Research On Compartmentalization Of Sew-hole Unit And Distribution Character Of Oil And Water Of Ordovician Reservoir In 8th Area Of Tahe Oilfield

The Ordovician reservoir in 8th area of Tahe oilfield is a special carbonate krastic sew-hole reservoir. The krastic holes are the main accumulated space, the sews are the main flowing path. The sews and the holes's shapes are anomalistic, the distribution is randomic, Furthermore, the multiphase accumulation and the complexity of liquid distribution makes it difficult to workout the well partten, the developing plan and develop efficient. So, it is very necessary to recognize the sew-hole body, analyze the connectedness among several wells, compartmentalize the sew-hole unit, study the distribution characters and modes of oil and water. And it is the key point to enhance the development of Ordovician reservoir.Making use of geology, seismic, well drilling, logging, test, core, pressure, fluid, data According to the reservoir developing character, the research has recognized 51 sew-hole bodies, analyzed the connectedness among several wells, compartmentalized 39 sew-hole units, studied the planar and lognitudinal distribution of the oil density and viscosity, the character of viscosity when the temperature changes and researched the planar and lognitudinal distribution of the water and the source of it, studied 5 distribution modes of water and oil, and the factors that control the distribution of water and oil..