特种油气藏2017，Vol.24Issue(2)：86-88,164,4.DOI:10.3969/j.issn.1006-6535.2017.02.016
砂岩油田高含水后期变流线精细调整研究
Study on Precise Flooding Direction Adjustment of Sandstone Oilfields in the Late Stage with High Water Cut
摘要
Abstract
A certain block in Shuanghe Oilfield is faced with a series of problems in the late stage with high water cut, such as occurrence of dominant flow field in local areas, low water injection efficiency of water injectors, high water cut of oil producers, scattered distribution of remaining oil and poor effects of development adjustment measures.To solve these problems, it was proposed to adopt the grouping method to screen and determine the classification criteria of remaining oil in the late stage with high water cut and define quantitatively the distribution areas of type I and II remaining oil.A precise injection and production adjustment method was put forward for the flooding direction change of reservoirs in the late stage with high water cut.This method was used to adjust the flooding direction of reservoirs in this block.The original flooding direction was rotated by a certain angle to tap the potential of scattered remaining oil.The reservoirs in which two typical well groups (i.e., WH5-917 and WH7-117) in this block are located were taken as the examples for precise injection and production adjustment, and their flooding directions were turned to the originally unswept or partially swept areas.Water flooding was carried out until September 2016 after the flooding direction was adjusted in December 2014, and the adjustment effects were remarkable.The cumulative oil production of two well groups were 0.47×104t and 0.57×104t, respectively.And the average water cut of oil producers dropped by 1.21% and 1.14%, respectively.The research results can be used as the reference for dominate flow field treatment and remaining oil potential tapping of similar oil fields.关键词
高含水后期/优势流场/剩余油分类标准/变流线/精细注采调整/双河油田Key words
in the late stage with high water cut/dominant flow field/remaining oil classification criteria/flooding direction change/precise injection and production adjustment/Shuanghe Oilfield分类
能源科技引用本文复制引用
柏明星,张志超,李岩,张超..砂岩油田高含水后期变流线精细调整研究[J].特种油气藏,2017,24(2):86-88,164,4.基金项目
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) （2016ZX0501003-003）
