Production effect would be improved by selecting different production methods, thus it would raised by selecting rational production methods for improving the ultimate r.

Based on the study of the gas reserve scale and oil-gas distribution for ordinary heavy oil reservoir with gas cap of Cao 31 fault block in Lean oilfield, using reservoir engineering and numerical simulation, optimizing study on development technical limits for oil reservoir with small gas cap including production method, well pattern, waterflooding time is carried out.

Commentary of production method and numerical simulation of natural gas hydrates;

This paper determines the typeof the condensate gas reservoir in Baozhong block andcomprehensively studies its recovery process.

In order to solve the problem of low producing degree of reserves in blockGao 3,rational well pattern is selected by uslng volumetric method, production feature curveand numerical modeling,thus enhancing areal producing degree of reserves; production modefor enhancing vertical producing degree is determined by physical modeling.

Coalbed Methane Reservoir Numerical Simulation and Its Development Scheme;

Based on the experience of gas cap oilfield development at home and abroad,development characteristic and recovery method are discussed,and the differences of a variety of methods during the development are analyzed,which provided experience and reference for reasonable development of the similar oilfield.