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題名 | 利用聚合物抑制氣井水錐現象可行性研究=The Feasibility Study of Water Coning Mitigation by Polymer Injection |
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作者 | 黃瑞鴻; 張光宇; 陳大麟; 吳健一; | 書刊名 | 石油鑽採工程 |
卷期 | 39 1998.12[民87.12] |
頁次 | 頁52-75 |
分類號 | 457.2 |
關鍵詞 | 聚合物; 殘留阻滯係數; 流動阻滯係數; Polymer; Residual resistant factor; RRF; Flow resistant factor; RF; |
語文 | 中文(Chinese) |
中文摘要 | 在無裂縫之儲氣層內,利用聚合物吸附於岩石之表面而降低天然氣井之伴產水量 ,以延長氣井生產壽命之處理方法,近年來在歐洲已有很成功的現場應用實例。降低油氣井 之伴產水量不但能提高採收率,亦可降低處理伴產水之費用並可減少因出水所衍生之腐蝕、 結垢及出砂等生產之問題,降低生產之操作成本。 此種處理方法成功之要件為: 1. 確認出水原因係因水錐而產生 2. 聚合物具耐地層溫度之性質 3. 聚合物與地層水相容 4. 聚合物與岩石顆粒吸附性良好,且對水有選擇性降低相對滲透率但對氣體則否。 經各種試驗篩選後 HE-300 聚合物之各種特性均顯示可適用於臺灣某氣田,建議將進行現場 先導試驗( Pilot Test ),若現場先導試驗成功,則臺灣其他氣田亦可使用此技術來降低 伴產水量以延長氣井生產壽命。 鐵砧山 23 號井短串可做為聚合物抑制水錐之現場先導試驗井, 預期處理成功後估計( 1 )若聚合物可維持四個月時,有新臺幣 4,960,000 元之經濟效益;( 2 )若聚合物可維 持六個月時,有新臺幣 7,980,000 元之經濟效益。 若鐵砧山 23 號井短串做聚合物抑制水錐之現場先導試驗成功後,可將此法推廣至錦水、青 草湖及八掌溪氣田,以延長生產壽命及增加可採蘊藏量。 |
英文摘要 | Polymer has been proved with the capability to mitigate the water production problem of non-fracture gas formation in some fields in Europe recently. Reduce water production rate not only increase gas recovery but also can lower operation cost by reduce water treatment cost and some cost from corrosion, scaling and sand-out problems from water out. The success factors for this treatment are: 1. Make sure the water out mechanism. 2. Polymer can be stable under reservoir temperature. 3. Polymer can be compatible with formation water. 4. Polymer can be adsorbed well on the grains of reservoir rock, it has selective permeability reduction on water rather than on gas. We found HE-300 polymer might be suitable for on gas field in Taiwan from various lab screen tests. Before the field application, a single will pilot test should be performed firstly. If the pilot test show a positive result, we can apply this technique to several gas fields to get more recoverable reserves. Before the field application, a single well pilot test can be performed firstly. The short string of TCS-23 is a good candidate for the pilot test. We estimated the benefit would be NT$4.96 million if the polymer effect can last for four months. If the polymer effect can last for six months, the benefit can increase to NT$7.98 million. If the pilot test show a positive result, we can apply this technique to several gas fields, such as CS, TCH, and PCC, to get more recoverable reserves. The future work will focus on the feasibility of polymer treatment. |
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