中国南方典型气(油)藏控藏模式探讨

NATURAL GAS MODELS CONTROLLED BY GRADED MULTI-FACTORS IN MARINE SEQUENCES OF SOUTH CHINA

徐思煌 马永生 梅廉夫 袁彩萍 郭彤楼

Xu Sihuang Ma Yongsheng Mei Lianfu Yuan Caiping Guo Tonglou

中国地质大学 资源学院, 武汉 430074 2. 中国石油化工股份有限公司 南方勘探开发分公司, 昆明 650200

China University of Geosciences, Wuhan, Hubei, 430074, China 2. Southern Exploration and Production Company, SINOPEC, Kunming, Yunnan 650200, China

中国南方海相地层经历了多期构造变动,油气藏大多属于次生油气藏。油气藏的改造与分布主要由各级控藏要素控制。一级控藏要素为成藏流体源,二级为成藏与改造期次,三级包括保存条件及圈闭类型等。基于南方二级控藏要素建立了10种二级控藏模式,其中原生烃原生聚集、二次生烃原生聚集、无机成因气原生聚集和混源多期次生聚集等4种已被勘探证实,分别以典型实例命名为"沔31井型"、"朱家墩型"、"黄桥型"和"四川型"。南方8个典型油气藏的三级控藏模式平面展布特征表明:"四川型"主要分布于上扬子区,"沔31井型"以江南隆起周缘为主,"朱家墩型"主要在中下扬子区,"黄桥型"的分布与张性构造有关。

Having multiple stages of tectonic events,most of marine petroleum reservoirs in South China belong to secondary petroleum reservoirs.The reformation and distribution of petroleum reservoirs were mainly controlled by graded pool-controlling factors.The first grade of pool-controlling factors were the pool fluid sources,the second grade were the periods of petroleum formation and reconstruction,and the third included preservation condition and trap types.Ten types of pool-controlling models were set up based on the first two grades of pool-controlling factors in South China.Four of them,including primary source primary accumulation,secondly source primary accumulation, inorganic source primary accumulation and mixed source secondary accumulation,have been confirmed by exploration,named as type Well Mian 31,type Zhujiadun,type Huangqiao,and type Sichuan by known cases.The distribution map of eight typical pools models based on first three grades of pool-controlling factors supports that type Sichuan distribute mainly in Upper Yangtze Block,type Well Mian 31 mainly in margin of Jiannan Uplift,type Zhujiadun in Middle and Lower Yangtze Block,and type Huangqiao mainly in tensional structural area.

湖北省油气重点实验室基金(YQ2006KF05)

https://doi.org/10.11781/sysydz200701019