H油田毛家河油区油藏描述

发布时间：2018-04-19 14:13

本文选题：毛家河油区 + 储层地质特征　；参考：《西安石油大学》2015年硕士论文

【摘要】：H油田毛家河油区位于鄂尔多斯盆地陕北斜坡上,主力储层为三叠系延长组长4+5和长6油层组。本次研究在测井、录井、薄片资料、扫描电镜和实验测试等静态资料的基础上结合试油试采成果对研究区的储层地质特征和油藏特征深入分析,建立三维地质模型,为油田下一步的勘探开发提供地质依据。将研究区长4+5和长6油层组划分为长4+5上、长4+5下、长61、长62、长63和长64六个油层亚组进行分析。研究区主要的构造形态为西倾单斜构造,局部有小型鼻隆、小背斜、小向斜、小洼地等微构造;沉积类型为三角洲平原亚相沉积,包括水上分流河道、河道侧缘和分流间洼三种微相;主要岩性为细粒长石砂岩,低孔-低渗到特低孔-特低渗储层,孔隙类型主要为粒间孔和溶孔,储层敏感性具有“两弱-四中”的特点,中等非均质性,研究区裂缝方向以北东与北西方向为主,裂缝角度在40~75°;油气分布主要受储层岩性和物性控制,油藏为弹性-溶解气驱岩性油藏。在以上研究的基础上建立研究区测井解释模型和有效厚度下限标准,并利用容积法计算储量为763.1×104t,溶解气11446.0×104m3。根据研究区储层地质特征和油藏特征选用随机模拟方法建立符合研究区实际情况的三角洲储层骨架及其物性参数地质模型。
[Abstract]:The Maojiahe oil area of H oilfield is located on the northern Shaanxi slope of Ordos Basin, and the main reservoir is the formation of Yanchang 45 and Chang 6 of the Triassic Yanchang formation.On the basis of static data, such as logging, logging, thin slice data, scanning electron microscope and experimental test and production test, this study deeply analyzed the reservoir geological characteristics and reservoir characteristics of the study area, and established a three-dimensional geological model.To provide geological basis for the next exploration and development of oil fields.The Chang 45 and Chang 6 reservoirs in the study area were divided into 6 subgroups of Chang 45, Chang 45, Chang 61, Chang 62, Chang 63 and Chang 64.The main structural form of the study area is westward tilting monoclinal structure with small nasal uplift, small anticline, small syncline, small depression and other microstructures, and the sedimentary type is delta plain subfacies, including water distributary channel.The main lithology is fine feldspathic sandstone, low porosity and low permeability to very low porosity and very low permeability reservoir, the pore type is mainly intergranular pore and solution pore, and the reservoir sensitivity is characterized by "two weak and four middle".The fracture angle is 4075 掳, the distribution of oil and gas is mainly controlled by reservoir lithology and physical property, and the reservoir is elastic-dissolved gas drive lithologic reservoir.On the basis of the above research, the logging interpretation model and the lower effective thickness standard are established, and the reserves are 763.1 脳 10 ~ 4 t and the dissolved gas is 11446.0 脳 10 ~ 4 m ~ 3 by volume method.According to the reservoir geological characteristics and reservoir characteristics in the study area, a geological model of delta reservoir skeleton and its physical properties parameters is established by using stochastic simulation method.
【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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