磷石膏作缓凝剂对油井水泥性能的影响
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摘要
利用工业废渣磷石膏替代天然石膏作油井水泥的缓凝剂,对不同熟料细度及不同磷石膏掺量对G级高抗油井水泥强度及抗硫酸盐侵蚀等性能的影响进行了研究。结果表明,水泥石强度随着油井水泥熟料细度的增加而增加,当油井水泥熟料的细度达到400m2/kg时,水泥石强度较高;随着磷石膏掺量的增加,水泥石强度呈现缓慢上升趋势,同时表明磷石膏替代天然石膏对水泥石强度影响不大,磷石膏替代天然石膏对高抗油井水泥的抗硫酸盐侵蚀性能未造成不良影响。
By using industrial scrap phosphogypsum instead of natural gypsum as retarder of oil-well cement,the influence of the dosage of phosphogypsum and the clinker fineness on the properties of the oil-well cement including compressive strength and sulphate resistance was studied in this paper.The results show that the compressive strength of cement block increases with the clinker fineness of the oil-well cement.When the fineness is above 400m2/kg,the strength of cement is relatively high.The compressive strength of cement block increases slowly with the content of phosphogypsum.Phosphogypsum instead of natural gypsum has little effect upon the compressive strength and the sulfate resistance properties of oil-well cement.
By using industrial scrap phosphogypsum instead of natural gypsum as retarder of oil-well cement,the influence of the dosage of phosphogypsum and the clinker fineness on the properties of the oil-well cement including compressive strength and sulphate resistance was studied in this paper.The results show that the compressive strength of cement block increases with the clinker fineness of the oil-well cement.When the fineness is above 400m2/kg,the strength of cement is relatively high.The compressive strength of cement block increases slowly with the content of phosphogypsum.Phosphogypsum instead of natural gypsum has little effect upon the compressive strength and the sulfate resistance properties of oil-well cement.
引文
[1]纪罗军,陈强.我国磷石膏资源化利用现状及发展前景综述[J],硫磷设计与粉体工程.2006(6):9-12.
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[3]杨淑珍.磷石膏改性及其作水泥缓凝剂研究[J].武汉理工大学学报.2003(1):50-53.
[4]聂海滨,安耀彬,刘翠薇.浅析我国G级高抗油井水泥的质量水平[J].水泥,2006(10):20-22.
[5]黄柏宗,谢承斌,蔡久能.深井固井的若干问题[J].钻井液与完井液,2003(8):15-21.
[6]齐奉忠,申瑞臣,刘英,等.国内固井技术现状问题及研究方向建议[J].钻采工艺,2004(2):7-11.
[7]蔡德信.API-G级油井水泥的矿物组成、比表面积和石膏掺入量对水泥稠化时间的影响[J].水泥技术,1991(11):24-28.
[2]杨荣华.石膏资源的综合利用现状及发展方向探讨[J].无机盐工业,2008,40(4):5-7.
[3]杨淑珍.磷石膏改性及其作水泥缓凝剂研究[J].武汉理工大学学报.2003(1):50-53.
[4]聂海滨,安耀彬,刘翠薇.浅析我国G级高抗油井水泥的质量水平[J].水泥,2006(10):20-22.
[5]黄柏宗,谢承斌,蔡久能.深井固井的若干问题[J].钻井液与完井液,2003(8):15-21.
[6]齐奉忠,申瑞臣,刘英,等.国内固井技术现状问题及研究方向建议[J].钻采工艺,2004(2):7-11.
[7]蔡德信.API-G级油井水泥的矿物组成、比表面积和石膏掺入量对水泥稠化时间的影响[J].水泥技术,1991(11):24-28.