本文選題：底水氣藏　切入點：水侵動態(tài)　出處：《西南石油大學》2015年碩士論文　論文類型：學位論文

【摘要】：CL氣田YCZ火山巖氣藏,底水能量強、裂縫發(fā)育、CO2含量高、單井產(chǎn)能及控制儲量差異大,開發(fā)中需解決水侵動態(tài)規(guī)律研究、控制儲量核實、合理配產(chǎn)的難題。本文旨在通過對氣井生產(chǎn)動態(tài)、氣藏壓力變化情況以及氣井產(chǎn)能的研究,結合氣藏數(shù)值模擬,分析氣藏水侵方向及氣水界面變化情況,提出氣田開發(fā)的合理化建議,為氣藏的高產(chǎn)穩(wěn)產(chǎn)提供指導。主要研究內(nèi)容如下： (1)制定了YCZ氣藏凝析水和地層水的判別標準,將氣井分為產(chǎn)凝析水氣井、產(chǎn)地層水氣井、有出液跡象氣井三類,分析了不同類型氣井的生產(chǎn)動態(tài)特征。 (2)研究了氣井的水侵動態(tài)特征和水侵模式,結合氣藏數(shù)值模擬,給出了氣藏的水侵方向,并預測了當前氣水界面。 (3)在Everdingen-Hurst模型的基礎上,建立并求解了均質(zhì)層狀底水氣藏水侵模型和雙重介質(zhì)邊水氣藏水侵模型。同時,還研究了相關參數(shù)對無因次水侵量曲線的影響。 (4)對水驅(qū)氣藏物質(zhì)平衡方程進行了改進,提出了利用改進物質(zhì)平衡法計算氣藏水侵量的方法。利用水驅(qū)指數(shù)和水體倍數(shù)對水體能量進行了評價。 (5)采用多種方法預測了氣藏目前的平均地層壓力,計算了各氣井的控制儲量。 (6)對YCZ氣井的產(chǎn)能試井資料進行了解釋,預測了當前氣井的無阻流量,并對氣井進行了合理配產(chǎn)。
[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.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE37

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