新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (6): 748-750.

• 油藏工程 • 上一篇    下一篇

孔喉尺度调堵剂微球在高温高盐条件下的性能

鲁光亮1, 王健1, 鲁道素2, 范伟1, 康博1, 刘长龙1   

  1. 1.西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500;
    2.川庆钻探公司 川西钻探分公司 试修工程事业部,成都 610052
  • 收稿日期:2009-04-07 发布日期:2020-10-23
  • 作者简介:鲁光亮 （1982-）,男,四川泸州人,在读硕士研究生,油气田开发 （Tel）15982375992（E-mail）luguangliangeor@126.com.

Performance of Pore-Throat Scale Microsphere As Profile Control Agent in Conditions of High Temperature and High Salinity

LU Guang-liang1, WANG Jian1, LU Dao-su2, FAN Wei1, KANG Bo1, LIU Chang-long1   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500,China;
    2. The Testing and Workover Engineering Divisional Department, Chuanxi Exploration Drilling Company, Chuanqing Exploration Drilling Company, Chengdu, Sichuan 610052, China
  • Received:2009-04-07 Published:2020-10-23

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摘要： 使用 XL30 扫描电子显微镜,采用新的膨胀倍率评价方法,从微观角度测定了新型孔喉尺度调堵剂微球的形态和膨胀倍率,研究了温度、矿化度和水化膨胀时间对微球膨胀性能的影响规律。微球的粒径膨胀倍率随着温度的升高而逐渐增大,随着矿化度的升高而逐渐减小,随着水化时间的延长而逐渐增大,最终趋于稳定;调堵剂微球在尕斯油藏地层水矿化度为 17 4501 mg/L、油藏温度 126℃下膨胀 15 d,其粒径膨胀倍率为 3.93,表现出良好的抗温抗盐和老化稳定性。通过多测压点长岩心填砂管实验,研究了调堵剂微球的运移封堵性能。调堵剂微球具有良好的注入性和一定的封堵能力。利用天然岩心进行驱油实验,提高采收率达 11.80%.

关键词: 调堵剂, 微球, 温度, 矿化度, 性能, 采收率

Abstract: The microscopic feature and the expansion multiplying factor of new pore-throat scale microsphere As Profile Control Agent are measured using XL30 Scanning Electron Microscope and new expansion multiplying factor evaluation method. The effects of temperature, salinity and swelling time on expansion performance of microsphere are analyzed. The results show that the expansion multiplying factor of microspher's grain diameter gradually increases with the temperature and the swelling time increasing, decreases with the salinity increasing, and ultimately being stable. In Gasi reservoir, this expansion multiplying factor is 3.93 after the microsphere expanded for 15 days under the circumstances of formation water (17 4501 mg/L) and temperature (126℃), showing good temperature resistance, salinity resistance and stability. The performance of migration and plugging of the microsphere As Profile Control Agent is studied by the long core test, showing that it has good injectivity and plugging capacity. The core displacement test indicates that the EOR given by such a new microsphere approach is up to 11.80%.

Key words: profile control agent, microsphere, temperature, salinity, performance, EOR

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