發(fā)布時(shí)間：2018-06-10 07:44

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

【摘要】：反卷積計(jì)算的本質(zhì)是最優(yōu)化,通過對(duì)實(shí)測(cè)資料的優(yōu)化處理,構(gòu)造出理想的、等效的、對(duì)應(yīng)于相同時(shí)間段內(nèi)以恒定產(chǎn)量生產(chǎn)條件下的壓力變化,得到測(cè)試全部過程的壓力響應(yīng),其探測(cè)范圍比任何一段壓力恢復(fù)都要大得多,而且不存在簡(jiǎn)化產(chǎn)量、疊加計(jì)算等所帶來的影響,也不存在產(chǎn)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(jié)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(shù)值實(shí)驗(yàn),研究了反卷積的工作過程。同時(shí)對(duì)該方法的敏感性、使用條件、優(yōu)勢(shì)及局限性也進(jìn)行了探討。針對(duì)特低滲透油藏關(guān)井壓力恢復(fù)時(shí)間短,利用常規(guī)解釋方法計(jì)算的探測(cè)半徑有限,嚴(yán)重影響后續(xù)布井方式和布井?dāng)?shù)量等問題,本文將反卷積方法應(yīng)用于特低滲透油藏中,通過試井設(shè)計(jì)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(shù)應(yīng)用于普光氣田和內(nèi)蒙探區(qū)低滲透油藏中,通過13井次的實(shí)際現(xiàn)場(chǎng)應(yīng)用,解決了低滲透油氣藏測(cè)試過程中長期關(guān)井作業(yè)占產(chǎn)問題;解決了普光高含H_2S、CO_2等腐蝕性氣體時(shí),長時(shí)間采用鋼絲測(cè)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(guān)井測(cè)試時(shí)間短導(dǎo)致測(cè)試資料存在多解性以及探測(cè)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(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE353

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本文編號(hào)：2002480