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題名 | 鐵砧山儲氣窖擴大注產氣模擬與氣井評估=An Integrated Study of Reservoir Simulation and Well Evaluation for Advanced Upscaling TCS Gas Storage |
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作者姓名(中文) | 曾繼忠; 范振暉; 吳柏裕; 陳大麟; 沈望陸; 范來富; | 書刊名 | 石油季刊 |
卷期 | 49:2 2013.06[民102.06] |
頁次 | 頁17-38 |
分類號 | 457.2 |
關鍵詞 | 儲氣窖; 油氣層模擬; 節點分析; 垂直井; 氣水界面; Gas storage; Reservoir simulation; Nodal analysis; Vertical well; Gas water contact; |
語文 | 中文(Chinese) |
中文摘要 | 本研究主要目的是利用油氣層模擬技術及節點分析方法,評估現階段鐵砧山儲氣窖擴大注儲及產氣,以供應國光電廠、新桃電廠及第五階獨立電廠用氣需求之可行性,並探討鐵砧山儲氣窖擴大注產規模之氣層操作狀況。由研究結果顯示,鐵砧山儲氣窖若欲擴大注產規模、滿足台電公司用氣需求,宜於TCS-37附近高區增設4口垂直井(高傾角定向井),並將生產層設置於TT-1Aa及TT-1Ab砂岩層,以減少墊底氣量及快速出水風險。其次,建議氣層平均靜壓於2018年前約需維持至2,650 psi以上(Cross Flow),新增垂直井單井產能則可達0.60 MMscm/D。另2018年以後在每週注產平衡操作模式下,長期氣層壓力會因水侵來回作用,壓力會緩慢逐漸上升,雖有利提高產率但氣層範圍亦會受水侵影響逐漸縮小,惟以目前20年注儲模擬結果顯示仍可維持正常操作,且日產水量遠小於礦場可處理能量之範圍。此外為減緩水侵影響時間,新增4口垂直井,位於構造較低之TCS-C2與TCS-C4應以注氣為主;構造較高之TCS-C1與TCS-C3則以產氣為主。現有注產氣井,TCS-A1及TCS-B3因位於構造較低區,以注氣為主;TCS-A3及TCS-B2因位於構造較高區,以產氣為主。 |
英文摘要 | In order to meet the fast growing natural gas demand and to accommodate the offset of peak and off-peak hour consumption of the gas-fired power plants, CPC started a small scale underground gas storage operation since 1990. As the market demand pattern gradually changed over the years it was planed to upscale the storage and production capacity of the facility. Therefore, the aims of this study are: (1) to determine how many new wells and what kind of new wells need to be drilled, (2) to suggest where the new wells should be positioned, (3) to evaluate how much is the capacity of the newly drilled single well and (4) to simulate the weekly balance operation of gas storage and production for TCS gas storage in the future. The result showed that four new vertical wells should be placed near the TCS-37 with perforation interval between the top of TT-1Aa and bottom of TT-1Ab to reduce the required cushion gas and the risk of quick water out. In addition, the production rate of single well is estimated to reach 0.6 MMscm/D by nodal analysis if the average reservoir pressure could maintain above 2,650 psi before weekly balance operation kick-off in 2018. Finally, the simulation showed that there will still be some water out even under the weekly balance operation due to the water drive. However, it is able to maintain a normal operation for 20 years until 2038. To minimize the risk of heavy water out, it is suggested that TCS-C2 and TCS-C4 as well as TCS-A1 and TCS-B3 located at the down dip can be used as the main injectors, whereas TCS-C1 and TCS-C3 along with TCS-A3 and TCS-B2 located at the structure high to be the main producers. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。