烃源岩层中异常高压研究——以渤海湾盆地东营凹陷古近系为例

赵国欣

doi:10.11781/sysydz200804340

烃源岩层中异常高压研究——以渤海湾盆地东营凹陷古近系为例

doi: 10.11781/sysydz200804340

赵国欣^1,2

1.
浙江大学, 地球科学系, 杭州, 310027
2. 中国石油化工股份有限公司, 胜利油田分公司地质科学研究院, 山东, 东营, 257015

详细信息

作者简介:
赵国欣(1963- ),男,高级工程师,主要从事油田开发研究.E-mail:zhaogx@slof.com.

中图分类号: TE122.1
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- 被引次数: 0
出版历程
- 收稿日期: 2007-11-23
- 修回日期: 2008-06-13
- 刊出日期: 2008-07-28

STUDY OF THE ABNORMAL HIGH-PRESSURE IN HYDROCARBON SOURCE ROCKS-TAKING PALEOGENE IN THE DONGYING SAG, THE BOHAI BAY BASIN AS AN EXAMPLE

Zhao Guoxin^1,2

1.
Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China
2. Research Institute of Geological Sciences, Shengli Oil Field Branch Company, SINOPEC, Dongying, Shandong 257015, China

摘要

摘要: 异常高压对油气成藏具有重要作用。渤海湾盆地东营凹陷古近系沙三、沙四段烃源岩普遍存在异常高压,泥岩的欠压实作用和生烃作用是异常高压产生的主要因素,异常高压的高值区与暗色泥岩厚度大的地区有较好的对应关系。现今异常高压主要分布在2700~3500 m的深度范围,随着深度的增加,异常高压范围增大。应用异常高压研究成藏作用时,要考虑异常高压的时代性。烃源岩中现今异常高压对油藏的保存具有积极的作用,是未来油源灶;古异常高压对排烃是有效的,油气的主要富集区位于大规模生烃后的古异常低压区。
- 烃源岩 /
- 异常高压 /
- 油气藏 /
- 东营凹陷 /
- 济阳坳陷 /
- 渤海湾盆地
Abstract: The abnormal high-pressure is very important to oil and gas accumulation.There is abnormal high-pressure in the 3rd and 4th member of Shahejie Formation of Paleogene all over the Dongying Sag,the Bohai Bay Basin.The main factors that lead to the pressure are under-compaction and hydrocarbon generation in the source rocks.The overpressure area is well corresponding with the thickness of source rocks.The present abnormal high-pressure is mainly distributed at a depth range 2 700 m to 3 500 m,and the range becomes bigger with increasing of the buried depth.Times of abnormal high-pressure should be considered when applying abnormal high-pressure to hydrocarbon accumulation.The present abnormal high-pressure in the source rocks has an active effect on the saving of oil and gas and it is oil source kitchen in future.The ancient abnormal high-pressure took an active part in the hydrocarbon migration in the source rocks and there is the main accumulation area of oil and gas.The main oil-gas enriched zones are located in the abnormal high-pressure after hydrocarbon generation in large scale.
- hydrocarbon source rocks /
- abnormal high-pressure /
- oil and gas reservoir /
- the Dongying Sag /
- the Jiyang Depression /
- the Bohai Bay Basin

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