共查询到10条相似文献,搜索用时 31 毫秒
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聚乙烯醇(PVA)作为油井水泥降失水剂使用时,适用温度较低,难以满足高温固井的需求。通过 2-丙烯酰胺 -2- 甲基丙磺酸 (AMPS)、丙烯酰胺 (AM) 等单体,对 PVA1788 进行接枝改性,合成了一种油井水泥降失水剂——接枝改性聚乙烯醇。室内实验评价了该改性聚乙烯醇作为降失水剂使用的耐温性能、抗盐性能、流变性能、抗压强度及防气窜性能等。结果表明,加有改性 PVA 的水泥浆在 150 ℃时 API 失水可控制在 150 mL 以内;抗盐达 18%;改性PVA 明显改善了聚乙烯醇类降失水剂不抗盐的性能,稠化时间较原浆稍有延长,水泥石的抗压强度较原浆稍有提高,与其它外加剂配伍性良好,水泥浆具有很好的防气窜能力,综合性能能够满足150 ℃以下的中高温固井要求。 相似文献
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川庆物探公司川西经理部现有职工774人,组成6支物探作业队,其勘探足迹遍及川、渝、鄂、云、陕、甘、新疆、海南、内蒙古等地,享有“四川石油管理局红旗单位”、“四川省文明单位”、“全国模范职工小家”等美誉。 相似文献
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介绍了FS法精制技术在大庆分石化公司炼油厂的工业应用.结果表明,处理后的柴油各项指标均达到了国家标准的要求,该工艺具有投资少、流程简单、生产成本低的优点. 相似文献
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Chen Liqiong 《石油科学(英文版)》2009,6(4):383-388
Strata erosion is a widespread phenomenon in sedimentary basins.The generation,migration,and accumulation of hydrocarbon is influenced by the scale of erosion,so estimating the amount of erosion is essential in the analysis of oil and gas bearing basins.According to the geological features in the Subei Basin and the actual data,using the integrated method,we estimated the level of erosion at the unconformities caused by the Sanduo event.By using the mudstone interval transit time method and the vitrinite reflectance method on data from typical wells,it can be concluded that the Gaoyou,Jinhu,and Hongze depressions suffered strong strata erosion from the late Eocene to Oligocene,and the total strata erosion thickness was 300-1,100 m.Different tectonic units in the same depression have extremely uneven erosion intensity:the low convex regions have the maximum erosion thickness,amounting to 800-1,100 m;the slope regions have an erosion thickness of generally 600-800 m;the erosion thickness of the slope-hollow transition zone is 300-500 m.For the whole basin,we used the strata thickness trend analysis method combined with the interval transit time and vitrinite reflectance methods to estimate the erosion thickness in the Sanduo period.The results show that the most severe erosion of the Sanduo event in the Subei Basin is between 1,000 m to 1,200 m,mainly located in depressions around the Jianhu Uplift;the deep hollow area has the least erosion,generally about 300-600 m,and the erosion in the slope area is about 600-900 m.Compared with the northern part,the southern part has relatively little erosion.It is also proved that the Sanduo movement has heterogeneous intensity,and the western region has greater intensity than the eastern region. 相似文献
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彩色沥青混凝土路面的研究与应用可追溯到20世纪50年代,从欧美等国家开始研究,这种路面不仅可以与道路周围的建筑艺术更好地协调,而且还可以起到美化城市和诱导交通的作用,并且还能体现出一个国家或一个城市的特色和风格,提升整个城市的形象和功能,显示出现代化都市的气派和魅力.在这方面的探讨我国开始于20世纪80年代初,但在道路上应用尚少. 相似文献
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分子筛脱水装置在珠海天然气液化项目中的应用 总被引:3,自引:1,他引:2
介绍了广东珠海天然气液化项目中利用分子筛进行天然气深度脱水的工艺.该项目中面临的主要问题是天然气液化对脱水深度要求非常严格,同时又必须考虑到全厂三个系统间的气量平衡,分子筛的再生气量受限制.通过分析该项目的实际情况,对分子筛设计的主要工艺参数进行比较分析,确定了合理可行的脱水工艺方案. 相似文献