The Study On Distribution And Extended Development Of The Remaining Oil In Shu 3 Block

The Shu 3 Block is located in the middle section of western slope, the western depression of Liaohe basin, which is one of the main development block of Shuguang Oilfield. The Shu 3 Block is characterized by concentrated oil reserves and complicated geological conditions. For the reservoir geological setting, development situation and existing problems of the study area, a lot of work has been carried out, such as high-resolution isochronous stratigraphic framework, mirofacies and 3D reservoir geology model, dynamic analysis on development data, water-out status, distribution of remaining oil and extended development plans.On the basis of remaining oil distribution in Shu 3 Block, the thesis put forward extended development plans through association analysis of dynamic data and static data, the reasonable measures to tap the potentialities of remaining oil. The following achievements were obtained.(1) By analyzing the development situation, the structural characteristics and reservoir heterogeneity in Shu 3 Block, the main problems existing in oil welldevelopment had been cleared.(2) Guided by the high-resolution sequence stratigraphy, and in company with the information of the lake surface change, identification of the standard layer, sedimentary cycle contrast and hierarchical units, the thesis established high-resolution isochronous stratigraphic framework.(3) The distribution regularities of reservoir sandbody and transgression-regression recycles had been discussed by the means of sedimentary microfacies, reservoir lateral prediction, reservoir modeling and depositional model.(4) The thesis analyzed the water-out status and distribution of remaining oil in the single layer based on the analysis of recovery percent, water-out behavior and the differences of the well logging interpretation with the original after sidetracking wells, and put forward some exploitation measures, adjusting suggestions and corresponding methods for remaining oil were. At the same time, it had been a effect prediction on economic benefit.In conclusion, this research will enhance the production effect of remaining oil in Shu 3 Block. The related results can provide a reference for the development of analogous oilfield in the East China.