四川盆地天然气C4～C7烃类指纹变化特征研究  

STUDY ON FINGERPRINT CHARACTER OF C_4-C_7 HYDROCARBONS IN NATURAL GAS OF THE SICHUAN BASIN

作　　者：王顺玉[1] 明巧[1] 贺祖义 黄羚[1] 

机构地区：[1]西南石油大学 [2]四川石油管理局勘探开发研究院

出　　处：《天然气工业》2006年第11期11-13,共3页Natural Gas Industry

基　　金：CNPC中青年创新基金项目;四川省重点学科建设基金项目(编号:SZD0414)的资助。

摘　　要：利用自制的天然气C3～C8烃浓缩器，对天然气中微量C4～C7单体烃进行了浓缩，以此为样品做了试验分析研究，进而阐述了四川盆地不同成因天然气C4～C7烃类指纹的分布特征，并得出以下结论：天然气中C4～C7烃类组成、分布特征不仅与生烃母质密切有关，而且受成熟度的控制，还与天然气的运移作用有关；不同母质来源、不同热演化阶段的天然气，C4～C7轻烃的组成也明显不同；同时，天然气在运移过程中，由于地层水的溶解作用，轻烃的组成也会受到影响。With self-made concentrator of C_3-C_8 hydrocarbon, micro C_4-C_7 free hydrocarbon in natural gas are concentrated and analyzed as experimental samples. Furthermore, the distribution characteristics of C_4-C_7 hydrocarbon fingerprints of the natural gas with different origins in the Sichuan Basin are expounded in this paper. The result shows: the compositions and distribution characteristics of C_4-C_7 hydrocarbons not only are closely related with hydrocarbon-generating parent materials, but also are controlled by theirs maturations and gas migrations; ②The compositions of C_4-C_7 hydrocarbons obviously varies with the parent material sources and thermal evolution stages; ③Moreover, owing to the solution of formation water, the compositions of C_4-C_7 hydrocarbons are affected during the migration of natural gas.

关 键 词：天然气 烃类 浓缩 指纹 特征 天然气形成 气源对比 实验室试验 

分 类 号：P618.13[天文地球—矿床学]