【摘要】 牛东油田C2k裂缝-孔洞型火山岩油藏单井产量变化大、递减快,生产状况极不稳定,评价其单井产能难度大.采用2种方法计算牛东油田火山岩油藏油井产能:一是用油井年平均日产量作为油井单井产能,该方法采用油井递减规律求取油井年平均日产量,然后分析油井初始产量和年平均日产量的关系,这样生产时间较短的井资料也可应用于油井产能研究中;二是利用典型井的米采油指数法计算油井单井产能.结果表明:第一种方法能够应用全部已投产井的生产数据,具有较高的代表性和准确性.更多还原

【Abstract】 The reservoir of Carboniferous Kalagang formation in Niudong oilfield is a fracture-porosity volcanic reservoir,with the characteristics of obvious variation and dramatic decline in production as well as unstable producing situation.It was difficult to evaluate its single well productivity.Here,two methods are adopted to evaluate the well productivity.One method used the annual average daily output of oil wells as a single well production capacity,which was representative and accurate with the application of all production data.It was the first time to acquire the average daily output of oil wells by the use of decline laws.Then the relation between original output and the annual average daily output of oil wells would be studied.As a result,the well data with short production time of oil wells can be used to study oil well productivity.The other method used well productivity index method of typical wells to calculate single well productivity.更多还原