油气化探土壤样品解吸气技术实验研究  

Desorption technical experimental research on soil samples from oil and gas geochemical exploration

作　　者：卢丽[1] 黄欣[1] 李武[1] 高俊阳[1] 李兴强[1] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所,江苏无锡214126

出　　处：《物探与化探》2015年第6期1188-1192,共5页Geophysical and Geochemical Exploration

基　　金：国土资源部行业科研专项项目(201211060)

摘　　要：油气地球化学勘探中常用的顶空轻烃和物理吸附烃属于吸附态的烃类,两者在处理土壤样品时没有粉碎,使得吸附烃没有完全解吸。油气化探土壤样品解吸气技术就是利用自行研制的油气化探原位土壤样品保存与解吸装置,通过实验选择加饱和盐水或纯净水,改变样品量、样品解吸时间、负压条件,从而确定解吸气提取的最佳实验条件,建立油气化探土壤样品解吸气提取的方法。运用重复性对该方法进行评价,并选择富安油田试验区的一条已知地质剖面开展土壤中解吸烃指标的应用,研究结果表明,解吸气技术在油气藏上方具有较好的化探异常响应。With the self-developed devices for in-situ soil sample preservation and desorption in oil and gas geochemical exploration and through optimizing the detecting conditions by such means as using saturated salt water or pure water,changing the sample weight,desorbing time,and negative pressure conditions,the authors obtained the best condition of analyzing. According to the experimental results,the method for in-situ soil sample preservation and desorption in oil and gas geochemical exploration was established. Precision waas used to evaluate the method. The result shows that this method has high precision,as shown by its good performance in a known area.

关 键 词：油气化探 土壤样品 解吸 实验研究 

分 类 号：P632[天文地球—地质矿产勘探]