新立Ⅲ区块精细水驱及深部调驱方案优化

发布时间：2018-04-19 08:17

本文选题：低渗透 + 水驱　；参考：《东北石油大学》2015年硕士论文

【摘要】：吉林油田低渗透油藏潜力巨大,且多数已进入高含水开发阶段,无效水循环严重,开发矛盾突出,在股份公司大力支持下,按照完善水驱、改善水驱、转换驱替方式“三步走”整体工作部署,改善水驱是现阶段工作重点,深部调驱技术是其关键-方向性工程技术,因此,在新立油田最早开发的主体区块开展调驱新技术试验具有重要的现实意义。通过筛选合理的注入剂体系(采用尺寸在纳米到微米范围的微球体系),并配合加入驱油剂,进一步扩大注水波及体积和提高洗油效率,进一步解决储层深部驱替非均质的问题,即物性差异的问题,从而最终实现二次开发的较大幅度提高水驱采收率和改善水驱开发效果的目标。本文针对油田开发目前面临的形势及问题,确定调驱试验区的选择依据,进而进行试验区的区块优选以及调驱单井层位优选,最终确定单井注入层段及注入量,确定空白水驱方案。通过优势通道识别的认识,建立调驱体系的优选及优化设计。通过阶段试验的效果来看,调驱试验取得巨大成功,这不但将为新立油田二次开发探索进一步提高采收率的技术方法,同时也为吉林油田类似区块高含水期的深化挖潜提高开发水平探索有效的技术途径。
[Abstract]:The potential of low permeability reservoirs in Jilin Oilfield is huge, and most of them have entered the stage of high water cut development. The invalid water circulation is serious and the development contradiction is prominent. Under the support of the joint stock company, it is necessary to perfect water flooding and improve water flooding.The "three step" integral work arrangement of changing displacement mode and the improvement of water drive are the key work at this stage, and the deep displacement technology is its key-directional engineering technology, so,It is of great practical significance to test the new technology of oil flooding in the main block of Xinli Oilfield.By screening reasonable injectant system (adopting microsphere system with size from nanometer to micron, and adding oil displacement agent, the water injection sweep volume and oil washing efficiency are further expanded, and the problem of heterogeneous displacement in deep reservoir is further solved.That is, the problem of physical property difference, so as to achieve the goal of increasing the recovery efficiency of water drive and improving the effect of water drive development.In view of the situation and problems faced by oilfield development at present, this paper determines the basis for selecting the pilot area for oil flooding, and then optimizes the block selection and single well interval selection in the test area, and finally determines the injection zone and injection rate of single well.Determine the blank water drive scheme.Based on the recognition of dominant channel, the optimal selection and design of the control and flooding system are established.According to the effect of the stage test, the control and drive test has achieved great success, which will not only explore the technical methods to further improve the recovery factor for the secondary development of Xinli Oilfield,At the same time, an effective technical approach is explored for the deepening of high water cut period in similar blocks in Jilin Oilfield and the improvement of development level.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE348

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