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  本文選題：卷積 + 反卷積　； 參考：《中國石油大學(華東)》2015年碩士論文

【摘要】：反卷積計算的本質是最優(yōu)化,通過對實測資料的優(yōu)化處理,構造出理想的、等效的、對應于相同時間段內以恒定產量生產條件下的壓力變化,得到測試全部過程的壓力響應,其探測范圍比任何一段壓力恢復都要大得多,而且不存在簡化產量、疊加計算等所帶來的影響,也不存在產量史的不完整而造成的誤差,可獲得比常規(guī)試井解釋更多、更可靠的解釋結果。本文從反卷積的意義出發(fā),論述了反卷積方法、Schroeter方法和Levitan方法并通過模擬數值實驗,研究了反卷積的工作過程。同時對該方法的敏感性、使用條件、優(yōu)勢及局限性也進行了探討。針對特低滲透油藏關井壓力恢復時間短,利用常規(guī)解釋方法計算的探測半徑有限,嚴重影響后續(xù)布井方式和布井數量等問題,本文將反卷積方法應用于特低滲透油藏中,通過試井設計分析了影響特低滲透砂巖油藏試井解釋的主要因素,證明了反卷積算法的有效性和優(yōu)越性。本文將反卷積試井技術應用于普光氣田和內蒙探區(qū)低滲透油藏中,通過13井次的實際現場應用,解決了低滲透油氣藏測試過程中長期關井作業(yè)占產問題;解決了普光高含H_2S、CO_2等腐蝕性氣體時,長時間采用鋼絲測試存在含硫氣體泄露以及井工具落井等較大安全隱患問題;解決了大量由關井測試時間短導致測試資料存在多解性以及探測范圍小等問題。
[Abstract]:The essence of deconvolution calculation is optimization. By optimizing the measured data, the ideal, equivalent, corresponding pressure variation under constant production conditions in the same period of time is constructed, and the pressure response of the whole testing process is obtained. Its detection range is much larger than any section of pressure recovery, and there is no effect of simplified production rate, superposition calculation, etc., and there is no error caused by incomplete production history, which can obtain more explanations than conventional well testing. A more reliable explanation of the results. Based on the significance of deconvolution, this paper discusses the deconvolution methods, Schroeter method and Levitan method, and studies the working process of deconvolution through numerical simulation experiments. The sensitivity, application conditions, advantages and limitations of the method are also discussed. In view of the short recovery time of shut-in pressure in ultra-low permeability reservoirs and the limited detection radius calculated by conventional interpretation methods, which seriously affect the subsequent well layout and the number of wells, this paper applies the deconvolution method to ultra-low permeability reservoirs. The main factors influencing well test interpretation of ultra-low permeability sandstone reservoir are analyzed through well test design, and the effectiveness and superiority of deconvolution algorithm are proved. In this paper, the deconvolution well testing technology is applied to Puguang gas field and low permeability reservoirs in Inner Mongolia exploration area. Through the actual field application of 13 wells, the problem of long term shut-in operation in low permeability reservoir testing process is solved. In the case of high H2SCO2 corrosion gas in Puguang, long time steel wire is used to test the sulfur gas leakage and the safety problems such as tool falling down well are solved. A lot of problems such as multi-solution and small detection range caused by short well shut-in test time are solved.
【學位授予單位】：中國石油大學(華東)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE353

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本文編號：2002480