气体快速监测系统的组建及其在漠河冻土区天然气水合物钻探工程MK-2孔中的应用

发布时间：2018-03-21 06:35

本文选题：天然气水合物　切入点：钻井泥浆脱气设备　出处：《地质学报》2017年09期 　论文类型：期刊论文

【摘要】：本文结合非动力型脱气器与动力型脱气器的优点,研制出一种适用于低流量、低流速等小型钻探工程的飞溅离心式钻井泥浆脱气设备,并组建一套陆域天然气水合物钻井气体的快速监测系统。此套系统中,钻井泥浆在脱气筒内自动采集气体并将气体样本通过导管引入实验室,通过阀切换、多柱分离、双检测器的气相色谱分析系统,可同时检测C_H__4、C_2H__6、C_2H_4、C_3H_8、C_3H_6、n-C_4H_(10)、i-C_4H_(10)、n-C_5H_(12)、i-C_5H_(12)、O_2、N_2、C_O2、CO等多种气体。其中,烃类气体的方法检出限为0.10~1.00μL/L,非烃气体的检出限为100μL/L~0.01%,方法精密度为1.65%~11.6%,样品分析周期约10min。该系统通过在黑龙江省漠河盆地开展的东北冻土区天然气水合物科学钻探工程MK-2孔的试运行,实现了钻井气体的在线快速监测,方法灵敏、稳定可靠,具有较好的精密度和较低的检出限,能够基本满足天然气水合物等气体钻探现场检测的需要。
[Abstract]:Combined with the advantages of non-power degassing device and dynamic degassing device, a spatter centrifugal drilling mud degassing equipment suitable for small drilling projects such as low flow rate and low velocity has been developed in this paper. In this system, the drilling mud automatically collects the gas in the degassing cylinder and introduces the gas sample into the laboratory through the conduit, the valve switches, and the multi-column separation is carried out. The gas chromatographic analysis system with double detectors can simultaneously detect all kinds of gases such as C3H6H8 / C3H8 / C3H8 / C3H8S / C3H8S / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C /. The detection limit of hydrocarbon gas is 0.10 ~ 1.00 渭 L / L / L, the detection limit of non-hydrocarbon gas is 100 渭 L / L / L ~ (0.01), the precision of the method is 1.65 ~ 11.6 and the sample analysis period is about 10 min. the system is drilled by natural gas hydrate in northeast permafrost region in Mohe Basin, Heilongjiang Province. The trial operation of the MK-2 hole, The method is sensitive, stable and reliable, has good precision and low detection limit, and can basically meet the need of gas hydrate drilling field detection.
【作者单位】：国家地质实验测试中心;中国地质调查局油气资源调查中心;新疆维吾尔自治区煤田地质局综合实验室;
【基金】：中国地质调查局地质调查项目(编号GZH201400303) 中国地质科学院基本科研业务费项目(编号YYWF201618)共同资助成果
【分类号】：P618.13;P634

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