indexes. It is shown by results that deflection trajectory...