胜利油区花沟气田非烃类气体成因研究  

ORIGIN STUDY OF THE NON HYDROCARBON GASES OF THE HUAGOU GAS FIELD IN THE SHENGLI PETROLEUM AREA

作　　者：彭晓波[1] 陈建渝[1] 曹忠祥[2] 项希勇[2] 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]胜利石油有限公司地质研究院,山东东营257015

出　　处：《地质科技情报》2003年第1期79-82,共4页Geological Science and Technology Information

基　　金：中国石油化工股份有限公司胜利油田有限公司项目

摘　　要：胜利油区花沟气田所含的气体中以 CO2 气体为主要组成 ,CO2 体积分数 φ(CO2 )高达 70 %以上 ,个别井中含有丰富的氮气和氦气 ;在气田的东部和北部为烃类气藏 ,显然这与东邻博兴生烃洼陷、西部火山活动强烈有着成因联系。对气田中 CO2 气体和稀有气体的同位素研究表明 ,δ(13 CCO2 )为 -8.3 0‰～ -3 .41‰ ,φ(He)大于 1% ,φ(3 He) /φ(4He)在 4.45× 10 -6～ 4.49× 10 -6间 ,证明其为岩浆—幔源成因 ;有利于形成 CO2 气藏的大地构造环境是地幔隆起和超壳断裂—岩浆活动带 ;该区 CO2 气藏正位于上新世 -中新世玄武岩分布区内 ,每一期岩浆的侵入和喷出就是一次成气期和可能的成藏期 ,上新世是该区最主要的非烃类气体的成藏期。Huagou gas field in the Shengli petroleum area has abundant CO 2 with the concentration more than 70%, and one well has rich N 2 and He. But there are hydrocarbon containing reservoirs in its eastern and northern parts.It is obvious that its origin is closely related to the source sag of its east neighbor,boxing and intense volcanism in the west. The isotopic researches of CO 2 and rare gases show that δ ( 13 C CO2 ) ranges from -8.30‰ to -3.41‰,with He concentration more than 1% and φ ( 3He)/ φ ( 4He) varying from 4.45×10 -6 to 4.49×10 -6 ,indicating the mantle derived magma origin.The favorable tectonic environment for the formation of CO 2 reservoir is mantle uplift and great fault magma activity zone.While the CO 2 reservoir in the Huagou gas field contains the zone of basalt of the Neocene. Each intrusion and eruption of magma is a period of non hydrocarbon gases formation and possible accumulation. Neocene is the most important period of non hydrocarbon gases formation in the Huagou gas field.

关 键 词：胜利油区 非烃类气藏 花沟气田 岩浆-幔源成因 岩浆活动 二氧化碳气藏 

分 类 号：P618.130.1[天文地球—矿床学] TE12[天文地球—地质学]