A combustion system,with a separated combustion chamber and multiple fuel supply systems in a natural gas engine,is designed based on the stratification combustion theory.

The article discusses earthquake destruct gas system characteristic,mechanism combined with WenChuan earthquake and previous cases about recovery gas supply problems.

Studies on combined supply gas station of biogas and synthesis gas.;

Discussion of deadline for Pay and take gas supply contract;

Based on the introduction and analysis of CNG-diesel dual fuel engine with pre-mixed CNG supply, gas injection and the direct-injection in cylinder, this paper gives the development tendency of CNG-diesel dual fuel engine, that is the combination of natural gas electronically controlled multi-point sequential injection and common-railed diesel injection.

Well test analytical model and pressure characteristics of multizone, non-isopachous and lateral heterogeneous composite gas reservoirs;

Aiming at serious heterogeneity of Sulige Gas Reservoir,this paper constructs a well testing interpretation model for lateral heterogeneous composite gas reservoirs.

Although many composite gas reservoirs have been explored at home and abroad, there are only a few of researches about the behavior of unsteady fluids flow through porous media for composite gas reservoirs.