| 生产参数对沥青质井筒析出影响规律研究 |
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| 引用本文： | 吴川,张汝生,张祖国,佘跃惠,吴正彬.生产参数对沥青质井筒析出影响规律研究[J].西南石油大学学报（自然科学版）,2017,39(2):172-178. |
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| 作者姓名： | 吴川 张汝生 张祖国 佘跃惠 吴正彬 |
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| 作者单位： | 1. 中国石化石油勘探开发研究院, 北京 海淀 100083;2. 长江大学化学与环境工程学院, 湖北 荆州 434023;3. 中国石油大学(北京)石油工程学院, 北京 昌平 102249 |
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| 基金项目： | 国家科技重大专项（2011ZX05031003004）；中国石化科技部攻关项目（P15128）；中国石化重大科技项目（ZDP17005） |
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| 摘 要： | 针对油田沥青质井筒沉积问题，开展了生产参数对沥青质井筒析出影响规律研究，研究中采用了压差法，高温高压条件下测定温度、油气比、流速等对沥青质析出压力与再溶解的临界压力的变化规律。研究结果表明，沥青质析出压力（ponset）与温度成反比，而沥青质再溶解的临界压力（pred）与温度成正比；温度一定，沥青质析出压力（ponset）随着油气比增大而增大，即原油中溶解气体量大，沥青质沉积的趋势增大；油气比和温度一定时，流速变化对沥青质的析出压力和再溶解压力几乎没有影响。
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| 关 键 词： | 沥青质 析出规律 温度 油气比 流速 |
| 收稿时间： | 2015-05-19 |
Influence of Production Parameters on Asphaltene Precipitation Regularity in Wellbore |
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| WU Chuan,ZHANG Rusheng,ZHANG Zuguo,SHE Yuehui,WU Zhengbin.Influence of Production Parameters on Asphaltene Precipitation Regularity in Wellbore[J].Journal of Southwest Petroleum University(Seience & Technology Edition),2017,39(2):172-178. |
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| Authors: | WU Chuan ZHANG Rusheng ZHANG Zuguo SHE Yuehui WU Zhengbin |
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| Institution: | 1. Petroleum Exploration and Production Research Institute, SINOPEC, Haidian, Beijing 100083, China;2. College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, Hubei 434023, China;3. College of Petroleum Engineering, China University of Petmleum(Beijing), Changping, Beijing 102249, China |
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| Abstract: | This study investigated the influence of production parameters on asphaltene precipitation regularity under the conditions of high temperature and high pressure and evaluated the influence of temperature, GOR (gas-oil ratio), and flow velocity on asphaltene precipitation in wellbores. The results showed that the pressure of asphaltene precipitation (ponset) was inverse to temperature and the pressure of asphaltene redissolving (pred) was proportionate to temperature. ponset was proportionate to the GOR at a certain temperature because the dissolved gases in the oil increased when the GOR improved and may have caused asphaltene precipitation. ponset and pred were not influenced by flow velocity in certain GOR and temperature ranges. This study demonstrated how asphaltene precipitation regularity can be controlled to decrease the risk of asphaltene precipitation in wellbores. |
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| Keywords: | asphaltene precipitation regularity temperature GOR flow velocity |
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