| After 30 years of exploration and exploitation,block qi2-16-8 has entered a high water-cut stage,and it become more difficult to stabilize the production. As an important part of method to make up production decline, Capacity building is also facing many difficulties such as difficulties of further adjustment in old areas, new reserves shortage, complex built block geological conditions,and the situation is grim. Qi2-16-8 block is a low permeability reservoir whit an oil bearing area of 5.73Km2,geological reserve of 465.94×104t,recovery of 19.2% which is not too high. In order to improve the development effect of the block and improve the ultimate recovery,we must carry on fine analysis and tap the potential of reservoir further. We have carried out researches on fine description of geologic body by means of “combination of well and seismicâ€, implemented accurate faults location and micro structure of small layer, Drawn the sedimentary microfacies distribution map, recalculated block geological reserve, analysed relationships of capacity and seismic amplitude attributes, built Capacity prediction plates, analysed properties of water rejection stage, reservoir change regulations and residual oil distribution regulation of block qi2-16-8 in natural energy development stage by Using well production data and oil saturation of new wells, high pressure properties, core experiment data, through statistical method, drawing method and numerical simulation method on the basis of researches on reservoir geologic properties. Through comprehensive research we realized that the block of Qigu20 and Qi2-16-09 in block Qi2-16-8 was highly implemented, which has a high predictable productivity and enrich remaining oil,and is feasible of well deployment. On the basis of the above researches, we optimized designment of extending deployment in block Qi2-16-8 and will deploy a total of 3 wells which will improve the development effect of the block. |
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