榆树林油田葡萄花油层储层参数精细评价

发布时间：2018-01-14 09:36

本文关键词：榆树林油田葡萄花油层储层参数精细评价　出处：《东北石油大学》2016年硕士论文　论文类型：学位论文

【摘要】：大庆榆树林油田葡萄花油层目前处于开发,勘探及油藏深入评价共同开展的阶段。榆树林油田是以岩性和断块为主的复合性油藏,油层埋藏深度较深,储层砂体规模较小,原油物性差,自然产能底,属特低渗透油田。由于储层物性参数分布情况复杂,导致通过测井手段进行油水层的精确识别出现困难。本论文以榆树林油田葡萄花油层为目标区块,以葡萄花油层的勘探开发需求为前提,针对该油层测井解释符合率低的原因展开研究。在岩石物理分析的基础上,细致归纳各储层物性参数分布规律和油水层分布特征,在其基础上进行各储层参数的计算,进而建立合理的油水层识别图版,提高该地区复杂储层的油水层解释精度。在研究过程中,对储层的孔隙度,渗透率及孔渗参数受泥质含量及钙质含量的分布采用分区域统计的方法进行了细致统计和总结,对泥质含量及钙质含量对测井响应的影响进行了分析。在分析基础上采用多元回归的方法得出了适合该目标区块的参数计算公式。在油水层识别过程中,除对常规油水层分布进行分析之外,对研究区域内出现的低电阻率油层及高电阻率水层的出现原因进行了分析,进一步提高了油水层的识别精度。通过比对全区钙质含量分布,将研究区域分为东北区及西南区,并分区建立了符合率较高的含水饱和度计算方法,最终得出油水层识别图版,解释符合率达到87.93%。
[Abstract]:The Putaohua reservoir in Yushulin Oilfield of Daqing is in the stage of development exploration and reservoir evaluation. Yushulin Oilfield is a complex reservoir with lithology and fault blocks and the depth of reservoir burial is deep. The reservoir sand body is small, the crude oil physical property is poor, the natural productivity bottom, belongs to the extremely low permeability oil field, because of the reservoir physical property parameter distribution situation is complex. It is difficult to identify oil and water layers accurately by logging. This paper takes the Gaohua reservoir in Yushulin Oilfield as the target block, and takes the exploration and development requirements of the Butaohua reservoir as the premise. Based on the petrophysical analysis, the distribution law of physical parameters of reservoir and the distribution characteristics of oil-water layer are summarized in detail. On the basis of the calculation of the reservoir parameters, a reasonable oil-water layer identification chart is established to improve the interpretation accuracy of the complex reservoir in this area. In the process of research, the porosity of the reservoir is studied. The distribution of permeability and pore permeability parameters by mud content and calcium content is analyzed and summarized by using the method of regional statistics. The effects of mud content and calcium content on logging response are analyzed. Based on the analysis, the formula of parameters suitable for the target block is obtained by using multivariate regression method, which is used in the process of oil and water reservoir identification. In addition to the analysis of the distribution of conventional oil-water layers, the causes of the occurrence of low resistivity oil layers and high resistivity water layers in the study area are analyzed. By comparing the distribution of calcium content in the whole area, the study area is divided into northeast region and southwest area, and the method of calculating water saturation with high coincidence rate is established. Finally, the oil and water layer identification plate was obtained, and the interpretation coincidence rate reached 87.93%.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P618.13

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