... representation by the theory of graphs and the use of the maximal flow with minimal costs algorithm is developed. Results to Algerian gas network will be given. Introduction The natural gas is revealed to have number of trumps that confers him a major place in all scripts of forecasting energical demand...

... is scissa 5 0 TO = - then 1 rather small, if compared to the leng hydraulic fracturing fracture wall approximation rupture liquid rupture graph Upstream Oil & Gas fracture vertical fracture contour formulae injection equation relation APW liquid injection configuration drilling...