英文篇名
Case Study of Carbon Storage Capacity Estimation Using 3000m Deep Drilling into a Deep Saline Aquifer
作者
俞旗文、譚志豪、黃鐘、楊明偉
關鍵字
臺西盆地,CCS,深部鹽水層,有效封存量
摘要
本案例介紹於彰濱工業區崙尾區(舊彰工電廠預定地)成功進行TPCS-M1井(以下簡稱M-1井)3000m泥漿工法深鑽與1379m取心(岩心提取率92%),創下國內歷來連續取心最深紀錄。透過M-1井的深鑽取心,確認二氧化碳地質封存(Carbon Storage)目標層層序與各層頂部高程與厚度,並取得岩心進行分析試驗取得必要評估參數,從而建立新的碳封存發展所需之區域地質模型。本案依據新地質模型並結合既有區域震測資料,進行了有效封存量潛能的再評估。評估結果顯示:以M-1井為中心半徑30公里平面區域下方,作為本案研究查證範圍(Area of review; AoR)之條件下,對應於臺西盆地南側內的深部鹽水層內,鄰近台電燃煤火力電廠大量二氧化碳排放源,深度800至3000m以內,有三處可行性高的「封存貯留層」(R-1, R-2, R-3),其有效封存量分別有49.3億噸、62.7億噸、25.3億噸,共計達137.3億噸。後續計畫將可規劃利用本案例研究查證成果做為繼續推動國內碳捕獲與封存(CCS)技術發展之基石。
英文摘要
This case study introduces TPCS-M1 well (hereinafter referred to as M-1 well) which encompasses 3000m mud drilling and 1379m coring (core recovery ratio 92%) and had been successfully carried out in Zhang-Bin Industrial Park, and set a record of the deepest continuous coring in the domestic history. Through deep drilling and coring of M-1 well, the sequence of the target layer of carbon storage and the elevation and thickness of the tops of each layer are confirmed, and the core is obtained for necessary analysis and tests, so as to establish the regional geology required for the development of new geological model fit for carbon storage with sufficient parameters. In this case, based on the new geological model and combined with the existing regional seismic data, a re-evaluation of the effective storage capacity potential was carried out. The assessment results show that, with M-1 as the center, below the plane area with a radius of 30 kilometers, in the deep saline aquifer strata on the south side of the Tai-Hsi Basin, adjacent to the Tai-power coal-fired thermal power plant (a huge amount of carbon dioxide emission sources), within a depth of 800 to 3000 meters, there are three highly feasible "storage layers" (R-1, R-2, R-3), as the area of review (AoR) in this case study, their effective storage capacity is 4.93 billion tons, 6.27 billion tons, 2.53 billion tons, a total of 13.73 billion tons. Subsequent storage developing plans can use the results of this case study as the cornerstone for continuing carbon capture and sequestration/storage (CCS) development.