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总口地区储集层中硬石膏分布规律及其储层伤害机理 被引量:2
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作者 冉福强 《石油天然气学报》 CAS CSCD 2012年第11X期208-210,共3页
总口地区储层水驱中易产生CaCO3水垢,造成油水井结垢。通过薄片鉴定、扫描电镜分析等手段,明确了该区硬石膏胶结物主要成斑块状、斑团块状或斑点状以基底式充填于颗粒间;该区硬石膏胶结物普遍分布,当注入流体与储层不配伍时,易产生... 总口地区储层水驱中易产生CaCO3水垢,造成油水井结垢。通过薄片鉴定、扫描电镜分析等手段,明确了该区硬石膏胶结物主要成斑块状、斑团块状或斑点状以基底式充填于颗粒间;该区硬石膏胶结物普遍分布,当注入流体与储层不配伍时,易产生CaCO3水垢,是造成油水井结垢的主要原因;该区硬石膏胶结物主要集中于局部地区、局部层段,油田生产开发应区别对待。 展开更多
关键词 总口地区 硬石膏 分布规律 储层伤害
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Cost estimation and control of colorectal cancer screening 被引量:2
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作者 Xinyuan Ma Qilong Li Wanli Ma 《The Chinese-German Journal of Clinical Oncology》 CAS 2012年第2期109-112,共4页
Objective:The aim of our study was to estimate the cost of colorectal cancer screening and to provide evidence for the cost control of colorectal cancer screening among general population in rural area of China.Method... Objective:The aim of our study was to estimate the cost of colorectal cancer screening and to provide evidence for the cost control of colorectal cancer screening among general population in rural area of China.Methods:We determined the net cost for colorectal cancer mass-screening in Jiashan County,and evaluated the cost-benefit and cost effectiveness.Results:The compliance rate of primary screening and intensive screening were 84.6% and 78.7%,respectively.In primary screening,the average cost for each individual was 27.2 yuan,and the average cost for identifying one high-risk individual was 180.5 yuan.The mean cost to diagnose one colorectal cancer patient was 42963.3 yuan.As for identification of adenoma,the average cost for each case was 4384.0 yuan.Based on the calculation,the average cost of reducing one colorectal cancer patient was 12768 yuan by conducting the mass-screening protocol.Conclusion:It was beneficial to do the cost-benefit analysis of colorectal cancer screening in area of high incidence.Based on the results of cost-benefit analysis,more efforts should be made to reduce the cost and to improve the efficiency of the colorectal cancer screening. 展开更多
关键词 colorectal cancer SCREENING high-risk group cost estimation cost-benefit analysis cost-effectiveness analysis
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