甘肃窑街中侏罗世油页岩单体烃碳同位素分析对比研究

n-Alkanes is widely used in the study of geologic body, which occupies 50%-80% of the saturated hydrocarbons commonly. The biogenetic implication of these compounds hold a very important value for the evaluation of all source rock, so it is used as biomarker to backward the biogenetic source of deposit organic matter. In order to find the difference of the isotopic composition of different organic compounds before and after complexion the oil shale in Yaojie, Gansu sample was performed by 5 molecular sieve adsorptipon to study the variation of the isotope compositions of n-alkanes, isoalkanes and cyclanes. On the basis of the previous work, the mini-sized Soxhlet extraction set with a hot reflux device was adopted to enhance the recovery of samples and diminish the loss of light components in the tested samples.     

CAUBRATION METHOD IN ISOTOPIC CARBON ANALYSIS

A very simple basic equation for the comparator technique is derived for the determination of 13C/12C ratio in biological samples by proton induced gamma- ray emission. On the basis of this treatments a new series of experiments has been made at a 2×1.7 tandem accelerator that proved conclusion about the method.     

用主成分分析法确定防砂筛管的缝宽

以筛管完井的油井,筛管缝宽是决定防砂成功与否的关键因素,而各种防砂理论都是针对一种岩样而言,通过主成分分析方法对塔里木某油藏多个岩样进行分析,最终确定适合该油藏的合理缝宽。     

电解法制备高纯度墙^18O2

采用自行设计制造的石英玻璃电解装置，以重氧重水为原料，通过碱性介质电解法进行了^18O气体的制备，在原料重氧重水^18O的摩尔分数〉80％条件下，最终制得^18O气体中^18O2摩尔分数达63．66％，表明整个电解系统气密性良好。此外，制得的气体能够满足电子回旋共振离子源提供^18O重离子束的实验要求。     

电解法制备高纯度18O2

采用自行设计制造的石英玻璃电解装置,以重氧重水为原料,通过碱性介质电解法进行了18O气体的制备,在原料重氧重水18O的摩尔分数>80%条件下,最终制得18O气体中18O2摩尔分数达63.66%,表明整个电解系统气密性良好。此外,制得的气体能够满足电子回旋共振离子源提供18O重离子束的实验要求。     

氩离子注入模拟太阳风对月岩的作用

对玄武岩和斜长岩等多种岩石样品进行了低能、超高剂量氩离子注入。氩离子能量12 0keV ,注入剂量 5× 10 18 cm2 。用X射线荧光光谱仪分析了辐照样品和未辐照样品的表面元素组成 ;用分步加热法分析了注入气体释放模式及岩石对氩气的保留能力。初步探讨了岩石对氩气的保留能力和分步加热释气模式等问题