CL气田生产动态研究

发布时间：2018-03-10 21:30

本文选题：底水气藏　切入点：水侵动态　出处：《西南石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：CL气田YCZ火山岩气藏,底水能量强、裂缝发育、CO2含量高、单井产能及控制储量差异大,开发中需解决水侵动态规律研究、控制储量核实、合理配产的难题。本文旨在通过对气井生产动态、气藏压力变化情况以及气井产能的研究,结合气藏数值模拟,分析气藏水侵方向及气水界面变化情况,提出气田开发的合理化建议,为气藏的高产稳产提供指导。主要研究内容如下： (1)制定了YCZ气藏凝析水和地层水的判别标准,将气井分为产凝析水气井、产地层水气井、有出液迹象气井三类,分析了不同类型气井的生产动态特征。 (2)研究了气井的水侵动态特征和水侵模式,结合气藏数值模拟,给出了气藏的水侵方向,并预测了当前气水界面。 (3)在Everdingen-Hurst模型的基础上,建立并求解了均质层状底水气藏水侵模型和双重介质边水气藏水侵模型。同时,还研究了相关参数对无因次水侵量曲线的影响。 (4)对水驱气藏物质平衡方程进行了改进,提出了利用改进物质平衡法计算气藏水侵量的方法。利用水驱指数和水体倍数对水体能量进行了评价。 (5)采用多种方法预测了气藏目前的平均地层压力,计算了各气井的控制储量。 (6)对YCZ气井的产能试井资料进行了解释,预测了当前气井的无阻流量,并对气井进行了合理配产。
[Abstract]:YCZ volcanic gas reservoir in CL gas field has strong bottom water energy, high CO _ 2 content in fracture development, great difference in single well productivity and controlled reserves. The purpose of this paper is to analyze the direction of water invasion and the change of gas-water interface by studying the production performance of gas well, the pressure change of gas reservoir and the productivity of gas well, combined with numerical simulation of gas reservoir. The rational suggestion of gas field development is put forward to provide guidance for high and stable production of gas reservoir. The main research contents are as follows:. 1) the distinguishing standard of condensate water and formation water in YCZ gas reservoir is established. The gas wells are divided into condensate gas wells, reservoir water gas wells and liquid producing gas wells. The production characteristics of different types of gas wells are analyzed. 2) the characteristics and model of water invasion in gas wells are studied. Combined with the numerical simulation of gas reservoirs, the direction of water invasion of gas reservoirs is given, and the current gas-water interface is predicted. 3) based on the Everdingen-Hurst model, the water invasion model of homogeneous stratified bottom water reservoir and the water invasion model of water vapor reservoir with double media edge are established and solved, and the influence of relevant parameters on dimensionless water invasion curve is also studied. (4) the material balance equation of water drive gas reservoir is improved, and the method of calculating the water invasion of gas reservoir by using the improved material balance method is put forward, and the water body energy is evaluated by using water drive index and water body multiple. 5) the average formation pressure of gas reservoir is predicted by various methods, and the controlled reserves of each gas well are calculated. The productivity test data of YCZ gas well are interpreted, the unobstructed flow rate of current gas well is forecasted, and the reasonable distribution of gas well is carried out.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE37

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