姬塬油田长9储层特征综合研究

发布时间：2018-06-25 13:38

本文选题：姬塬油田 + 测井解释　；参考：《西安石油大学》2015年硕士论文

【摘要】：姬塬油田始探于1970年,2003年以来,在三叠系延长组中下部油藏勘探获得较大突破。本次研究在收集的地质材料、岩心资料、测井资料、生产动态资料和前人研究成果的基础上,对该区长9油层组进行了系统的地层划分与对比,沉积微相研究,测井资料解释,储层特征等方面的研究,得到了以下结论:(1)研究区长9油层组为三角洲平原沉积体系,物源方向主要来自于东北和西北,长911、长912、长 921、长 922四个小层的砂体展布严格受沉积相控制;(2)研究区长9储层主要以长石岩屑砂岩、岩屑长石砂岩和长石砂岩为主,碎屑成分主要以石英类和长石类为主。砂岩粒度以细为主,分选差,磨圆度中等。有微小孔隙发育,孔隙结构复杂。根据储层特征,建立统一标准将储层分为四类。主要以II、III类为主;(3)利用试油和生产动态信息,提取与产能相关的多种参数分别与试油产量、生产产量进行相关性分析。采用产能系数法,有效厚度和含油饱和度乘积法预测产量,乘积法效果较好;(4)预测有利区17个,1个III类可扩边区。预测有利区面积长921面积32.95 km2,长912面积32.82 km2,长911面积185.12 km2。为姬塬油田今后的开发提供地质依据。
[Abstract]:Jiyuan Oilfield was first explored in 1970 and since 2003, it has made a great breakthrough in the exploration of middle and lower reservoirs of the Yanchang formation of Triassic. On the basis of the geological materials, core data, logging data, production performance data and previous research results, the formation of Chang 9 reservoir in this area has been systematically divided and correlated, sedimentary microfacies studied and log data interpreted. The main conclusions are as follows: (1) the Chang 9 formation in the study area is a delta plain sedimentary system, and the source direction is mainly from northeast and northwest. The distribution of sand bodies in Chang 911, Chang 912, Chang 921 and Chang 922 layers is strictly controlled by sedimentary facies. (2) Chang9 reservoir in the study area is mainly composed of feldspathic sandstone, lithic feldspathic sandstone and feldspathic sandstone, and the main clastic components are quartz and feldspar. Sandstone granularity is mainly fine, sorting is poor, grinding roundness is medium. Tiny pores develop and pore structure is complex. According to the reservoir characteristics, a unified standard is established to divide the reservoir into four categories. (3) based on the information of oil test and production dynamics, a variety of parameters related to production capacity were extracted, respectively, and the correlation analysis was carried out with the oil test output and production yield. The productivity coefficient method, effective thickness and oil saturation product method are used to predict production, and the product method is effective. (4) 17 favorable regions and 1 III extensible border area are predicted. The area of favorable area is 32.95 km ~ 2, area of 912 is 32.82 km ~ 2, and area of 9 / 11 is 185.12 km ~ 2. It provides geological basis for future development of Jiyuan oilfield.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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