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利用多层二维二相模型,在充分进行历史拟合的基础上,搞清地下油水分布规律,对特低渗透油藏开发中出现的问题做了详细的研究。通过研究,选择了樊29块最佳开发方式为:转注两口井,提液到450t/d,采用波动注水,强度保持在50%,注采比为093~097,注水周期为15天左右。1997年底应用数模研究成果实施一年来,日产油量上升52t,含水上升率从1203%下降到184%,综合递减由202%下降到0,压力保持稳定,年增油11×104t
Based on the full historical matching, the distribution rule of underground oil and water is studied by using multi-layer two-dimensional two-phase model, and the problems in the development of ultra-low permeability reservoirs are studied in detail. Through the research, we chose the best development way of Fan 29 as follows: pouring two wells, extracting liquid to 450t / d, using fluctuating water injection, the intensity is maintained at 50%, the injection-production ratio is 093 ~ 097, 15 days or so. At the end of 1997, the application of numerical simulation research results implemented a year, the daily output rose 5 2t, water cut rate decreased from 1203% to 184%, the comprehensive decrease from 20 2% down to 0, the pressure remained stable, the year Increased oil 1 1 × 104t