高含水期油田剩余油分布研究

对高含水期油田剩余油分布进行研究是油藏晚期开发工作的重要内容,本文从高含水期油藏的渗流特点出发,充分利用试井技术能求取地层径向渗流参数的特点,结合油藏工程学有关原理,提出了研究剩余油分布的新方法,并在双河油田437块进行了精心的试井方案设计、组织实施及油水井试井资料的精细解释,研究了该区块的剩余油分布情况,结果表明,剩余油富集带位于井间一定区域。通过本课题的研究工作,得到了对于高含水开发后期井间剩余油分布规律的新认识,对老油田调整挖潜和三次采油具有重要意义。

RESIDUAL OIL DISTRIBUTION RESEARCH OF HIGH WATER-CUT STAGE IN AN OILFIELD

The research on residual oil distribution of high water cut stage is an important aspect of development strategy for a mature oilfield.According to the fluid flow properties of high water cut stage reservoir,using the radial flowing parameters derived from welltest interpreation and integrating some principles of reservoir engineering,a new method of researching residual oil distrbution is presented in the article.An elaborate welltest project had been designed and carried into execution at 437 block of Shuanghe Oilfield for the study;the transient welltest data of producing well and water injection well had been interpreted.The result shows that the residual oil allocates at a certain area between producing wells and injection wells.The new cognition about the law of residual oil distribution of maturely developed reservoir has been obtained by the research,and it is very important to the adjustment and rooting potential work,and tertiary recovery for high water cut reservoir.