异常高压对烃源岩成烃机理和油气运聚成藏的影响

卓勤功

doi:10.11781/sysydz200502169

异常高压对烃源岩成烃机理和油气运聚成藏的影响

doi: 10.11781/sysydz200502169

卓勤功^1,2

1.
石油大学, 山东, 东营, 257061
2. 中国石化, 胜利石油有限公司, 地质科学研究院, 山东, 东营, 257015

基金项目: 中国石油化工股份有限公司科研项目(P00018)

详细信息

作者简介:
卓勤功(1969- ),男(汉族),安徽萧县人,硕士、工程师,主要从事油气藏地质研究.

中图分类号: TE122.1
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- 被引次数: 0
出版历程
- 收稿日期: 2004-09-15
- 修回日期: 2005-02-10
- 刊出日期: 2005-03-25

EFFECTS OF ABNORMAL HIGH-PRESSURE ON THE HYDROCARBON-FORMING MECHANISM OF SOURCE ROCKS AND THE MIGRATION AND ACCUMULATION OF OIL AND GAS

Zhuo Qingong^1,2

1.
Petroleum University, Dongying, Shandong 257061, China
2. Research Institute of Geological Sciences, Shengli Oilfield, SINOPEC, Dongying, Shandong 257015, China

摘要

摘要: 流体异常高压控制着烃源岩的成烃机理和油气运聚成藏。超压促进沙四上亚段富硫烃源岩的生烃,而对贫硫的沙三中下亚段烃源岩生烃起抑制作用。因而沙四上亚段烃源岩早生、早排、成熟度较低,生成的油气充注凹陷外围及上部圈闭;沙三中下亚段烃源岩晚生、晚排、成熟度较高,生成的油气充注凹陷内部及下部圈闭。流体异常高压还能形成油气运聚的通道。所以,隐蔽输导体系的预测是今后岩性油气藏勘探的关键。
- 异常高压 /
- 成烃机理 /
- 运聚成藏 /
- 隐蔽输导体系 /
- 济阳坳陷
Abstract: The abnormal high-pressure of fluid controls the hydrocarbon-forming mechanism of source rocks and the migration and accumulation of oil and gas. Overpressure promoted the hydrocarbon generation of sulphur-rich source rocks in the upper sub-member of Es⁴; by contraries, it restrained the hydrocarbon generation of sulphur-poor source rocks in the middle and lower sub-members of Es³. Thus, in the former situation, hydrocarbon generated and discharged early, its maturity was lower, and it filled the peripheral and top traps of sags; in the latter, hydrocarbon generated and discharged late, its maturity was higher, and it filled the inner and lower traps of sags. The abnormal hygh-pressure of fluid also formed passages for hydrocarbon migration and accumulation. For the future, the forecast of subtle transportation systems is the key of exploration for lithological reservoirs.
- abnormal high-pressure /
- hydrocarbon-forming mechanism /
- migration and accumulation /
- subtle transportation system /
- the Jiyang Depression

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