本文選題：天然氣水合物 + 松散沉積物　； 參考：《海洋地質與第四紀地質》2017年05期

【摘要】：含水合物沉積物滲透率是水合物開采相關工作的基礎參數(shù)之一。穩(wěn)態(tài)法在應用于滲透率較低的多孔介質時存在著穩(wěn)定滲流難和試驗耗時長等缺點。目前,含水合物細顆粒沉積物滲透率試驗數(shù)據積累明顯不足。本文首先介紹了瞬態(tài)壓力脈沖法的基本原理及數(shù)據處理方法,然后以模擬試驗驗證了瞬態(tài)壓力脈沖法的適用性,最后探討了該方法在松散含水合物沉積物滲透率測量方面的應用效果。結果表明:瞬態(tài)壓力脈沖法近似解處理粉細砂沉積物試驗數(shù)據效果較好,而處理黏土沉積物試驗數(shù)據存在明顯誤差,建議采用數(shù)值模擬反演分析的方法處理瞬態(tài)壓力脈沖法試驗數(shù)據;瞬態(tài)壓力脈沖法適用于松散沉積物滲透率測量,在含水合物沉積物滲透率試驗研究方面具有潛在的應用前景。
[Abstract]:The permeability of hydrate-bearing sediment is one of the basic parameters of hydrate mining. When the steady state method is applied to porous media with low permeability, it is difficult to steady seepage and takes a long time to test. At present, the accumulation of permeability test data of fine granular sediments containing hydrate is obviously insufficient. In this paper, the basic principle and data processing method of transient pressure pulse method are introduced, and the applicability of transient pressure pulse method is verified by simulation test. Finally, the application effect of this method in the measurement of permeability of loose hydrate-bearing sediments is discussed. The results show that the approximate solution of transient pressure pulse method is effective in treating silt sediment test data, but there are obvious errors in treating clay sediment test data. It is suggested that the method of numerical simulation and inverse analysis should be used to deal with the test data of transient pressure pulse method, which is suitable for the measurement of permeability of loose sediments and has a potential application prospect in the experimental study of hydrate sediment permeability.
【作者單位】： 國土資源部天然氣水合物重點實驗室中國地質調查局青島海洋地質研究所;青島海洋科學與技術國家實驗室海洋礦產資源評價與探測技術功能實驗室;中國石油大學(華東)信息與控制工程學院;
【基金】：國家自然科學基金(11402131) 中國地質調查項目(DD20160216)
【分類號】：TE37
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本文編號：1841301