鐵砧山氣田生產營運管理研究

The Reservoir Management of Tiehchenshan Underground Gas Storage

田志明(C.M. Tien) ； 林孝維(H.W. Lin) ； 陳進發(J.F. Chen) ； 吳偉智(W.J. Wu)

《鑛冶：中國鑛冶工程學會會刊》 63卷2期 (2019/06) Pp. 21-31

https://doi.org/10.30069/MM.201906_63(2).02

摘要

鐵砧山氣田屬於強水侵氣田，當轉成儲氣窖營運時，需盡量達成注產氣量平衡並且監控地層壓力和氣水界面位置等相關資訊，及透過地質模型及油層模擬歷史擬合等技術，瞭解儲氣窖內天然氣可儲存之動態範圍。為維持並提高鐵砧山儲氣窖之利用率，本研究透過民國104年新鑽注產氣井之鑽後資料，評估利用儲氣窖進行擴大注儲及產氣之可行性，研擬最適注產氣方案並規劃未來營運方針。鐵砧山氣田自民國79年注氣開始至現今，期間生產量甚大於注氣量，致底水上升較預期快速，從民國101年底地層壓力突然竄升，研判可能受強水驅影響。本研究建議在儲氣窖注儲能量可減少下，將A地塊蘊藏量產出，B地塊維持儲氣窖功能，惟仍需注意注產平衡及地層壓力之變化，持續監控井口與井底壓力、注產氣量和伴產水鹽度等，以有效瞭解水驅強度對儲氣窖之影響進而有效管理，調整營運策略。

關鍵字

鐵砧山 ； 儲氣窖 ； 油層模擬 ； 歷史擬合

並列摘要

The reservoir type of TCS gas field had strong aquifer drive. When converted to underground gas storage, it was necessary to maintain the injection and production balance. The gas bubble extent in the reservoir was recognized through the integration of a geological model, reservoir simulation, and history matching process. The formation pressure and gas water contact were monitored frequently in order to safely extend the capability of underground gas storage. The aim of this study was to evaluate the expansibility of the existing underground gas storage and develop the optimal management strategy. TCS underground gas storage has been in use for almost thirty years since 1990. The total gas production in this period was greater than injection so that the water encroached faster than expected. We speculated that it could have been under the influence of strong water-drive due to the imbalance of injection and production over a very long period. Our research suggested that the capability of the underground gas storage could be decreased through producing the gas from A block while maintaining the storage function of B block instead. The most effective management strategy for TCS underground gas storage is to keep the injection and production balance, monitor the wellhead pressure, bottom hole pressure, production and injection rate, water salinity, etc.

並列關鍵字

Tiehchenshan ； reservoir simulation ； history matching ； underground gas storage