本文關(guān)鍵詞： 三維定量熒光技術(shù) 微弱熒光 真假油氣顯示 油質(zhì)識別　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：本次研究項目主要為了解決作業(yè)現(xiàn)場快速識別油氣顯示,進一步落實儲層流體性質(zhì)以及油質(zhì)特征,同時剔除鉆井液添加劑等因素對真實地層油氣顯示的影響。本項目通過三維定量熒光技術(shù)以渤中坳陷56口探井77個標(biāo)準(zhǔn)油樣、292個壁心塊樣以及41種鉆井液有機添加劑樣品為分析對象并進行綜合研究。建立了不同性質(zhì)原油、鉆井液體系高熒光有機添加劑的三維定量熒光圖譜庫,為真假油氣顯示判斷提供判斷依據(jù)。通過原油圖譜特征和添加劑圖譜特征根據(jù)主峰個數(shù),出峰位置很好地判斷真假油氣顯示。建立了兩種原油性質(zhì)判別方法:Ex與Em投點法和最佳波長比與原油密度投點法。Ex與Em投點法,主要以Em發(fā)射波長值為標(biāo)準(zhǔn),同時最佳波長比做為判別的輔助參數(shù),當(dāng)Em小于340nm,最佳波長比介于1.127~1.140之間為凝析油;當(dāng)Em為340~385nm,最佳波長比介于1.155~1.191之間為輕質(zhì)油;當(dāng)Em為385~405nm,最佳波長比介于1.120~1.153之間為中質(zhì)油;Em大于405nm,最佳波長比介于1.088~1.123之間為重質(zhì)油。建立了三維定量熒光錄井技術(shù)儲層流體性質(zhì)兩種解釋評價方法:圖版法和縱向參數(shù)變化趨勢法。圖版法通過油性指數(shù)與對比級別兩參數(shù)建立圖版劃分儲層流體性質(zhì),當(dāng)油性指數(shù)大于1且對比級大于6為油層,當(dāng)油性指數(shù)小于1且油性指數(shù)大于6為氣層,當(dāng)油氣指數(shù)小于6為干層或水層�？v向參數(shù)變化趨勢法利用油性指數(shù)、對比級以及氣測值建立,當(dāng)對比級大于6,油性指數(shù)大于1,氣測值較基值5倍以上為油層,當(dāng)對比級大于6,油性指數(shù)小于1,氣測基值大于5倍以上為氣層,當(dāng)對比級同層頂部高于底部,且頂部大于6,油性指數(shù)大于1且底部變大,氣測值縱向突然降低為油水同層,當(dāng)對比級小于6,油性指數(shù)數(shù)據(jù)穩(wěn)定,氣測值小于基值的5倍為水層。該方法在渤中坳陷近兩年現(xiàn)場作業(yè)中取得了良好的應(yīng)用效果,對于識別真假油氣顯示,輕質(zhì)油藏發(fā)現(xiàn)、微弱熒光顯示,流體性質(zhì)以及油質(zhì)類型識別具有較強的技術(shù)優(yōu)勢。利用該方法對6口試油井原油性質(zhì)判斷符合率達100%,對9口井儲層流體性質(zhì)判斷符合率達到89%以上,遠遠高于常規(guī)錄井對儲層的判斷能力,進一步說明三維定量熒光技術(shù)在現(xiàn)場油氣顯示解釋評價有很好的作用,逐步向整個渤海海域應(yīng)用推廣。
[Abstract]:The main purpose of this research project is to solve the problem of quick identification of oil and gas display on the job site, and to further implement the reservoir fluid properties and oil quality characteristics. At the same time, the effects of drilling fluid additives and other factors on the oil and gas display in real formation were eliminated. Based on the 3D quantitative fluorescence technique, 292 wall core samples and 41 kinds of drilling fluids were added to 57 standard oil samples of 56 exploration wells in Bozhong Depression. The additive sample was used as the analytical object and the comprehensive study was carried out. The crude oil with different properties was established. The 3D quantitative fluorescence map library of high fluorescence organic additives in drilling fluid system provides a basis for judging true and false oil and gas display. Through the characteristics of crude oil map and additive spectrum, the number of main peaks is calculated. In this paper, we have established two methods to judge the true and false oil and gas display. Two methods of judging crude oil properties, one is to judge the properties of crude oil, and the other is to determine the point of point of the best wavelength ratio and the density of crude oil. The two methods are mainly based on the emission wavelength of Em. At the same time, the optimum wavelength ratio is between 1.127nm and 1.140.When the Em is less than 340nm, the optimum wavelength ratio is between 1.155nm and 1.155nm, and the optimum wavelength ratio is between 1.155nm and 1.191.The optimum wavelength ratio is 1.127nm, and the optimum wavelength ratio is 1.155nm, and the optimum wavelength ratio is between 1.155nm and 1.191. When E _ m is 385nm, the optimum wavelength ratio is between 1.120 and 1.153, the medium oil E _ m is greater than 405nm, and the best wavelength ratio is between 1.088 and 1.123. Two interpretation and evaluation methods for reservoir fluid properties of 3D quantitative fluorescence logging technology are established: chart method and longitudinal method. The method of chart plate is used to divide the fluid properties of reservoir through two parameters: oil index and contrast level. When the oil index is greater than 1 and the correlation level is greater than 6, when the oil index is less than 1 and the oil index is greater than 6, and when the oil and gas index is less than 6, it is a dry layer or a water layer. When the correlation stage is greater than 6, the oil index is greater than 1, the gas value is more than 5 times of the base value, when the contrast stage is greater than 6, the oil index is less than 1, and the base value of gas measurement is more than 5 times. When the top of the same layer is higher than the bottom, and the top is greater than 6, the oil index is greater than 1 and the bottom becomes larger, and the gas measurement value suddenly decreases to the same layer of oil and water. When the contrast level is less than 6, the data of oil index is stable. The gas logging value is less than 5 times of the base value. The method has been applied to the field operation in the last two years in the Bozhong Depression. For identifying true and false oil and gas, the light oil reservoir is found to have weak fluorescence display. The identification of fluid properties and oil quality types has a strong technical advantage. By using this method, the coincidence rate of judging crude oil properties in 6 wells is 100 and that in 9 wells is more than 89%. It is far higher than conventional logging in judging reservoir, which further shows that 3D quantitative fluorescence technique has a good effect on oil and gas interpretation and evaluation in the field, and is gradually applied to the whole Bohai Sea area.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE142

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