Research On Injection-production System In Jilin Low Permeable Reservoirs

In this paper, with typical low-permeability oil field about xinli, Xinmin, bamiantai, Honggang North ,Daqingzijing, qianan, etc, which are goal block for the study area. Based on having been developed the oil fields, the system of appropriate injection-production pressure is studied by maintaining the pressure of different strata and the flow pressure. Successful experience was compressively analyzed on adaptive pattern in the research. In the existing well pattern, the technical study was carried out to improve pattern, the center of which is improving the efficiency of water flooding. The relation between the well spacing density and recovery about Jilin low permeability oilfields was established, which provides the technical support for low-permeability oil field development in Jilin and adjusting the density of the wells. Laboratory experimental on the relation of threshold pressure gradient, permeability and viscosity was used, and threshold pressure which was calculated according to well logging data was amended, it was applied to field for studying reasonable distance of the injection-production and analyze the adaptive pattern.The results was compressively applied in low permeability oilfield,such as Jilin Li, Xinmin, xinmiao, Daqingzijing,qianan, Honggang North and so on,but also received good results. Research result has a great significance for guiding the development and the old potential new area in the new area of low permeability reservoir.