本文選題：火燒油層 + 物理模擬�。� 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：火燒油層是熱力采油中極具技術(shù)上的優(yōu)勢(shì)和發(fā)展研究潛力的方法,它有采收率高/成本低的優(yōu)點(diǎn),且它的油藏適應(yīng)范圍廣。卻因機(jī)理復(fù)雜和很多有待解決的問(wèn)題,尤其是尚不能直觀認(rèn)識(shí)油層里氧化反應(yīng)的機(jī)理,,使火燒油層在現(xiàn)場(chǎng)中應(yīng)用受限。為解決這個(gè)問(wèn)題,本文總結(jié)了前人的研究成果,對(duì)火燒油層采油的化學(xué)機(jī)理研究開(kāi)展了深入研究。應(yīng)用物理模擬裝置系統(tǒng)研究了火燒油層低溫氧化反應(yīng)、高溫氧化反應(yīng)的本質(zhì);劃分了低溫氧化反應(yīng)、裂解反應(yīng)、高溫氧化反應(yīng)區(qū)間;測(cè)出溫度場(chǎng)的變化形態(tài);測(cè)算出自燃溫度、空氣需要量、空氣油比、氧氣利用率和視H/C原子比等火燒油層在燃燒時(shí)的基礎(chǔ)參數(shù);分析了不同類型原油低溫氧化反應(yīng)產(chǎn)物物理化學(xué)性質(zhì)變化,初步認(rèn)識(shí)低溫氧化作用機(jī)理;其結(jié)論可以為現(xiàn)場(chǎng)方案的設(shè)計(jì)提供科學(xué)的依據(jù)。實(shí)驗(yàn)對(duì)不同油品(冷37-45-562井特稠油天然油砂、高3-2-75井普通稠油、曙1-38-330超稠油、杜66普通稠油)的燃燒指標(biāo)進(jìn)行對(duì)比,得出相應(yīng)油品燃燒前緣的推進(jìn)速率,并推斷出相應(yīng)的驅(qū)油效率。將采出的油進(jìn)行分析,對(duì)不同區(qū)塊油品的燃燒參數(shù)進(jìn)行比對(duì)分析,研究發(fā)現(xiàn)經(jīng)過(guò)火燒油層的實(shí)驗(yàn)后,生成了一種能反映火驅(qū)燃燒高溫氧化反應(yīng)機(jī)理的重要標(biāo)記化合物—蒽。從而揭示了燃燒反應(yīng)這個(gè)過(guò)程中原油的粘度、密度降低等參數(shù)變化的主要原因,因原始地層中不存在蒽這種物質(zhì),因此火燒油層反應(yīng)后采出的油中假設(shè)存在該類物質(zhì)則認(rèn)定判定火驅(qū)成功,物質(zhì)蒽可以認(rèn)為是火驅(qū)成功與否的重要標(biāo)記化合物之一。對(duì)不同類型原油(曙1-38-32超稠油、杜66普通稠油、齊131稀油、沈625高凝油)不同溫度條件(90℃、110℃、150℃和200℃)做了低溫氧化靜態(tài)實(shí)驗(yàn),認(rèn)識(shí)了不同溫度條件下低溫氧化對(duì)不同類型原油物理化學(xué)性質(zhì)的影響及尾氣組分變化規(guī)律,初步掌握了低溫氧化特征及其作用機(jī)理。
[Abstract]:The burning reservoir is a method with great technical advantages and developing potential in thermal oil recovery. It has the advantages of high recovery factor and low cost, and its reservoir has a wide range of adaptability. However, because of the complex mechanism and many problems to be solved, especially the mechanism of oxidation reaction in the reservoir can not be directly understood, the application of the burning oil layer in the field is limited. In order to solve this problem, this paper summarized the previous research results and carried out a deep study on the chemical mechanism of oil recovery in the burning reservoir. In this paper, the nature of the oxidation reaction at low temperature, the nature of oxidation reaction at high temperature, the division of low temperature oxidation reaction, pyrolysis reaction, high temperature oxidation reaction interval, the shape of temperature field, the measurement of spontaneous combustion temperature are studied systematically by physical simulation device. The basic parameters such as air requirement, air / oil ratio, oxygen utilization ratio and apparent H / C atomic ratio during combustion are analyzed, the physical and chemical properties of the products of low temperature oxidation reaction of different types of crude oil are analyzed, and the mechanism of low temperature oxidation is preliminarily understood. The conclusion can provide scientific basis for the design of the field scheme. The combustion indexes of different oil products (natural oil sand of cold 37-45-562 well, ordinary heavy oil of high 3-2-75 wells, Shu 1-38-330 super heavy oil and Du66 ordinary heavy oil) were compared and the propelling rate of corresponding oil combustion front was obtained. The corresponding oil displacement efficiency is inferred. The oil produced was analyzed and the combustion parameters of different blocks were compared and analyzed. It was found that an important marker compound, anthracene, which could reflect the mechanism of high temperature oxidation reaction of fire drive combustion, was formed after the experiment of burning oil layer. Thus, the main reasons for the change of viscosity and density of crude oil during combustion reaction are revealed, because anthracene, a substance, does not exist in the original formation. Therefore, in the oil produced after the reaction of burning oil layer, the existence of this kind of substance is assumed to determine the success of fire flooding, and anthracene can be considered as one of the important marker compounds for the success of fire flooding. The static oxidation experiments at low temperature (90 鈩，

本文編號(hào)：2052051