SN开发区水驱合理注水强度研究

发布时间：2018-06-07 00:17

本文选题：注水强度 + 层间差异　；参考：《东北石油大学》2015年硕士论文

【摘要】：目前DQ油田已经进入水驱开发后期,开采难度越来越大,含水不断上升,产油量逐渐下降。为了适应油田开发的需要,精细注水调整是当务之急,而注水调整的重要参数注水强度目前还没有明确的标准来进行界定,合理的注水强度还需要我们进一步探索。本文通过研究及现场试验,总结出一套合理的注水强度界定方法,有利于提高油田开发水平。结合以往理论研究,探索了确立注水强度的主要影响因素。通过对近几年来水驱注水井各层段的注水状况进行统计、归类,结合理论研究结果,明确了与注水强度相关的主要影响因素,并论证了相关性影响,确定出了各影响因素与注水强度之间的理论公式。在预定规划开发指标的前提下,通过理论研究和现场应用的最佳契合,实现注水强度最合理,按照各油层均匀驱替,注入、产出剖面均匀,油层动用程度最高,注采结构最合理的目的,力争实现最大限度的减缓层间差异,确定出合理注水强度的理论标准。完成细分注水试验区的选定,选择N8区东块作为试验区,通过现场对各类注水层段实施合理注水强度匹配,同时选择了开发条件相似的N8区西块作为对比区,通过对试验前后的开发效果进行对比,并与对比区开发效果对比,评价结果能够全面反映注水强度变化对开发效果的改善情况,验证合理注水强度界限的合理性。通过理论研究和现场验证,确定了水驱各层系的合理的注水强度技术界限。
[Abstract]:At present, DQ oilfield has entered the later stage of water drive development. In order to meet the needs of oilfield development, fine water injection adjustment is an urgent matter. However, there is no clear standard to define the water injection intensity of water injection adjustment, and the reasonable water injection intensity still needs to be further explored. Through research and field test, a set of reasonable water injection intensity definition method is summarized in this paper, which is helpful to improve the level of oilfield development. Combined with previous theoretical studies, the main factors influencing the establishment of water injection intensity are explored. Based on the statistics and classification of the water injection conditions in each interval of the water flooding wells in recent years, the main influencing factors related to the water injection intensity are identified and the correlation effects are demonstrated, combined with the theoretical research results. The theoretical formulas between the influencing factors and the water injection intensity are determined. On the premise of planned development index, through the best agreement of theoretical research and field application, the water injection intensity is the most reasonable, according to the uniform displacement of each reservoir, injection, uniform production profile, the highest degree of oil production, The most reasonable purpose of injection-production structure is to achieve the maximum reduction of the difference between layers and to determine the theoretical standard of reasonable water injection intensity. To complete the selection of subdivision water injection test area, select the east block of N8 area as the experimental area, carry out reasonable water injection intensity matching for all kinds of water injection zones on the spot, and select the western block of N8 area with similar development conditions as the contrast area, at the same time, By comparing the development effect before and after the test, and comparing with the development effect in the contrast area, the evaluation results can reflect the improvement of the development effect by the change of the water injection intensity, and verify the rationality of the reasonable water injection intensity limit. Through theoretical research and field verification, the reasonable technical limits of water flooding intensity are determined.
【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】：TE357.6

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