应用热解气相色谱参数判别生油岩类型  

APPLICATION OF PYROLYSIS CHROMATOGRAMS TO SOURCE ROCK TYPE ANALYSIS

作　　者：张景龙[1] 黄正吉[1] 等 

机构地区：[1]海洋石油勘探开发研究中心，河北高碑店074010

出　　处：《中国海上油气（地质）》1994年第2期114-120,共7页China Offshore Oil and Gas(Geology)

摘　　要：选择热解气相色谱中的特定化合物nC7（正庚烷、烯烃）、nC8（正辛烷、烯烃）和甲苯，并计算相应的参数nC7+8/甲苯×2和甲苯／nC7，确定三类生油岩的划分界限为：Ⅰ型，nC7+8／，甲苯×2＞3.25，甲苯／nC7<0.25；Ⅱ型，nC7+8/甲苯×2=1.10～3.25，甲苯／nC7=0.5～0.8；Ⅲ型，nC7+8/甲苯×2＜1.10，甲苯／nC7>0.8。近百块次样品经过与元素分析、Rock-Eval分析结果对比，并实际应用于划分珠江口盆地生油岩类型，证实方法简便易行。Abundant informationable PY- GC data, such as nC7 (heptane, heptene), nC8 (octane, octence) ,tolune,nC7+8/2(tolune)and tolune/nC7. etc. , can be applied to source rock type determination. The classification criteria of three types of source rock are: type Ⅰ ,nC7+8/2(tolune)>3. 25, tolune/nC7<0. 25; type Ⅱ,nC7+8/2(tolune) = l. 10-3. 25, tolune/nC7 = 0. 5-0. 8; type Ⅲ ,nC7+8/2(tolune)<1. 0,tolune/nC7>0. 8.The source rock types analysized by PY- GC are basically in accordance with that determined by elements and Rock-Eval analysis for almost 100 samples analysized. This method is easy and appli- cable to classily the source rock types in the Peral River Mouth Basin.

关 键 词：应用 热解气相色谱参数 判别 生油岩 类型 甲苯/nC7 nC7+8/甲苯×2 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]