渤海湾盆地车镇凹陷南坡碳酸盐岩分布主控因素

林红梅

doi:10.11781/sysydz201606779

渤海湾盆地车镇凹陷南坡碳酸盐岩分布主控因素

doi: 10.11781/sysydz201606779

林红梅^1,2

1.
中国石油大学(华东) 地球科学与技术学院, 山东青岛 266580
2. 中国石化胜利油田分公司地质科学研究院, 山东东营 257015

基金项目: 国家重大专项“济阳坳陷油气富集机制与增储领域”（2011ZX05006-003）和中国石化股份公司项目（P15083）资助。

详细信息

作者简介:
林红梅(1969-),女,高级工程师,从事石油地质勘探研究。E-mail:sllinhm@126.com。

中图分类号: TE122.2
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出版历程
- 收稿日期: 2016-05-22
- 修回日期: 2016-10-11
- 刊出日期: 2016-11-28

Main controlling factors for carbonate rock distribution on the southern slope of Chezhen Sag, Bohai Bay Basin

Lin Hongmei^1,2

1.
College of Geoscience and Technology, China University of Petroleum, Qingdao, Shandong 266580, China
2. Research Institute of Petroleum Exploration and Development, SINOPEC Shengli Oilfield Company, Dongying, Shandong 257015, China

摘要

摘要: 运用录井、测井以及分析化验等资料，对渤海湾盆地车镇凹陷南坡开展了碳酸盐岩分布的研究。结果表明，该区碳酸盐岩集中发育在沙四上亚段，包括泥晶灰岩、生物灰岩、泥质灰岩、白云岩等类型；沙四上亚段沉积期呈“二洼夹一隆”的地貌格局，古地貌控制了碳酸盐岩的展布形态及厚度变化。多方法综合确定，研究区属于滨浅湖环境，碳酸盐岩发育的古水深为11~50 m，水深34 m最适合碳酸盐岩沉积；沙四上亚段沉积早期-晚期，古气候经历了干旱到潮湿的变化过程，气候的变化使膏盐岩展布范围逐渐缩小，碳酸盐岩展布范围逐渐扩大。在古地貌、古水深、古气候三者共同作用下，研究区从盆缘到洼陷中心，依次沉积碎屑岩、泥质灰岩、生物灰岩、泥晶灰岩、白云岩、膏盐岩、泥质灰岩以及灰质泥岩，据此建立了碳酸盐岩的沉积模式。
- 碳酸盐岩 /
- 主控因素 /
- 沙四段上亚段 /
- 车镇凹陷 /
- 渤海湾盆地
Abstract: The distribution of carbonate rocks on the southern slope of Chezhen Sag in Bohai Bay Basin was stu-died using well logging, drilling and testing data. Carbonate rocks mainly distribute in the upper section of the fourth member of Shahejie Formation, including micrite limestones, biolithite limestones, argillaceous limestones and dolomites. The study area had a landscape pattern of "two subsags and one uplift in the middle" during the deposition of the upper section of the fourth member of Shahejie Formation, which determined the distribution and thickness of carbonate rocks. The study area belonged to shore-shallow lake environment. Carbonate rocks developed at about 11-50 m depth, and most developed at 34 m. From the early to the late period of the deposition of the upper section of the fourth member of Shahejie Formation, paleoclimate changed from dry to humid, and the distribution range of gypsum rocks gradually narrowed while that of carbonate rocks expanded. With the combined function of ancient landscape,water depth and paleoclimate, clastic rocks, argillaceous limestones, biolimestones, micrites, dolomites, gypsum-salt rocks, argillaceous limestones and calcareous rocks were depo-sited from basin edge to center. A sedimentary model for the deposition of carbonate rocks was established.
- carbonate rock /
- main controlling factor /
- the upper section of the fourth member of Shahejie Formation /
- Chezhen Sag /
- Bohai Bay Basin

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