富黄探区黄参37井区长6油层地质研究

发布时间：2018-04-21 17:04

本文选题：黄参37井区 + 油层特征　；参考：《西安石油大学》2015年硕士论文

【摘要】：本文以黄陵油区黄参37井区长6油层为研究对象,将长6油层组细分为4个小层,研究了长6油层地层特征、储层特征、油藏特征和研究该区长6油藏的分布情况,为该区下一步开发提供了科学依据。研究成果表明,黄陵油田黄参37井区位于鄂尔多斯盆地陕北斜坡南部,区域构造为一平缓的西倾单斜,略向北西方向倾斜,地层倾角小于1°,千米坡降为6～10m,内部构造简单,局部发育差异压实形成的鼻状构造,圈闭类型属于岩性圈闭；研究区各小层可对比性良好,对比标志特征明显,发育稳定：属于低孔、特低渗透油藏,受沉积相带分布和成岩作用影响,本区长6储层各油层亚组平面非均质性较强。根据岩心资料及沉积微相、砂体、孔隙度、渗透率平面分布图,本区长6各油层亚组孔隙度、渗透率的分布与砂体的分布具有一定的吻合程度,并呈现出一定的方向性。通过敏感性实验,发现该区长6油层主要表现为弱速敏、弱碱敏和弱水敏等特征,敏感性都很弱。该区长6储层物性差,非均质性强,含油性变化也较大,油水分异不明显,无油水界面,储集类型为孔隙型,本区长6油藏为典型的弹性—溶解气驱动岩性油藏。
[Abstract]:In this paper, Chang6 reservoir of Huangshen 37 well in Huangling oil area is taken as the research object, Chang 6 reservoir formation is subdivided into 4 sub-layers, the stratigraphic characteristics, reservoir characteristics, reservoir characteristics and distribution of Chang6 reservoir in Chang6 reservoir are studied. It provides a scientific basis for the further development of this area. The research results show that Huangshen 37 well area in Huangling Oilfield is located in the southern part of northern Shaanxi slope in Ordos Basin. The regional structure is a gentle westward monocline, slightly tilted northwestward, the formation inclination angle is less than 1 掳, the slope is 610m, and the internal structure is simple. The nasal structure formed by differential compaction is developed locally, and the trap type belongs to lithologic trap. Each sublayer in the study area can be compared well, the contrast mark characteristic is obvious, the development is stable: belongs to the low porosity, the extremely low permeability reservoir, Due to the distribution of sedimentary facies and diagenesis, the plane heterogeneity of each subgroup of reservoir Chang 6 in this area is relatively strong. According to the core data, sedimentary microfacies, sand body, porosity and permeability plane distribution map, the porosity and permeability distribution of each oil layer subgroup of Chang 6 in this area are consistent with the distribution of sand body to a certain extent, and show certain directionality. Through the sensitivity experiments, it is found that the Chang-6 oil layer in this area is mainly characterized by weak speed sensitivity, weak alkali sensitivity and weak water sensitivity, and the sensitivity is very weak. Chang 6 reservoir in this area is characterized by poor physical property, strong heterogeneity, large oil content change, no obvious oil-water differentiation, no oil-water interface, pore type reservoir type, and typical elastic-dissolved gas-driven lithologic reservoir in this area.
【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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