非常规油气储层封堵微球的耐温耐盐性能研究  

Study on Temperature and Salt Resistance of Plugging Microspheres for Unconventional Oil and Gas Reservoir

作　　者：计静琦 颜上凯 李锦滔 JI Jing-qi;YAN Shang-kai;LI Jin-tao(Guangzhou Synthetic Materials Research Institute Co.,Ltd.,Guangzhou 510665,Guangdong,China;China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]广州合成材料研究院有限公司,广东广州510665 [2]中国石油大学(北京),北京102249

出　　处：《合成材料老化与应用》2024年第4期18-21,共4页Synthetic Materials Aging and Application

摘　　要：页岩油气的稳定开发是油气能源长远发展的重大问题,而传统高分子聚合物封堵材料不耐高温高盐等因素,使材料发生老化,以至于材料弹性变弱、运移能力变差进而影响其对页岩深层裂缝的封堵能力,这也是泥页岩储层无法稳定开采的重要影响因素。该文针对石墨烯纳米复合封堵微球,研究微球表面形貌、耐温耐盐性能与封堵性能的关系,结果表明,纯聚合物微球封堵能力急剧下降,对温度和矿化度较为敏感,而纳米复合微球较纯聚合物微球具有更好的耐温耐盐性,封堵率下降不显著,这说明纳米复合微球对高温高盐地层有较好的适应性。The stable development of shale oil and gas is a major problem for the long-term development of oil and gas energy.However,the traditional polymer plugging materials are not resistant to high temperature and salinity,which causes the ageing of the materials,so that the elasticity of the materials becomes weak and the migration ability becomes poor,which affects the plugging ability in the deep shale formation.And the plugging ability is also an important factor affecting the stable exploitation of shale reservoirs.In this paper,the relationship between the surface morphology,the high temperature and salt resistance and the plugging performance of the microspheres were studied.The results showed that the plugging ability of pure terpolymer microspheres decreased sharply and they were more sensitive to temperature and salinity,while nanocomposite microspheres had a better high temperature and salt resistance than pure terpolymer microspheres.And the plugging rate of nanocomposite microspheres did not decrease significantly.This showed that the nanocomposite microspheres had a good adaptability to the reservoir formation with high temperature and salinity.

关 键 词：纳米复合微球 耐温耐盐性 封堵性能 

分 类 号：TE39[石油与天然气工程—油气田开发工程]