本文選題：高鹽油藏 + 表面活性劑��； 參考：《長(zhǎng)江大學(xué)》2015年碩士論文

【摘要】：高溫高鹽油藏分布廣泛,為確保我國(guó)原油產(chǎn)量的持續(xù)增長(zhǎng),最大限度增加油田可采儲(chǔ)量并且保持相對(duì)較高的采油速度,強(qiáng)化高溫高鹽油藏采油技術(shù)至關(guān)重要。中原油田油層礦化度高,屬于高鹽油田,開發(fā)難度大。為了改善油田的注水開發(fā)效果,充分利用現(xiàn)有資源,增加可采儲(chǔ)量,設(shè)計(jì)出合理的開采方案對(duì)提高油田的石油產(chǎn)量具有重要意義。本文旨在篩選出適用于中原油田明15塊的表面活性劑驅(qū)油配方。通過大量的文獻(xiàn)調(diào)研,初選了大慶石油磺酸鹽、十二烷基苯磺酸鈉、十二烷基硫酸鈉、十四烷基甜菜堿、NNR、W9510、OP-10、TW-80八種表面活性劑。通過在中原油田模擬地層水的溶解性實(shí)驗(yàn)篩選出十四烷基甜菜、NNR、W9510、OP-10、Tw-80五種溶解性能好的表面活性劑；大慶石油磺酸鹽、十二烷基苯磺酸鈉、十烷基硫酸鈉三種陰離子表面活性劑由于其耐鹽性能較差,容易與地層水產(chǎn)生沉淀而致使溶解性能差。通過對(duì)溶解性能好的五種表面活性劑油水界面張力測(cè)定,發(fā)現(xiàn)這五種表面活性劑溶液均不能與中原油田原油形成較低的界面張力,所以不適合以單劑形式用作該地區(qū)驅(qū)油劑。在表面活性劑單劑無法有效降低界面張力的情況下,對(duì)它們進(jìn)行復(fù)配,考察復(fù)配體系的界面活性。根據(jù)各種類型表面活性劑的特性,確定了離子型與陰-非離子表面活性劑復(fù)配、陰離子型與兩性表面活性劑復(fù)配、非離子型與陰離子型表面活性劑復(fù)配、陰離子型與陰-非離子表面活性劑復(fù)配四類復(fù)配體系。實(shí)驗(yàn)結(jié)果表明：非離子表面活性劑NNR與陰-非離子表面活性劑W9510復(fù)配體系表現(xiàn)出來的界面活性較好,均可達(dá)到超低界面張力,界面張力值最低可達(dá)4.1×10-3mN/m；陰離子表面活性劑石油磺酸鹽與兩性表面活性劑十四烷基甜菜堿復(fù)配體系油水界面活性較好,界面張力最低值可達(dá)2.3×10 mN/m。此外,十二烷基苯磺酸鈉與十四烷基甜菜堿復(fù)配體系、十二烷基硫酸鈉與十四烷基甜菜堿復(fù)配體系、0P-10與石油磺酸鹽復(fù)配體系、TW-80與石油磺酸鹽復(fù)配體系、十二烷基苯磺酸鈉與W9510復(fù)配體系及石油磺酸鹽與W9510復(fù)配體系,這幾種復(fù)配體系具有一定降低油水界面張力的能力,但沒有達(dá)到超低界面張力。最后,對(duì)以上界面活性好的兩種復(fù)配體系進(jìn)行性能評(píng)價(jià),多方面考察驅(qū)油體系在中原油田明15塊的適用性。主要包括抗鈣性能評(píng)價(jià)、抗鎂性能評(píng)價(jià)、乳化性能評(píng)價(jià)、起泡性能評(píng)價(jià)、耐溫性能評(píng)價(jià)。研究發(fā)現(xiàn),NNR與W9510復(fù)配體系、石油磺酸鹽與十四烷基甜菜堿復(fù)配體系抗鈣、鎂能力相當(dāng)。石油磺酸鹽與十四烷基甜菜堿復(fù)配體系的乳化性能、起泡性能優(yōu)于NNR與W9510復(fù)配體系,且石油磺酸鹽與十四烷基甜菜堿復(fù)配體系耐溫性能較好,NNR與W9510復(fù)配體系耐溫性能極差。通過一系列的實(shí)驗(yàn)分析,最終確定十四烷基甜菜堿與石油磺酸鹽復(fù)配比3：1、4：1,總濃度0.1%作為驅(qū)油配方適用于中原油田明15塊。
[Abstract]:The high temperature and high salt reservoirs are widely distributed. In order to ensure the continuous increase of crude oil production, increase the recoverable reserves and maintain relatively high oil recovery rate, it is very important to strengthen the oil recovery technology in high temperature and high salt reservoirs. Zhongyuan oilfield has high mineralization degree, belongs to high salt oil field, and is difficult to develop. In order to improve the effect of water injection development, make full use of existing resources, increase recoverable reserves, and design a reasonable exploitation plan, it is of great significance to increase oil production in oil fields. The aim of this paper is to screen the surfactant flooding formula for Ming15 block in Zhongyuan Oilfield. Eight surfactants, Daqing petroleum sulfonate, sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, tetradecyl betaine (NNRN) W9510OP-10 and TW-80, were selected by a large number of literatures. Through the solubility experiment of simulated formation water in Zhongyuan Oilfield, five surfactants with good solubility, Daqing petroleum sulfonate, sodium dodecyl benzene sulfonate, were selected. Three anionic surfactants of sodium decyl sulfate have poor solubility due to their poor salt resistance and easy precipitation with formation water. By measuring the oil-water interfacial tension of five surfactants with good solubility, it is found that none of the five surfactants can form a lower interfacial tension with the crude oil in Zhongyuan Oilfield, so it is not suitable to be used as a single agent for oil displacement in this area. When the surfactant can not effectively reduce the interfacial tension, they were compounded to investigate the interfacial activity of the composite system. According to the characteristics of various kinds of surfactants, the combination of ionic and anionic surfactants, anionic and amphoteric surfactants, Nonionic surfactants and anionic surfactants were determined. Anion and anion-Nonionic surfactants are mixed into four kinds of systems. The experimental results show that the interfacial activity of Nonionic surfactant NNR and anion-Nonionic surfactant W9510 system is better, and the interfacial tension is very low. The lowest interfacial tension value is 4.1 脳 10 ~ (-3) mn 路m ~ (-1), and the oil / water interfacial activity of the mixed system of anionic surfactant petroleum sulfonate and amphoteric surfactant tetradecyl betaine is better, and the lowest value of interfacial tension is 2.3 脳 10 mn / m ~ (-1). In addition, the mixture system of sodium dodecylbenzene sulfonate and tetradecyl betaine, the mixture system of dodecyl sodium sulfate and tetradecyl betaine, the mixture system of dodecyl benzene sulfonate and petroleum sulfonate, the mixture system of dodecyl benzene sulfonate and tetradecyl betaine, The mixed systems of sodium dodecylbenzene sulfonate and W9510 and petroleum sulfonate and W9510 have the ability to reduce the interfacial tension of oil and water, but they do not reach the ultra-low interfacial tension. Finally, the performance evaluation of the two kinds of composite systems with good interfacial activity was carried out, and the applicability of the flooding system in Ming15 block of Zhongyuan Oilfield was investigated from many aspects. The evaluation includes calcium resistance, magnesium resistance, emulsification, foaming and temperature resistance. It was found that the mixture of NNR and W9510, petroleum sulfonate and tetradecyl betaine had the same ability of resistance to calcium and magnesium. The emulsifying property and foaming property of petroleum sulfonate and tetradecyl betaine were better than that of NNR and W9510, and the thermal resistance of petroleum sulfonate and tetradecyl betaine was better than that of NNR and W9510. Through a series of experiments and analysis, the ratio of tetradecyl betaine and petroleum sulfonate was determined to be 3: 1: 4: 1 and the total concentration of 0.1% was used as the oil displacement formula for Ming15 block of Zhongyuan Oilfield.
【學(xué)位授予單位】：長(zhǎng)江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357.46

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本文編號(hào)：1838907