کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8125095 | 1522775 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laboratory experiment on a toluene-polydimethyl silicone thickened supercritical carbon dioxide fracturing fluid
ترجمه فارسی عنوان
آزمایش آزمایشگاهی روی سیلیکون تولوئن-پلیدیمیل سیلیکون مایع شکست دی اکسید کربن فوق بحرانی کاهش یافته است
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کلمات کلیدی
مایع شکستگی دی اکسید کربن فوق بحرانی، حداقل فشار مخلوط، ویسکوزیته، شبیه سازی دینامیک مولکولی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
چکیده انگلیسی
Supercritical carbon dioxide (SCCO2) fracturing fluid is an excellent application in CO2 re-use. It has many advantages than water-based fracturing fluids. However, the low viscosity hinders its application in unconventional oil and gas reservoirs. Therefore, we tried to improve the property of SCCO2 fracturing fluid by increasing the viscosity. A thickened SCCO2 fracturing fluid was constructed and the fracturing property of the fracturing fluid was investigated. The fracturing fluid consisted of toluene (cosolvent), polydimethyl silicone (thickener) and SCCO2. In SCCO2, toluene and polydimethyl silicone obtain low miscible pressure at 42â¯Â°C. In addition, the constructed fracturing fluid system obtains higher viscosity value (as high as 1.5â¯mPa·s), which can be 40 times high than the viscosity of pure SCCO2 at 42â¯Â°C and 20â¯MPa. These features match the viscosity requirement as a fracturing fluid. Molecular dynamics (MD) simulations were carried out to study the solubility parameter of the fracturing fluid system in molecular level. These MD simulation results show that, as a cosolvent, toluene helps polydimethyl silicon dissolve in SCCO2, which is consistent with laboratory experiment results. Moreover, the studied fracturing fluid obtains good properties as a fracturing fluid in terms of high proppant carrying capability, low fluid leakoff coefficient, and low formation damage rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Petroleum Science and Engineering - Volume 166, July 2018, Pages 369-374
Journal: Journal of Petroleum Science and Engineering - Volume 166, July 2018, Pages 369-374
نویسندگان
Mingyong Du, Xin Sun, Caili Dai, Hao Li, Tao Wang, Zhongliang Xu, Mingwei Zhao, Baoshan Guan, Ping Liu,