• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SPE International Conference and Exhibition on Formation Damage Control >Performance Comparison of Novel Chemical Agents for MitigatingWater-Blocking Problem in Tight Gas Sands
【24h】

Performance Comparison of Novel Chemical Agents for MitigatingWater-Blocking Problem in Tight Gas Sands

机译：新型化学试剂的性能比较紧密天然气砂中的缓解水分堵塞问题

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Water-blocking can be a serious problem,causing a low gas production rate after hydraulic fracturing;a result of the strong capillarity in the tight sandstone reservoir aggravating the spontaneous imbibition.Fortunately,chemicals added to the fracturing fluids can alter the surface properties and thus prevent orreduce the water-blocking issue.We designed a spontaneous imbibition experiment to explore the possibilityof using novel chemicals to both mitigate the spontaneous imbibition of water into the tight gas cores andmeasure the surface tensions between the air and chemical solutions.A diverse group of chemical specieshas been experimentally examined in this study,including a cationic surfactant(C12TAB),two anionicsurfactants(O242 and O342),an ionic liquid(BMMIM BF4),a high pH solution(NaBO2),two nanofluids(Al2O3 and SiO2),and a series of house-made deep eutectic solvents(DES3-7,9,11,and 14).Experimentalresults indicate that the anionic surfactants(O242 and O342)contribute to low surface tensions,but cannotease the water-blocking issue due to yielding a more water-wet surface.The high pH solution(NaBO2),ionic liquid(BMMIM BF-4),and brine(NaCl)significantly decrease the volume of water imbibed to thetight sand core through wettability alteration,and the cationic surfactant(C12TAB)leads to both surfacetension reduction and an oil-wet rock surface,helping to prevent water-blocking.The different types ofDESs and nanofluids exhibit distinctly different effects on expelling gas from the tight sand cores throughwater imbibition.This preliminary research will be useful in both selecting and utilizing proper chemicalsin fracturing fluids to mitigate water-blocking problems in tight gas sands.
机译：防水可能是一个严重的问题，导致水力压裂后的气体生产率低;砂岩储层中强烈毛细血管的结果加剧了自发性吸收。若要，添加到压裂液中的化学物质可以改变表面性质，从而改变表面性质防止防水问题。我们设计了自发性吸收实验，探讨了使用新型化学品的可能性，以减轻水中的自发性吸收到狭长的气体核心和化学溶液之间的表面张力。一组化学在本研究中经过实验检查的物种，包括阳离子表面活性剂（C12Tab），两个阴离子胶原（O242和O342），离子液体（Bmmim BF4），高pH溶液（NaBO 2），两个纳米流体（Al 2 O 3和SiO 2），以及一个房屋制造的深度共晶溶剂（DES3-7,9,11和14）。实验性结果表明阴离子表面活性剂（O242和O342）有助于低血量面部张力，但由于产生更多的水湿表面，因此不能缓解防水问题。高pH溶液（NaBO 2），离子液体（Bmmim BF-4）和盐水（NaCl）显着降低吸收的水量通过润湿性改变和阳离子表面活性剂（C12Tab）导致阳离子表面活性剂（C12Tab）导致水灭绝的岩石表面和油湿岩体，有助于防止水堵塞。不同类型的OFDES和纳米流体对从紧张的气体引发气体的明显不同的影响穿过水上的吸尘性吸收。本次初步研究将有用于选择和利用适当的化学素压裂液，以减轻狭小天然气砂中的防水问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号