铝酸盐水泥固井材料在稠油热采环境下的性能
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摘要
稠油热采井的固井水泥材料需经受300℃以上高温。模拟高温蒸汽吞吐热采作业环境,实验检测铝酸盐水泥材料的耐高温性能,包括高温养护前后水泥石的抗压强度、渗透率、孔隙度、孔径分布、矿物组分和微观形貌的变化情况。结果表明:在热采条件下,铝酸盐水泥石的力学性能变化较小,微观结构致密,高温稳定性和完整性良好。
During the development of offshore heavy oil wells,the cementing materials must withstand high temperatures above 300 degrees. The conventional Portland cement materials have poor resistance to high temperature,and integrity cannot be effectively guaranteed,which will affect the productivity of heavy oil wells. By simulating steam huff and puff conditions,the new type of aluminate cement material was evaluated at 315 degrees high temperature to test its integrity. The compressive strength,permeability,porosity,pore size distribution,mineral composition and microstructure of cement paste before and after high temperature were tested. The results show that the mechanical properties of the cement stone have little change,and the microstructure is compact. So the stability and integrity under the high temperature are good under the condition of thermal recovery.
During the development of offshore heavy oil wells,the cementing materials must withstand high temperatures above 300 degrees. The conventional Portland cement materials have poor resistance to high temperature,and integrity cannot be effectively guaranteed,which will affect the productivity of heavy oil wells. By simulating steam huff and puff conditions,the new type of aluminate cement material was evaluated at 315 degrees high temperature to test its integrity. The compressive strength,permeability,porosity,pore size distribution,mineral composition and microstructure of cement paste before and after high temperature were tested. The results show that the mechanical properties of the cement stone have little change,and the microstructure is compact. So the stability and integrity under the high temperature are good under the condition of thermal recovery.
引文
[1]李早元,郭小阳,杨远光,等.新型耐高温水泥用于热采井固井初探[J].西南石油学院学报,2001,23(4):29-32.
[2]武治强,李早元,程小伟,等.稠油热采井固井水泥石耐高温性能研究初探[C]∥2010年固井技术研讨会论文集.北京:石油工业出版社,2010:43-45.
[3]贾选红,刘玉.辽河油田稠油井套管损坏原因分析与治理措施[J].特种油气藏,2003,10(2):69-72.
[4]余雷,薄岷.辽河油田热采井套损防治新技术[J].石油勘探与开发,2005,32(1):116-118.
[5]王兆会,高德利.热采井套管损坏机理及控制技术研究进展[J].石油钻探技术,2003,31(5):46-48.
[6]王廷瑞,王新卯.五口热采井套管损坏原因分析[J].石油钻探技术,1995,23(1):18-20.
[7]李早元,伍鹏,吴东奎,等.稠油热采井固井用铝酸盐水泥浆体系的研究及应用[J].钻井液与完井液,2014,31(5):71-74.
[2]武治强,李早元,程小伟,等.稠油热采井固井水泥石耐高温性能研究初探[C]∥2010年固井技术研讨会论文集.北京:石油工业出版社,2010:43-45.
[3]贾选红,刘玉.辽河油田稠油井套管损坏原因分析与治理措施[J].特种油气藏,2003,10(2):69-72.
[4]余雷,薄岷.辽河油田热采井套损防治新技术[J].石油勘探与开发,2005,32(1):116-118.
[5]王兆会,高德利.热采井套管损坏机理及控制技术研究进展[J].石油钻探技术,2003,31(5):46-48.
[6]王廷瑞,王新卯.五口热采井套管损坏原因分析[J].石油钻探技术,1995,23(1):18-20.
[7]李早元,伍鹏,吴东奎,等.稠油热采井固井用铝酸盐水泥浆体系的研究及应用[J].钻井液与完井液,2014,31(5):71-74.