The Development Dynamic State Characteristic Research Of Tahe 4th Area Oil Field

The Ordovician reservoir of Tahe 4 area oilfield which buried deeply is a representative in carbonate rock container which has the characteristic of high anisotropic fractured vuggy type in the Tahe carbonate reservoir. Because water ratio arises, the yield production decrease is hudge, the oil recovery is lower. Therefore, how to raise the oil recovery need some base studying.So far as the Tahe oil-field 4th area Ordovician reservoir is concerned, the main research concludes: the study of vatiety of stratum pressure, characteristic of water flood and the variety regulation of water ratio of the oil well , the regulation of productivity variety and decrease progressively for the geologic strata pressure and its effecting factors research. Through these research, analyze the mechanism of water flood and water ratio arising, made it clear that the regulation of water and oil flowing in different formation , the reason of the system clearify various effecting factors and its function of water ratio arising, finally build up the different relation between water and oil and the mode of water ratio arising. Analyzed and predicted quit flowing time, containing water and flowing pressure of dissimilarity fractured vuggy unit and different type oil well etc. Studied and predicted the threshold of minimal flowing pressure and formation pressure under the condition of exhausted production in different formation. Summarized production decrease regulation of oil well of each fractured vuggy unit unit at the different development stage; Analyzed the main effecting factors of production decrease regulation, and study the function relationship of each effecting factors.Through the four research of the area development dynamic characteristics to the Tahe, put forward that oilfield to head the measure implement direction of the direction in analysis steadily producing applied resul. the measure of boost production. We formed a main measure to stop water ratio from rising, such as inject water and press an awl and block up a water further etc. It also have an exaltation on the dynamic means and method, for the other similar reservoir to Tahe oilfield , which can use this analyzing method in development. The research method can also be applied in the research of the simile oilfield.