摘要
基于天然气组分、稳定碳同位素及氦同位素等地球化学资料,认为渤海海域秦南凹陷Q东营组凝析气藏内高含量CO2的成因类型为火山幔源型无机成因气。进一步综合应用流体包裹体分析和激光拉曼成分测试技术,对CO2的成藏期进行探讨,指出CO2与烃类应为同期充注的,且至少存在两期充注的历史,但其充注时间均晚于5.1Ma,具有典型的"多期充注,晚期成藏"特征,因此,应加强新近纪上新世以来的以断层活动性和火山岩浆活动为主要内容的构造精细研究,这将有助于深化对渤海海域CO2的分布和富集规律的认识。
The high contents CO2 within the condensate gas reservoir of the Q oil＆gas field dongying formation were identified as volcanic mantle-source inorganic gas, based on gas components, stable carbon isotope and helium isotope etc geochemical techniques. A further study on the stage of CO2 accumulation by integrated application of the fluid inclusion technique and Raman spectral techniques shows that CO2 and hydrocodone were charging synchronization, more than two phase of charge activities were recognized, both of which were earlier than 5.1 Ma and with late period charging characteristics. Therefore, fault and volcanic related tectonic activities should be paid more attention to, which helps to understand the distribution and the accumulation regularity of CO2 in Offshore Bohai.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第2期673-678,共6页
Journal of Central South University:Science and Technology
基金
国家科技重大专项(2011ZX05023-006-002)
关键词
CO2
成因类型
成藏期次
渤海海域
carbon dioxide
genetic type
pooling episode
Bohai Sea
作者简介
通信作者：田立新（1970-），男，天津人，博士，高级工程师，从事地球物理和勘探目标评价研究：电话：022—25809295：E-maihtianlx@cnooc．com．cn
