Types and exploration prospects of palaeo-geomorphic reservoirs in central Ordos Basin
A major breakthrough has been made in the Jurassic reservoir in the central Or-dos Basin.Based on the study of regional geological background,the reservoir formation model is determined by analyzing the characteristics of the reservoir in the study area.The principle of prediction and screening of the favorable area is established to evaluate and forecast the favorable area.The results show that based on the analysis of reservoir charac-teristics of different strata and different well areas in the study area,it is found that the dom-inant factors of Jurassic reservoirs in this area are structural factors.There are four types of palaeo-geomorphic units in the study area,slope,river hill,ancient river and highland.Ac-cording to the selection principle of"tectonic high point of slope belt,tectonic high point of ancient river and favorable aggregation unit in ancient highland",the classification standard of favorable areas is established,and the favorable areas of Fuxian formation,Yan 10 and Yan 9 in the study area are predicted respectively.
palaeo-geomorphicreservoir characteristicsreservoir forming modelfavor able area prediction