本文選題：改性乳化瀝青 + 選擇性堵水�。� 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：油井出水是困擾油田發(fā)展的重要問題,石油儲(chǔ)層分布是不均勻的,不同儲(chǔ)層之間存在比較大的差異,注入的水就會(huì)沿著儲(chǔ)層向下滲透,出現(xiàn)的這種情況就會(huì)過早地淹沒儲(chǔ)層,大大降低了油層儲(chǔ)量,導(dǎo)致油井含水量增加,甚至出現(xiàn)油井關(guān)閉的情況,導(dǎo)致原油不能開采。所以,在開采石油過程中,要密切關(guān)注水的動(dòng)向,研究并采取適當(dāng)?shù)亩滤椒?減少油井出水,進(jìn)一步提高采收率。選擇性堵水是堵劑研究的一個(gè)發(fā)展方向。改性乳化瀝青選擇性堵水劑是根據(jù)瀝青在油和水中的溶解性不同,其本身在油層中能夠被油溶解而帶出,對(duì)油層無損害,而在水層中由于不能被水溶解,沉降在孔道中,在地層溫度和顆粒間相互吸附的作用下,小顆粒聚集并粘接在一起,形成較大顆粒,封堵了地層中的大孔道,達(dá)到堵水的目的。改性乳化瀝青堵水劑具有無毒、無臭、施工安全、環(huán)保,且原料來源廣泛等優(yōu)良特性,是一種對(duì)油層無污染的新型選擇性堵水劑。本文以改性乳化瀝青儲(chǔ)存穩(wěn)定性試驗(yàn)為依據(jù),進(jìn)行了大量的實(shí)驗(yàn)。以2%的椰子油脂肪酸二乙醇酰胺/十二烷基硫酸鈉為主乳化劑,添加0.2%的聚丙烯酰胺,研制了改性乳化瀝青選擇性堵水劑。分析了改性乳化瀝青的乳化機(jī)理和乳液的穩(wěn)定機(jī)理,對(duì)改性乳化瀝青的儲(chǔ)存穩(wěn)定性進(jìn)行了研究,討論了乳化劑種類及劑量、pH值、穩(wěn)定劑等重要因素對(duì)改性乳化瀝青儲(chǔ)存穩(wěn)定性的影響規(guī)律。制備的改性乳化瀝青堵水劑在常溫下粘度低,具有良好的注入性。實(shí)驗(yàn)室封堵率實(shí)驗(yàn)表明,所制備的改性乳化瀝青選擇性堵水劑具有明顯的選擇性,對(duì)水的封堵率大于92%,而對(duì)油的封堵率小于20%,該堵劑具有很強(qiáng)的封堵能力。在現(xiàn)場(chǎng)應(yīng)用中,將實(shí)驗(yàn)井日產(chǎn)液恢復(fù)到22t,日產(chǎn)油從措施前的6.5t提升至8t,含水從69%降至61%,取得了明顯的增油效果。
[Abstract]:The oil well water is an important problem that plagued the development of oil fields. The distribution of oil reservoirs is uneven, and there is a large difference between different reservoirs. The injected water will permeate down the reservoir. This situation will inundate the reservoir early, greatly reduce the reservoir reserves, lead to the increase of water content in the oil well, and even turn off the oil well. In the process of mining oil, it is necessary to pay close attention to the trend of water, study and adopt appropriate water plugging methods, reduce the water quality of oil wells, and further improve the recovery. Selective water plugging is a developing direction for the research of plugging agent. The modified emulsified asphalt water plugging agent is based on the asphalt in oil and water. In the oil layer, it can be dissolved in oil and can be dissolved in the oil layer, and it can not be damaged in the oil layer, but in the water layer, because it can not be dissolved in the water, it settles in the channel. Under the action of the formation temperature and the interaction between the particles, the small particles gather and stick together to form larger particles and block the large pores in the formation to reach the order of water plugging. The modified emulsified asphalt water plugging agent is a new type of selective water plugging agent, which has no toxic, odorless, safe construction, environmental protection and extensive source of raw materials. This paper is based on the storage stability test of modified emulsified asphalt, and a large number of tests are carried out, with 2% coconut oil fatty acid two ethanolamide / twelve alkane. The selective water plugging agent of modified emulsified asphalt was developed by adding 0.2% polyacrylamide as emulsifier and adding polyacrylamide. The emulsifying mechanism of modified emulsified bitumen and the stability mechanism of emulsion were analyzed. The storage stability of modified emulsified bitumen was studied. The kinds of emulsifier, dosage, pH value, stabilizer and other important factors were discussed. The modified emulsified asphalt water plugging agent has low viscosity at normal temperature and has good injectivity. The laboratory sealing rate experiment shows that the modified emulsified asphalt selective water plugging agent has obvious selectivity, the blocking rate of water is greater than 92%, and the blocking rate of oil is less than 20%. In the field application, the daily liquid of the experiment well is restored to 22T, and the daily oil of daily oil is raised to 8t from the 6.5T before the measure, and the water content is reduced from 69% to 61%, and the obvious effect of oil increase is obtained.

【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】：2015
【分類號(hào)】：TE358.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 宋哲玉,徐培華,韓世合;乳化劑對(duì)瀝青材料性能影響研究[J];石油瀝青;1997年04期

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本文編號(hào)：1800631