Extra high water cut has been the main development stage of bottom⁃water reservoir, due to water cut highly with great escalating rate in the initial. At present, the relative permeability curve endpoint has become a serious distortion. This paper presents a method to calculate the performance of water cresting with two phases flowing using the streamlines theory, good for solving the existing problems in the common method, as no pertinence, ineffectiveness and less affecting factors considered. Meanwhile, optimized relative permeability curve was calculated based on the research coupling genetic algorithm with bottom⁃water drive model. The result of numerical calculation based on optimized relative permeability curve showed that the histogram of technical reserves was matched basically with the real practice. This research could provide some instructional meaning to the application of dynamic prediction and developing the oilfield in bottom⁃water reservoir.

Because of the lower activity of higher olefins in aqueous／organic biphasic catalysis system and the catalyst
separation of homogeneous catalysts ，ultrafine SiO₂ nanoparticles were used as supports to immobilize amphiphilic phosphine －
complex to obtain supported catalysts for hydroformylation of 1 － hexene ．Compared to the supported aqueous － phase catalysts
（SAPC） on ultrafine SiO_２ support ，the ultrafine SiO₂ － supported catalyst with amphiphilic phosphine － complex presented a
higher hydroformylation performance over a relatively wider range of support hydration ．Since the water was distilled to organic
phase for more times recycled catalysts ，the drawbacks of ultrafine SiO_２ supported water － soluble phosphine － Rh complexes
catalyst could be avoided by using supported liquid － phase catalyst prepared by using amphiphilic phosphine － Rh complexes ，
obtaining higher activity and selectivity of hydroformylation ．