砂岩油田高含水后期变流线精细调整研究

发布时间：2018-04-23 19:33

本文选题：高含水后期 + 优势流场　；参考：《特种油气藏》2017年02期

【摘要】：针对双河油田某区块高含水后期局部区域形成优势流场、注水井注水效率低、油井含水率高、剩余油分布零散、开发调整措施效果差的问题,提出以集合法筛选确定高含水后期剩余油分类标准,定量划分一、二类剩余油的分布区域,并提出高含水后期储层变流线精细注采调整的方法,对该区块储层的流线进行调整,使原始流线旋转一定角度,进而挖潜零散分布剩余油。以该区块WH5-917、WH7-117两个典型井组所在储层区域为例,进行变流线精细注采调整,使流线转向原来未波及或部分波及的储层区域。自2014年12月变流线调整后,水驱至2016年9月,2个井组分别累计增油0.47×10~4、0.57×10~4t,油井平均含水率分别下降1.21%、1.14%,调整效果较明显。研究成果对同类油田优势流场治理以及剩余油挖潜具有一定的指导意义。
[Abstract]:In a certain block of Shuanghe Oilfield, the dominant flow field is formed in the later stage of high water cut, the water injection efficiency of water injection well is low, the water cut of oil well is high, the distribution of remaining oil is scattered, and the effect of development adjustment measures is poor. This paper puts forward a method to determine the classification standard of residual oil in the late stage of high water cut by collecting method, to divide quantitatively the distribution area of one or two kinds of remaining oil, and to put forward the method of fine injection and production adjustment of variable streamline line in the reservoir of late high water cut, and to adjust the flow line of the reservoir in this block. The original streamline is rotated at a certain angle, and the residual oil is distributed by tapping the potential. Taking the reservoir area of two typical well groups WH5-917WH-7-117 in this block as an example, the fine injection-production adjustment with variable streamlines is carried out, which makes the streamline shift to the original unswept or partially swept reservoir area. Since the variable streamline adjustment in December 2014, water flooding to September 2016, two well groups have increased oil production by 0.47 脳 10 ~ (4) + 0.57 脳 10 ~ (4) t respectively, and the average water cut of oil wells has decreased by 1.21 and 1.14, respectively. The adjustment effect is obvious. The research results have certain guiding significance for controlling the dominant flow field and tapping the potential of remaining oil in similar oilfields.
【作者单位】：东北石油大学;中石化河南油田分公司;
【基金】：国家科技重大专项“优势渗流通道识别与表征及控制无效循环技术”(2016ZX0501003-003)
【分类号】：TE343

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