兴隆台潜山油藏注气开发工程方案研究

发布时间：2018-06-10 16:51

本文选题：潜山油藏 + 工程方案　；参考：《东北石油大学》2017年硕士论文

【摘要】：兴隆台潜山油藏是一个典型的块状裂缝油藏,油层发育良、原油性质优。该油藏开发初期自喷生产效果较好,后期地层能量逐渐下降。潜山油藏仅依靠天然能量开发,由于地层压力下降、产量递减加快,并且还存在底水锥进现象,注水见效不明显。为了迅速补充地层压力,大幅度提高油藏采收率,实现原油稳产的目标,在潜山油藏实施注气开发。结合潜山油藏注气开发油藏方案和相关规范,本文开展潜山油藏注气开发工程方案的研究。本文根据前期开展注氮气和后期开展注天然气不同阶段要求,进行注、采工程两个方面设计研究。从井口压力的计算、油管尺寸的选择、材质的选择和油管强度校核等方面进行了油管优化,确定注气油管;根据管柱要实现的功能确定相应的配套工具;根据油藏方案提供的天然气注入量和井底流压,参考气体流动能量方程、地层平均温度和压缩系数公式,计算出井口注气压力,选择合适的压力等级井口装置实施注气作业。注氮气过渡阶段气举诱喷采油设计时根据生产井情况确定管柱结构和下深;注天然气阶段未受效井实施气举采油设计时,采取建立连续气举井筒模型,计算出产液量,优化气举压力范围,确定气举阀工作压力。再根据注气情况提出了HSE相关要求,以确保施工安全。
[Abstract]:Xinglongtai buried hill reservoir is a typical block fracture reservoir with well-developed reservoirs and excellent crude oil properties. In the early stage of development, the production effect of self-injection is better, and the formation energy decreases gradually in the later stage. The buried hill reservoir only depends on the natural energy development, because the formation pressure drops, the production decreases speed up, and there is the bottom water coning in phenomenon, the water injection effect is not obvious. In order to quickly replenish formation pressure, improve oil recovery and achieve the goal of stable crude oil production, gas injection development is carried out in buried hill reservoir. Combined with the gas injection development scheme and related specifications of buried hill reservoir, the project of gas injection development in buried hill reservoir is studied in this paper. According to the requirements of different stages of nitrogen injection and natural gas injection in the early stage and natural gas injection stage, the design and research of injection and production engineering are carried out in this paper. From the aspects of wellhead pressure calculation, tubing size selection, material selection and tubing strength check, the tubing is optimized to determine the gas injection tubing, and the corresponding matching tools are determined according to the functions to be realized by the tubing string. According to the natural gas injection rate and bottom hole flow pressure provided by the reservoir scheme, the gas flow energy equation, the average formation temperature and the compression coefficient formula, the wellhead gas injection pressure is calculated, and the appropriate pressure grade wellhead device is selected to carry out the gas injection operation. The structure and depth of pipe string are determined according to the conditions of production wells in the design of gas lift induced oil production in the transitional stage of nitrogen injection, and the continuous gas lift wellbore model is established to calculate the amount of liquid produced when the gas lift oil recovery design is carried out in the stage of natural gas injection. Optimize the gas lift pressure range and determine the working pressure of the gas lift valve. According to the gas injection situation, HSE related requirements are put forward to ensure construction safety.
【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】：TE357.7

【参考文献】