直罗油田黄家岭探区延长组长2段储层评价

发布时间：2018-06-11 09:40

  本文选题：直罗油田 + 延长组　； 参考：《西安石油大学》2015年硕士论文

【摘要】：直罗油田黄家岭区位于陕西省富县境内,研究区面积114km2,构造位置属于鄂尔多斯盆地陕北斜坡东南部。从该区试油结果可知长2段试油显示良好,具有较好的勘探开发潜力。本文以沉积岩石学、储层地质学、石油地质学、地球物理测井等相关理论为指导,以目前先进的实验测试手段为依托,应用地质露头、钻井、测井等资料,采取宏观与微观相结合的研究方法,对直罗油田黄家岭区延长组长2段储层特征进行详细研究,取得了一定的成果和认识。通过岩心描述及岩石薄片鉴定,认为长2储层的岩石类型主要为中粒-细粒长石砂岩,碎屑成分主要为石英、长石、岩屑及少量填隙物,填隙物组分主要为绿泥石、伊利石。砂岩的成分成熟度和结构成熟度均较低,分选性中等-好。根据常规物性资料分析,认为长2段为低孔低渗储层,长21平均孔隙度为12.93%,平均渗透率为1.73×10-3μm2;长22段平均孔隙度为13.76%,平均渗透率为2.14×10-3μm2。根据压汞毛管压力测试资料分析,认为长2段储层以小孔细喉为主。研究区成岩作用类型主要为机械压实作用、胶结作用、交代作用、溶蚀作用和破裂作用。根据I/S中的S%、石英加大级别、颗粒接触类型、孔隙类型等指标综合判断认为,研究区长2处于中成岩阶段B期。根据储层分类标准,本文将研究区长2储层分为四类:Ⅰ类优质储层、Ⅱ类中等储层、Ⅲ类差储层、Ⅳ类致密储层,并从多个角度对长2储层进行了对比及评价。
[Abstract]:The Huangjialing area of Zhiluo Oilfield is located in the rich county of Shaanxi Province with an area of 114 km ~ 2. The tectonic position belongs to the southeast of the northern Shaanxi slope in the Ordos Basin. The result of oil test in this area shows that Chang2 oil test is good and has good exploration and development potential. Based on the relevant theories of sedimentary petrology, reservoir geology, petroleum geology, geophysical logging and so on, this paper applies geological outcrop, drilling, logging and other data based on the advanced experimental testing methods. The reservoir characteristics of Yanchang formation 2 member in Huangjialing area of Zhiluo Oilfield are studied in detail by combining macroscopic and microscopic research methods, and some achievements and understandings are obtained. Through core description and thin section identification, it is concluded that the rock types of Chang 2 reservoir are mainly medium-grained and fine-grained feldspar sandstone, and the clastic components are mainly quartz, feldspar, lithic debris and a small amount of interstitial matter, and the main fractions are chlorite and Illite. The composition maturity and structure maturity of sandstone are both low and the sorting ability is medium-good. According to the analysis of conventional physical properties, it is considered that Chang 2 is a low porosity and low permeability reservoir, the average porosity of Chang 21 is 12.93, the average permeability is 1.73 脳 10 ~ (-3) 渭 m ~ (2), the average porosity of Chang 22 is 13.76 and the average permeability is 2.14 脳 10 ~ (-3) 渭 m ~ (2). According to the analysis of pressure test data of mercury injection capillary, it is considered that the reservoir of Chang 2 is mainly composed of small pore and fine throat. The diagenesis types are mainly mechanical compaction, cementation, metasomatism, dissolution and rupture. According to the Synthetical judgement of S / S, quartz increasing grade, particle contact type, pore type and so on, the study area 2 is in the B stage of middle diagenesis. According to the criteria of reservoir classification, this paper divides Chang2 reservoir into four categories: class 鈪，

本文编号：2004799