Nonionic/anionic surfactant mixtures for enhanced oil recovery (EOR): apparent correlation between cloud point, interfacial tension and wettability

الموضوعات

علوم بحتة وطبيعية

الملخص

في هذه الدراسة تم دراسة تأثير ملوحة الماء على نقطة الضباب لسلسة من العامل السطحي الغير أيوني C13EOx (x = 7, 8, 9 and 10) عند تركيز ثابت (0.3%كتله) عند غياب العامل السطحي الأيوني السالب(C12 C13PO3S04 Na) و أظهرت النتائج أن درجة الضباب للعامل السطحي الغير الأيوني تنخفض بزيادة درجة ملوحة الماء وعند إضافة العامل السطحي الأيوني السالب لوحظ أن منحنيات ضبابية العامل الغير الأيوني أنخفضت مقابل ملوحة الماء ولقد وجد أن زيادة Scr تتناسب عكسيا مع زيادة جزيئات أكسيد الإيثيل في العامل السطحي الغير الأيوني.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0bb6ad8c-1e4b-43b9-890d-a00f41763aa5

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1376380_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Ahoud RashidAl Maqbaliyah","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Mohamed Aoudia","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Nonionic/anionic surfactant mixtures for enhanced oil recovery (EOR): apparent correlation between cloud point, interfacial tension and wettability

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

ABSTRACTIn this study the effect of brine salinity on the cloud point was investigated for a series of nonionic surfactants C13EOx (x = 7, 8, 9 and 10) at constant surfactant concentration (0.3 wt %) in presence and absence of an anionic surfactant (C12 C13PO3S04 Na) at different nonionic/anionic weight ratio (3:1, 1:1 and 1:3). In the absence of anionic surfactant, the results showed that the cloud point of the nonionic surfactants decreases as the salinity of brine increases. The relatively high ratio of the structure-making ions (Na+, Cl, HCO3 and S04) concentrations to the structure breaking divalent cations (Ca2+ and Mg2+) concentration in brines used may therefore be attributed to the overall decrease in the cloud point observed. After the addition ofsurfactant the cloud point versus salinity curves decrease with salinity and intersect at a critical salinity, Sc which found to be inversely proportional to the degree of ethoxylation of nonionic surfactants. Below Scr, the cloud point increases with anionic weight fraction. However, above Scr, an opposite behavior observed where the cloud point slightly decreases with increasing anionic weight fraction. Furthermore, the variation of the IFT with time in 0.3 wt% C13E010/C12-13(PO)SO4Na Wf = 3:1 and 1:1) mixtures at different salinity were tested. The results showed that at constant weight fraction as the salinity increases the IFT decreases. A linear relationship was obtained between the IFT and AT = TCP - TR, that the closer the surfactant cloud point to 51°C (temperature at which the IFT is measured) the lower is the interfacial tension at the oil water interface. Then, the potential of 0.3 wt% C13E010/C12-13(PO)&SO4Na (Wp = 3:1) mixture at 2.5 wt% salinity to alter the wettability and to increase the oil recovery in Benthimer sandstone cores was investigated using Amott-Harvey test and core flooding experiment. The results showed that the Amott-Harvey index reduced from 1.0 for brine to 0.86 in presence of surfactant showing the ability of surfactant to slightly shift the wettability of the system towards intermediate wettability. The core flooding experiment showed that the additional oil recovery form surfactant injection was 5.6% of original oil in place (OOIP) and the total oil recovery was 34.8% of original oil in place (OOIP).

كلمات الباحثين

Enhanced oil recovery, Oil field flooding, production method of oil filed, Surface active agents, Surface chemistry

إشراف وإعداد

الإشراف

Mohamed Aoudia

الإعداد

Ahoud RashidAl Maqbaliyah

الاقتباسات الببليوغرافية