环氧渣油套漏治理剂的研制与应用
Development and application of epoxy plant residual oil as casting leakage treatment agent
邓俊辉 1陈文征 2郑伟 3胡煜 1刘靓 1陈立峰1
作者信息
- 1. 油气钻采工程湖北省重点实验室(长江大学),湖北 武汉 430100;长江大学 石油工程学院,油气钻完井技术国家工程研究中心,湖北 武汉 430100
- 2. 中国石油技术开发有限公司,北京 100028
- 3. 中海油研究总院有限责任公司,北京 100028
- 折叠
摘要
以环氧植物渣油和甲基六氢苯酐为原料,制备了套漏治理剂(CLTA).通过 FTIR、SEM 和金相显微镜对CLTA进行了表征,测试了CLTA的稳定性、流变性和力学性能,探讨了CLTA渗透性、封堵性及其固化机理和降解机理.结果表明,CLTA注入性能较好,固化时间可控,其适用温度上限为258℃,可用于<258℃油藏环境的封堵.在温度为100℃、矿化度为8×104 mg/L的模拟地层环境中,老化90 d后,CLTA的抗压强度为41.93 MPa,质量保留率为93.1%,表明制备的CLTA具有优异的长期稳定性,可满足储层的长效堵水需求.CLTA固化物的抗压强度和弹性模量分别为44.77 MPa和1.62 GPa,约为G级水泥的1.77倍和 12.5%,其破坏形变达到7.63%,而G级水泥仅为0.53%,表明CLTA在强度和弹塑性方面优于G级水泥.此外,CLTA的胶结强度为5.09 MPa.并且CLTA在80～140℃环境中,能在270 h内被降解剂完全降解.
Abstract
Casting leakage treatment agent(CLTA)was prepared from epoxy plant residual oil and methylhexahydrophthalic anhydride and characterized by FTIR,SEM and metalloscope.The thermal stability,rheological and mechanical properties of CLTA were further analyzed,followed by exploration on its permeability,plugging ability,solidification mechanism and degradation mechanism.The results showed that CLTA displayed good injection performance and controllable curing time.The CLTA showed an applicable temperature up to 258℃,indicating that CLTA could be used for plugging in reservoirs<258℃.In a simulated environment with a temperature of 100℃and a salinity of 8×104 mg/L,the CLTA exhibited a compressive strength of 41.93 MPa and a quality retention rate of 93.1%after 90 d of aging,which demonstrated that the CLTA obtained had excellent long-term stability and could meet the demand of long-term reservoir water plugging.Meanwhile,the compressive strength and elastic modulus of CLTA solidified product were 44.77 MPa and 1.62 GPa,respectively,about 1.77 times and 12.5%of those of G-grade cement.The failure deformation of CLTA was 7.63%,while that of G-grade cement was only 0.53%,proving that CLTA was superior to G-grade cement in strength and elastic-plasticity.In addition,CLTA showed a bonding strength of 5.09 MPa,and could be completely degraded by the depressant within 270 h at 80～140℃.
关键词
植物渣油/废弃物资源化利用/降解性/高强度/套漏治理剂/油田化学品Key words
plant residual oil/recycling of wastes/degradability/high strength/casing leakage treatment agent/oil field chemicals引用本文复制引用
基金项目
国家自然科学基金面上项目(52074038)
出版年
2024
NETL
NSTL
维普
万方数据