【摘要】：針對(duì)在高溫、高鹽油藏條件下表面活性劑的使用,本文研究了烷基酚聚氧乙烯醚羧酸鹽和甜菜堿型表面活性劑的相關(guān)性能。以烷基酚聚氧乙烯醚和氯乙酸酯為原料,合成了烷基酚聚氧乙烯醚羧酸鹽。用高效液相色譜測(cè)定產(chǎn)品收率,確定合成條件為:在40℃下鈉化反應(yīng)1h,在65℃~70℃之間滴加氯乙酸酯并反應(yīng)6h左右,各反應(yīng)物摩爾比例為NP-7:NaOH:ClCH2COOR=1:2.2:1.2。130℃條件下,合成的烷基酚聚氧乙烯醚羧酸鹽在pH值為5和7的高礦化度模擬地層水中有較好的熱穩(wěn)定性;而pH值為11時(shí)其熱穩(wěn)定性明顯下降。建立了高效液相色譜法(HPLC)測(cè)定長(zhǎng)碳鏈羧基甜菜堿濃度的方法:示差折光檢測(cè)器RID-10A;色譜柱為SHIM-PACK VP-ODS C18反相色譜柱(4.6mm×250mm);流動(dòng)相為甲醇:水=80:20~70:30,柱溫40℃,流速1.0mL/min,進(jìn)樣量20μL。以此為基礎(chǔ),評(píng)價(jià)了十二烷基二甲基羧基甜菜堿(CBET-12)的熱穩(wěn)定性,并和十二烷基三甲基氯化銨(1231)進(jìn)行了比較。結(jié)果表明,130℃時(shí)在不同酸堿性與礦化度條件下二者都有著較好的熱穩(wěn)定性。另外,論文還研究了十二烷基二甲基羧基甜菜堿(CBET-12)在碳酸鹽巖表面上吸附性能。結(jié)果表明,在zeta電位顯示為負(fù)電的碳酸鹽巖表面,其吸附量隨著NaCl含量的增大而略有增大;而在不同濃度CaCl2溶液中,吸附量都在4.0mg/g以上,接近于NaCl溶液吸附量的2倍。
[Abstract]:The properties of alkylphenol polyoxyethylene ether carboxylate and betaine type surfactants were studied for the use of surfactants in high temperature and high salt reservoirs. Alkylphenol polyoxyethylene ether carboxylate was synthesized from alkylphenol polyoxyethylene ether and chloroacetate. The yield of the product was determined by high performance liquid chromatography (HPLC). The synthetic conditions were determined as follows: sodium reaction at 40 鈩，

本文編號(hào)：2257615