岩屑气的测定方法

CUTTING-GAS ANALYSIS

蒋梅先 陈伟钧

Jiang Meixian Chen Weijun

地质矿产部石油地质中心实验室

Central Laboratory of Petroleum Geology, Ministry of Geology and Mineral Resources

在天然气勘探中,利用残存在岩屑中的气体组份和含量分布判别气源岩的类型及演化程度等,具有重要意义。对于岩屑气的测定,我们自行设计研制了岩屑搅拌粉碎脱气装置,并利用HP-5880气相色谱仪进行了岩屑气定性定量测定方法的研究。

For analysing cutting-gas, the authors designed and set up a degassing apparatus that agitates and crushs cuttings. It is used together with HP-5880 GC for qualitative and quantitative determinations of cutting-gas. Through experiments under various conditions, the performance of the apparatus has bee a proved to be good for rock sample crushing and degassing. The method employed is reliable and the data obtained are comparable to each other.During experiments, optimum operation conditions were selected and determined: (1) grain size of rock sample. 2-8mm; (2) the amount of rock sample: 10-15g; (3) agitating medium: distilled water; (4)agitating time. 8 minutes; (5) top volume of degassing cylinder: 5-9ml; (6)balance time for diffusion. 5 minutes.

https://doi.org/10.11781/sysydz198603199