摘要
油田化学品在钻井完井、压裂酸化、调剖堵水、乳化降黏、油水分离等环节发挥关键作用,但低渗透、高温、高盐、极端pH及使用过程中温度、pH变化等苛刻油气藏环境,给应用于油田化学品的聚合物和表面活性剂的研发带来了严峻的挑战.引入磺酸基等抗温抗盐基团或增大驱油剂相对分子质量等传统方式已难以满足油田需求.该文介绍了温度敏感聚合物、pH敏感聚合物、磁响应聚合物、CO2敏感聚合物及表面活性剂、盐度敏感聚合物响应环境变化的刺激响应原理和性能;综述了 5 种刺激响应性材料在钻井完井、提高采收率、乳化破乳、压裂酸化、调剖堵水、油水分离等方向的应用,展望了刺激响应性材料在油气开采中的发展前景.
Abstract
Oilfield chemicals play a crucial role in drilling and completion,fracturing and acidizing,profile control and water plugging,emulsification and viscosity reduction,oil-water separation,etc.However,the harsh oil reservoir environment such as low permeability,high temperature,high salinity,extreme pH,and changes in temperature or pH has brought severe challenges to the research of polymers and surfactants used in oilfield chemicals.The traditional methods of introducing sulfonic groups to achieve temperature-resistant or salinity-resistant and increasing the relative molecular mass of oil displacement agents can no longer meet the oilfield needs.In this review,the principle and properties of temperature-sensitive polymers,pH-sensitive polymers,magnetic-responsive polymers,CO2-sensitive polymers and surfactants,and saline-sensitive polymers in response to environmental changes were introduced.The application of 5 types stimuli-responsive materials in drilling and completion,enhanced oil recovery,emulsification and demulsification,fracturing and acidizing,profile control and water plugging,oil-water separation and so on were summarized.Finally,the development prospect of stimuli-responsive materials in oil and gas production was discussed.
基金项目
国家自然科学基金项目(52204037)
国家自然科学基金项目(U19B2011)
黑龙江省重点研发计划项目(JD22A004)
2021年度中央支持地方高校改革发展基金优秀青年人才项目()
NETL
NSTL
万方数据