本研究目的是利用數值模式研究地下儲氣窖測試井的壓力變化受地層逸漏處或是其他注產氣井之影響，並利用數值模式繪製成典型曲線，可用以分析及監測儲氣窖在注產氣過程中是否受到地層逸漏或其鄰近注產井的影響，及影響程度與範圍。

本研究利用Computer Modelling Group Ltd.（CMG）之IMEX軟體建構涸竭型地層模式與水驅型油層模式，在各模式中分別假設測試井旁邊有生產或注氣井（生產井也可認為是逸漏處），而模擬測試井的暫態壓力變化，以研究測試井旁邊的生產井或注氣井對測試井的暫態壓力影響，將測試井的暫態壓力資料繪製成典型曲線圖，由此可以將壓力受到干擾井生產或注入變化的時間算出，反推干擾井的距離。

本研究繪製出水驅型油層逸漏量偵測與逸漏位置偵測的典型曲線，倘若典型曲線中的壓力微分曲線在靠近地層邊界影響時，會出現V字形的變化，或是在邊界影響後之壓力曲線有所不同的變化時，可推斷該地層有可能受到水驅效應的影響；利用測試井的涸竭型地層的典型曲線圖，配合各個模式中分析所得之干擾井產量與位置偵測的典型曲線，判斷該井是否受到其他生產或注氣井的影響，反推出干擾井或是逸漏點的位置，進行評估與分析。

關鍵字：數值模式；暫態壓力；典型曲線；水驅型；逸漏

The purpose of this study is to use numerical solution to build up type curves and to analyze and monitor the effect, influence and range of leakage or production/injection wells in a gas/oil (storage) reservoir.
Using the program, IMEX, of Computer Modeling Group Ltd. To construct exhaust reservoir model and waterdrive reservoir model, if production/injection can be considered as a leakage point, the effect of the leakage on the transient pressure of the testing well is easy to be observed. The methods are to plot type curves with the simulation pressure data, to recalculate the distance between these influence wells and the testing well.
In this study, we construct type curves for exhaust and waterdrive reservoir with no extra production wells. There is a “V” pattern effected by the reservoir boundary in the dimensionless pressure derivative curves. The reason that causes the “V” pattern may be the strong waterdrive. Also, we build up type curves for exhaust and waterdrive reservoir with one and two production/injection wells. And to use different method to recalculate the distance between the testing and production/injection wells. The calculating results are very close. We provide the suggestions which methods are suitable for our model.

Keyword：numerical solution；transient pressure；type curve；waterdrive；leakage monitoring

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