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題 名 | 鐵砧山注/產氣井井口分離器之操作溫度預測=The Operational Temperature Prediction of the Well Site Separator in the Injection/Production Wells |
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作 者 | 范振暉; 吳健一; 黃瑞鴻; 廖慶有; | 書刊名 | 石油季刊 |
卷 期 | 34:1 1998.03[民87.03] |
頁 次 | 頁1-10 |
分類號 | 457.8 |
關鍵詞 | 液化天然氣; 地下儲氣窖; 分離器; 節流嘴; 水化物; Natural gas; Underground gas storage; Separator; Cooling and heating facility; |
語 文 | 中文(Chinese) |
中文摘要 | 近年來由於國內對於天然氣之需求日盛,而自產量卻逐年遞減,因此乃從國外進 口液化天然氣( LNG ),以便使民生及工業所需無匱乏之虞。 為了調節北部地區尖峰、離 峰時段供應量之差異,必須興建一座大型的儲氣槽,以供尖、離峰時段的緩衝之用。本公司 為配合永安接收站第三期擴建,在考量環保及工安的問題、用地取得的困難、以及經濟評估 後,決定採用利用老舊氣田,並將之轉換成為地下儲氣窖的方式,選擇鐵砧山氣田,作為將 來進口液化天然氣之地下儲氣層。 目前,這個計劃已經進入地面管線設備的設計階段。 為了確實了解 LNG 注入氣層後,再生 產出來,其在井口分離器內之溫度與壓力的變化,以便能決定是否有必要在井場裝設冷卻器 或者加熱器,所以必須進行此一研究。因為裝設冷卻器所需要的費用為一相當龐大的數目, 在數千萬元以上,所以這項研究工作之成果,可以說非常重要,有可能可以為公司省下一筆 為數不小的成本投資。 根據模擬計算的結果的結果顯示, 若以氣層壓力為 2500 Psi ∼ 3000 Psi、井口流壓在經 節流嘴降壓後為 1000 Psi ∼ 1350 Psi 之設計條件,則氣體在分離器內之溫度不至於過高 ,因此,無需在井場裝設冷卻裝置,但在開井後最初十分鐘左右,有些情況可能會有水化物 的生成。要克服此一問題,可以考慮在這段時間內減少經過節流嘴的壓力降,或者是加裝加 熱器。 |
英文摘要 | The TCS field has been selected to be converted to an underground storage for peak-saving of natural gas supply for northern Taiwan. In the mean time, the project is at the stage of designing the pipeline layout. It is essential to have the knowledge of the behaviour of the pressure and temperature in the separator when the injected gas is re-produced. This is to decide whether it is necessary to build in cooler or heater at the well site. Either cooler or heater is a significant amount of investment, and the result of this study will be able to provide important information that might help the company to avoid the unnecessary investment. The result of the calculation shows that under the given conditions, which the pressure of the reservoir to be 2500 Psi ∼ 3000 Psi, and the final pressure after pressure drop by the choke in the separator to be 1000 Psi ∼ 1350 Psi, the gas temperature in the separator will fall in the temperature range allowed. Therefore, there is no need to build in cooling equipment. Nevertheless, during the very beginning 10 minutes or so, hydrates might be formed in some cases due to a large pressure drop. This can be overcome either by lessening the pressure drop during the very beginning period or by installing heating equipment at the well site. |
本系統中英文摘要資訊取自各篇刊載內容。