Comprehensive Analysis Of Ansai Oilfield Wangyao CHANG6 Test Data

There are two difficult problems for well test technology in low permeability reservoir, one is limitation in using some well test technology caused by physical properties, another is that there are broader development space to improve the precision of well test, but it is more difficult. For the two problems,There are badly in need of sdudy in following three aspects:one is improving the well test technology of injection profile and production profile in low permeability reservoir. The next is improving the interpretation precision of the remaining oil prediction technology. Another is that well test technology should aim at complex well and multiphase medium and should be single integration and wellbore for formations and generality for layering on the base of practicality and low cost and advancement.Wangyao Area of Ansai Oilfield is located in the tectonic zone of Shanbei Slope of the Ordos Basin. With the developmeng of the oilfield, there are a series of general problems, such as:poor injection, poor development effects and low recovery ratio.In this paper, combining some dynamic monitor technologies and reservoir engineering and core analysis, comprehensive analysis methold of well test will be studied with well test data and its reflection on formation and dynamic characteristics. Reconsidering geology law and the percolation law and fracture development and distribution law by this methold, as well as the development dada, The main factors that affect the the remaining oil distribution on plan and profile will be studied. These will give a basis for potential tapping of low permeability reservoir in high water content period.