三塘湖盆地牛东区块上石炭统卡拉岗组(C_2k)油藏为吐哈油田首次发现的裂缝—孔隙型火山岩油藏,其产量变化大、递减快,生产状况极不稳定。对于这种产量递减快,生产状况极不稳定的井,如何评价其产能难度非常大。深入研究确定单井产能,对于制定合理开发技术政策,实现科学高效开发具有十分重要的指导意义。这里采用两种方法计算油井产能,方法一是利用油井递减规律,确定油井初始产量和年平均日产量的关系,通过计算油井年产量求取油井年平均日产量,用油井年平均日产量作为油井单井产能;另外一种方法就是利用典型井的米采油指数法计算油井单井产能。 The Upper Carboniferous Cretaceous (C_2k) reservoir in Niudong block in Santanghu Basin is the fractured-pore type volcanic reservoir first discovered in Tuha Oilfield. Its production varies greatly, decreases rapidly and the production status is extremely unstable. It is very difficult to evaluate production capacity for such wells that produce less and less productive output. In-depth study to determine single-well productivity, for the development of a reasonable development of technology policies, to achieve scientific and efficient development of great significance in guiding. Here are two ways to calculate the production capacity of oil wells, the first method is to use the law of decreasing wells to determine the initial production of oil wells and the annual average daily output, by calculating the annual output of oil wells to find the annual average daily output, annual average oil well production wells Single-well production capacity; another method is to use the typical well meter oil production index calculation single-well production capacity.