铁匠炉油田沙一段油气成藏条件研究

发布时间：2018-06-09 21:58

  本文选题：铁匠炉油田 + 沙一段　； 参考：《东北石油大学》2017年硕士论文

【摘要】：本文通过对铁匠炉地区大量的测井资料、录井资料、钻井资料等基础资料进行收集以及对国内外文献资料的分析,对铁匠炉地区的储层特征进行了深入细致的研究,识别出铁匠炉地区的优势储层,并对其油气藏的成因及其对储层的影响进行了细致的研究,对铁匠炉地区的储层进行了评价。主要取得了以下结论和认识:(1)通过对研究区沙一段地层进行精细对比与划分,将沙一段划分为沙一上+中和沙一下两个亚段,又将沙一下亚段精确划分为砂岩组级别,即S1下I1、S1下I2、S1下I3,并在平面上展布各个油层组的地层分布特征。(2)通过对铁匠炉地区的沉积相进行分析研究,由于铁匠炉地区在沙一时期接受由北东方向中央凸起的物源沉积,使得多个砂体一起在平面上叠加成片在斜坡带超覆沉积,形成扇三角洲沉积砂体,主要发育扇三角洲前缘亚相,可进一步将扇三角洲前缘亚相划分为河道等4种沉积微相。(3)对已知油气藏进行精细解剖,梳理油气成藏主控因素发现,构造背景控制油藏类型,疏导体系控制分布格局;沉积背景控制油气富集,岩性、物性影响油气成藏;油源条件必不可少,保存条件是成藏关键。通过以上分析我们有以下几点认识:(1)断层和不整合面对油藏的分布起决定性作用,加强对沙一段内部39条断层两侧油源与储层的对接关系研究,以寻找更多的有利区带和目标;(2)通过对南北斜坡带油气成藏特点的仔细对比研究,我们可以总结认为,北段斜坡带主要为“古地貌控砂,物性控油”,南段斜坡带主要为“相带控砂,断层控油”;(3)加强铁匠炉地区沙一到沙三地层研究,虽然目前沙三砂岩油藏发现较少,而从成藏方面来说,应该具备最有利的成藏要素。
[Abstract]:Through collecting a lot of logging data, drilling data and other basic data in the blacksmith furnace area, as well as analyzing the domestic and foreign literature data, this paper makes a thorough and detailed study on the reservoir characteristics in the blacksmith furnace area. The dominant reservoir in the blacksmith furnace area is identified, the origin of the reservoir and its influence on the reservoir are studied in detail, and the reservoir in the blacksmith furnace area is evaluated. The following conclusions and understandings are obtained: (1) by fine correlation and division of the strata of the first member of the sand formation in the study area, the first member of the formation is divided into two subsections, namely, the upper part of the sand and the lower part of the sand, and the submember of the lower part of the sand is accurately divided into sandstones. That is, I _ (1) I _ (1) I _ (1) I _ (2) S _ (1) S _ (1), I _ (2) I _ (3), and distributes the stratigraphic distribution characteristics of each oil formation on the plane. (2) by analyzing the sedimentary facies in the blacksmith furnace area, because the blacksmith furnace area accepted the protruding material deposits from the north to the east in the first stage of the sand, As a result, many sand bodies are superimposed on the plane and superimposed on the slope zone to form fan delta sedimentary sandbodies, which mainly develop fan delta front subfacies. The fan delta front subfacies can be further divided into four sedimentary microfacies, such as river channel, etc.) the known oil and gas reservoirs can be carefully dissected, and the main controlling factors of oil and gas accumulation can be found. The tectonic background controls the reservoir type and the dredge system controls the distribution pattern. Sedimentary background controls oil and gas accumulation, lithology and physical property affect oil and gas accumulation, and oil source condition is indispensable, and preservation condition is the key to reservoir formation. Through the above analysis, we know that the fault and unconformity play a decisive role in the distribution of reservoirs, and strengthen the research on the docking relationship between oil sources and reservoirs on both sides of 39 faults in Shayi formation. In order to find more favorable zones and targets, we can conclude that the northern slope zone is mainly "paleogeomorphic sand control, physical oil control" through careful comparative study of the characteristics of oil and gas accumulation in the north and south slope zones. The slope belt in the south section is mainly composed of "facies belt controlling sand, fault controlling oil" and so on) to strengthen the study of sand 1 to sand 3 stratigraphy in blacksmith furnace area. Although there are few sandstone reservoirs in sand three at present, there should be the most favorable reservoir forming elements in terms of reservoir formation.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13
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本文编号：2000967