济阳坳陷三合村洼陷稠油油藏的差异成藏过程

doi:10.3969/j.issn.1672-7703.2018.06.008

中国石油勘探 ›› 2018, Vol. 23 ›› Issue (6): 69-77.DOI: 10.3969/j.issn.1672-7703.2018.06.008

济阳坳陷三合村洼陷稠油油藏的差异成藏过程

高长海^1,2, 张新征³, 王兴谋⁴, 李豫源¹, 张云银⁴, 张嘉豪¹, 王健¹

1 中国石油大学(华东)地球科学与技术学院;
2 海洋国家实验室海洋矿产资源评价与探测技术功能实验室;
3 中国石化胜利石油工程有限公司地质录井公司;
4 中国石化胜利油田分公司物探研究院

收稿日期:2017-11-21 修回日期:2018-09-27 出版日期:2018-11-15 发布日期:2018-11-13
基金资助:
国家科技重大专项“渤海湾盆地深层油气地质与增储方向”（2016ZX05006-007），“大型地层油气藏油气源分析与输导体系研究”（2017ZX05001001-006）；山东省自然科学基金“碎屑岩不整合储层成岩胶结作用及其对储层物性的影响”（ZR2017MD028）；中国石油化工股份有限公司科技攻关项目“盆缘稠油与浅层气成生关系及勘探方法”（P15084）。

Differential hydrocarbon accumulation process of heavy oil reservoirs in Sanhecun sag of Jiyang depression

Gao Changhai^1,2, Zhang Xinzheng³, Wang Xingmou⁴, Li Yuyuan¹, Zhang Yunyin⁴, Zhang Jiahao¹, Wang Jian¹

1 School of Geosciences, China University of Petroleum (East China);
2 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology;
3 Geological Logging Company, Sinopec Shengli Engineering Corporation;
4 Geophysical Research Institute, Sinopec Shengli Oilfield Company

Received:2017-11-21 Revised:2018-09-27 Online:2018-11-15 Published:2018-11-13
Supported by:

摘要/Abstract

摘要： 渤海湾盆地济阳坳陷三合村洼陷古近系与新近系均发育大量稠油油藏，明确油气成因机制和成藏过程对下一步油气勘探具有重要意义。利用原油生物标志化合物特征,明确了稠油油藏的成因机制，结合构造演化史、埋藏史—热史、油气成藏期次等研究，恢复了稠油油藏的形成过程。结果表明，古近系与新近系稠油油藏具有“泾渭分明”的成因机制和运聚特征：古近系东营组沉积末期，渤南洼陷沙四段烃源岩生成的低熟原油通过古近系沙三段与前古近系之间的不整合输导层侧向运移至三合村洼陷，在古近系沙三段底部的地层超覆圈闭中聚集成藏，形成原生型稠油油藏；新近系馆上段—明化镇组沉积时期，渤南洼陷沙三段和沙四段烃源岩生成的成熟原油首先侧向运移至垦西断垒，进而通过垦西断层垂向运移至新近系馆陶组，最后通过馆陶组骨架砂体及断层的复合输导进入三合村洼陷，在馆陶组构造—岩性圈闭或地层超覆圈闭中聚集成藏，由于后期强烈的生物降解作用而形成次生型稠油油藏。开展稠油油藏与浅层气藏的联合勘探，可作为济阳坳陷浅层今后增储上产的勘探新领域。

关键词: 稠油油藏, 油源对比, 成因机制, 成藏期次, 油气运聚, 三合村洼陷

Abstract: As a number of heavy oil reservoirs have been discovered in Paleogene and Neogene of the Sanhecun sag, Jiyang depression, Bohai Bay Basin, it is of great significance for the future oil and gas exploration to figure out the hydrocarbon genetic mechanism and accumulation process in this area. Therefore, the tectonic evolution history, burial history, thermal evolution history and hydrocarbon accumulation stages were combined to reproduce the accumulation process of the heavy oil reservoirs. The results show that the heavy oil reservoirs of Paleogene and Neogene have completely different genetic mechanisms and accumulation processes. At the end of the sedimentary period of the Dongying Formation of the Paleogene, the low-mature crude oil from the source rock of the Shahejie-4 Member in the Bonan depression migrated laterally to Sanhecun sag along the unconformity transport layer between the Shahejie-3 Member of Paleogene and the Pre-Paleocene, then accumulated in the stratigraphic overlap traps of Shahejie-3 Member in Paleogene, forming the original heavy oil reservoirs. During the sedimentary period of the upper member of the Guantao Formation and the Minghuazhen Formation, the mature crude oil from the source rocks of the Shahejie-3 Member and Shahejie-4 Member in the Bonan depression migrated to the Kenxi fault horst first, then migrated vertically along Kenxi fault to the Guantao Formation of Neogene, and finally entered the Sanhecun sag through the skeleton sand bodies and faults of Guantao Formation and accumulated in the tectonic-lithologic traps or stratigraphic overlap traps of the Guantao Formation, which turned into secondary heavy oil reservoirs because of strong biodegradation in late stage. Joint exploration of heavy oil reservoir and shallow gas reservoir will be the new domain to increase reserves and production for Jiyang depression.

Key words: heavy oil reservoir, oil-source correlation, genetic mechanism, hydrocarbon accumulation stage, hydrocarbon migration and accumulation, Sanhecun sag

中图分类号:

高长海, 张新征, 王兴谋, 李豫源, 张云银, 张嘉豪, 王健. 济阳坳陷三合村洼陷稠油油藏的差异成藏过程[J]. 中国石油勘探, 2018, 23(6): 69-77.

Gao Changhai, Zhang Xinzheng, Wang Xingmou, Li Yuyuan, Zhang Yunyin, Zhang Jiahao, Wang Jian. Differential hydrocarbon accumulation process of heavy oil reservoirs in Sanhecun sag of Jiyang depression[J]. China Petroleum Exploration, 2018, 23(6): 69-77.

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济阳坳陷三合村洼陷稠油油藏的差异成藏过程

Differential hydrocarbon accumulation process of heavy oil reservoirs in Sanhecun sag of Jiyang depression

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