秦家屯油田SN122块合理井网密度研究

合理井网密度是指导油田初期布井的关键决策参数,它的准确与否,直接影响该块的采收率和经济效益。本文为研究秦家屯油田SN122区块的合理井网密度,考虑到油田低孔低渗油藏特点,应用原油最终采收率与井网密度关系、合理采油速度法、注采平衡法、水驱控制程度与井网密度关系等4种方法计算出该块井网密度,并结合秦家屯油田已开发区块的统计资料对4种方法计算的井网密度进行校正,从而得到合该块的合理井网密度。

Reasonably well spacing density is a critical parameter to direct well locating in the beginning of a oilfield, it＇s correct or not, can directly effect the recovery and economic rate of the oil field. To study the reasonable well spacing density of SN122 block of QinJiatun oilfield, take of the lower permeability reservoir characters, this paper study the well spacing density with four ways, include the relationship between recovery and well spacing density, the reasonable production rate, the injected and produced fluid balance and the relationship between waterflood control level and well spacing density, and adjust the well spacing density which deduced by above four ways associate with the statistics data in the development block of QinJiatun oil field, and proposed the reasonable well spacing density.