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(shí)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(xiàng)目主要為了解決作業(yè)現(xiàn)場(chǎng)快速識(shí)別油氣顯示,進(jìn)一步落實(shí)儲(chǔ)層流體性質(zhì)以及油質(zhì)特征,同時(shí)剔除鉆井液添加劑等因素對(duì)真實(shí)地層油氣顯示的影響。本項(xiàng)目通過(guò)三維定量熒光技術(shù)以渤中坳陷56口探井77個(gè)標(biāo)準(zhǔn)油樣、292個(gè)壁心塊樣以及41種鉆井液有機(jī)添加劑樣品為分析對(duì)象并進(jìn)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(jī)添加劑的三維定量熒光圖譜庫(kù),為真假油氣顯示判斷提供判斷依據(jù)。通過(guò)原油圖譜特征和添加劑圖譜特征根據(jù)主峰個(gè)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(diǎn)法和最佳波長(zhǎng)比與原油密度投點(diǎn)法。Ex與Em投點(diǎn)法,主要以Em發(fā)射波長(zhǎng)值為標(biāo)準(zhǔn),同時(shí)最佳波長(zhǎng)比做為判別的輔助參數(shù),當(dāng)Em小于340nm,最佳波長(zhǎng)比介于1.127~1.140之間為凝析油;當(dāng)Em為340~385nm,最佳波長(zhǎng)比介于1.155~1.191之間為輕質(zhì)油;當(dāng)Em為385~405nm,最佳波長(zhǎng)比介于1.120~1.153之間為中質(zhì)油;Em大于405nm,最佳波長(zhǎng)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(chǔ)層流體性質(zhì)兩種解釋評(píng)價(jià)方法:圖版法和縱向參數(shù)變化趨勢(shì)法。圖版法通過(guò)油性指數(shù)與對(duì)比級(jí)別兩參數(shù)建立圖版劃分儲(chǔ)層流體性質(zhì),當(dāng)油性指數(shù)大于1且對(duì)比級(jí)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(shì)法利用油性指數(shù)、對(duì)比級(jí)以及氣測(cè)值建立,當(dāng)對(duì)比級(jí)大于6,油性指數(shù)大于1,氣測(cè)值較基值5倍以上為油層,當(dāng)對(duì)比級(jí)大于6,油性指數(shù)小于1,氣測(cè)基值大于5倍以上為氣層,當(dāng)對(duì)比級(jí)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(cè)值縱向突然降低為油水同層,當(dāng)對(duì)比級(jí)小于6,油性指數(shù)數(shù)據(jù)穩(wěn)定,氣測(cè)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(chǎng)作業(yè)中取得了良好的應(yīng)用效果,對(duì)于識(shí)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(shí)別具有較強(qiáng)的技術(shù)優(yōu)勢(shì)。利用該方法對(duì)6口試油井原油性質(zhì)判斷符合率達(dá)100%,對(duì)9口井儲(chǔ)層流體性質(zhì)判斷符合率達(dá)到89%以上,遠(yuǎn)遠(yuǎn)高于常規(guī)錄井對(duì)儲(chǔ)層的判斷能力,進(jìn)一步說(shuō)明三維定量熒光技術(shù)在現(xiàn)場(chǎng)油氣顯示解釋評(píng)價(jià)有很好的作用,逐步向整個(gè)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(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE142

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