海上油田优势水流通道模糊综合识别模型

发布时间：2018-01-10 08:18

本文关键词：海上油田优势水流通道模糊综合识别模型　出处：《断块油气田》2017年01期 　论文类型：期刊论文

【摘要】：海上油田由于天然的非均质性和强注强采的开采特点,部分油水井间会形成优势水流通道,导致注入水波及系数降低,影响采收率。为了改善开发效果,必须采取调剖堵水等措施,措施的关键是有效识别优势水流通道。建立优势水流通道模糊综合识别模型,首先筛选发育优势水流通道的井组,然后确定优势水流通道在井组内的发育方向,最后利用聚类方法确定其发育层位。根据综合评分的大小,确定优势水流通道的发育程度,并定义其发育类型。文中采用的方法有针对性地分层次识别优势水流通道,避免了识别的盲目性,减少了识别的工作量。将该识别方法利用VB编制了软件,并应用于现场。对比模糊综合识别模型的识别结果与现场测试结果发现,符合率大于80%,说明该方法可靠实用。
[Abstract]:Offshore oil field because of mining heterogeneity in natural and forced injection, part of oil wells can be formed between the advantages of the water channel, leading into the waves and the influence coefficient decreased and recovery. In order to improve the development effect, we must take measures such as water plugging and profile control measures, the key is to identify dominant water channel. To build the advantage of water channel fuzzy comprehensive recognition model, wells group first screening development flow channels and advantage, determine the development direction in the well group the advantages of the water channel, finally determine the development of the clustering method. According to the comprehensive score of the size, determine the development degree of dominant flow channels, and define the type of development. The method used in this paper are in view of the hierarchical recognition advantage of water channel, avoid blind identification, reduce the recognition workload. The recognition method is compiled by using VB software, and applied to the present It is found that the coincidence rate is more than 80%, which shows that the method is reliable and practical.

【作者单位】：中国石油大学(北京)石油工程教育部重点实验室;
【基金】：国家自然科学基金项目“各向异性裂缝页岩气藏渗流机理与理论研究”(51374222) 国家科技重大专项课题“中东典型碳酸盐岩油藏开发规律及技术政策研究”(2016ZX05032005-002);“基于各向异性的特低渗透油藏井网优化与注采调控技术研究”(2016ZX05013002-001) 国家重点基础研究发展计划(973计划)项目“陆相致密油高效开发基础研究”(2015CB250900)
【分类号】：TE53
【正文快照】： 0引言相比陆上油田,海上油田储层物性较好,一般为疏松砂岩油藏。由于其强注强采的开发特点,油藏容易出砂、孔喉增大,部分油水井间会形成优势水流通道,导致注入水无效循环。因此,识别发育优势水流通道的井组及方向对调剖堵水等措施有很重要的指导意义。目前,识别优势水流通道

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