科学钻探工程中的随钻实时流体分析
Real-time Fluid Analysis in the Scientific Drilling Project
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摘要: 随钻实时流体分析是科学钻探重要组成部分,已成为科学钻探的标准配置之一,在国内外多个科学钻探工程中实施,获得了许多重要科学认识。随钻实时流体分析主要是在线测定气体浓度,实时监测钻探工程及其对流体影响,提供大量可靠的、其他方法难以得到的地学参数,建立流体地球化学剖面,测定流体同位素组成,并开展流体变化、气体识别和异常研究,研究流体来源及与地质活动关系。本文介绍了随钻流体分析的应用现状和实例,已成为科学钻探中必需的子工程之一。初步归纳随钻流体分析中主要组分的变化规律。随着科学钻探研究对象范围的逐渐扩大,随钻流体分析的应用前景也将扩大,而且已有半商业的钻探工程采用该项工作,表明随钻流体分析的重要性和实际意义。文章提出,随钻流体分析配备的分析仪器、分析流程的长期稳定性、野外现场的可靠性需要不断改进。Abstract: Real-time fluid analysis has gradually developed and become the standard configuration used in many scientific drilling projects in China and abroad. Real-time fluid analysis is used mainly to determine on-line gas concentrations, monitor real-time drilling projects and their influence on fluid and to provide reliable geological parameters which are unattainable by other methods. Real-time fluid analysis can establish fluid geochemical profiles, determine isotopic composition, explore fluid change, identify gasses and any abnormality, and investigate the origin of fluid and its relation to geological activity. The applications and cases of real-time fluid analysis are introduced in this paper; this having become one of the required sub-projects of scientific drilling. The change of major composition determined by real-time fluid analysis system is summarized. The application of real-time fluid analysis would be incorporated into the research and development of scientific drilling which is usually requested by commercial projects. In addition, it is a fundamental necessity to constantly improve the long-term stability and reliability of analytical instruments and processes, particulary out in the field.
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