渤海海域曹妃甸A构造带混积岩储层白云岩化成因机理分析

赵珂; 宋章强; 杜学斌; 叶茂松; 解习农; 徐伟

doi:10.11781/sysydz201802218

渤海海域曹妃甸A构造带混积岩储层白云岩化成因机理分析

doi: 10.11781/sysydz201802218

赵珂¹,
宋章强^2, ,,
杜学斌^1,3,
叶茂松^1,3,
解习农^1,3,
徐伟²

1.
中国地质大学海洋学院, 武汉 430074
2. 中海石油(中国)有限公司天津分公司, 天津 300452
3. 中国地质大学(武汉) 构造与油气资源教育部重点实验室, 武汉 430074

基金项目: 国家自然科学基金项目（41772111）和国家重点基础研究发展计划（973计划）项目（2017CB239102）资助。

详细信息

作者简介:
赵珂(1993-),男,硕士研究生,海洋科学专业。E-mail:158896398@qq.com。

通讯作者:
宋章强(1980-),男,高级工程师,从事石油地质研究。E-mail:songzhq@cnooc.com.cn。

中图分类号: TE122.221
计量
- 文章访问数: 1680
- HTML全文浏览量: 220
- PDF下载量: 268
- 被引次数: 0
出版历程
- 收稿日期: 2017-08-17
- 修回日期: 2018-01-25
- 刊出日期: 2018-03-28

Dolomitization genetic mechanism of carbonate-siliciclastic mixed rock reservoir in CFD-A Tectonic Belt, Bohai Sea

ZHAO Ke¹,
SONG Zhangqiang^{2
, ,},
DU Xuebin^1,3,
YE Maosong^1,3,
XIE Xinong^1,3,
XU Wei²

1.
College of Marine Science and Technology, China University of Geoscience(Wuhan), Wuhan, Hubei 430074, China
2. CNOOC Tianjin Company, Tianjin 300452, China
3. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences(Wuhan), Wuhan, Hubei 430074, China

摘要

摘要: 渤海海域曹妃甸A构造带混积岩储层主要是以生物成因碳酸盐组分为主的混积岩，多发生白云岩化。目前对该区白云岩化的成因机理研究不够，限制了对白云岩储层沉积和成岩过程的理解。通过对岩心与薄片的精细观察及描述，结合多项地球化学测试手段，对该区古近系沙河街组一、二段混积岩储层中白云岩化特征及成因机理进行研究，共识别出4种主要白云岩类型：泥晶白云岩、含生屑泥晶白云岩、生物碎屑白云岩和含砂屑生物碎屑白云岩。进一步分析发现，白云岩中碳、氧同位素均发生负偏，呈正相关关系，且氧同位素分布分散，变化大；微观照片显示只有生物碎屑及其环边胶结物发生了白云岩化，后期发育的连晶胶结和碎屑内部充填物没有被白云岩化。Mn/Fe、Sr/Ba等元素指标指示，研究区湖平面发生多次变动，导致构造带暴露遭受淡水淋滤。综合分析认为，混合水白云岩化为该区白云岩的主要成因。
- 成因机理 /
- 地球化学 /
- 储层 /
- 白云岩 /
- 沙河街组 /
- 曹妃甸A构造带 /
- 渤海海域
Abstract: The mixed rock is a rock that consists of a mixed deposition of siliciclastic and carbonate. It was dominated by biogenic carbonate in the CFD-A tectonic belt in the Bohai Sea where dolomitization was found. Research on the CFD-A tectonic belt was rarely reported, especially aiming at the genetic mechanism of dolomite reservoir. Based on the observation and identification of cores and rock slices, combined with a number of geochemical tests, the characteristics and genetic mechanism of dolomitization in mixed rocks in the first and second members of Shahejie Formation at the CFD-A tectonic belt were studied. Four dolomite types were identified:dolomicrite, bioclastic-containing dolomicrite, bioclastic dolomite and sand-containing bioclastic dolomite. Further analyses showed that negative bias and positive correlation were both found in carbon and oxygen stable isotopes. Dispersed distribution and large variation were also revealed in oxygen stable isotopes. Dolomitization was found only in bioclastic and its ring cement through microscopic photos, which did not occur in interlocking cementation and bioclast filling. Lake surface fluctuation can be revealed by Mn/Fe, Sr/Ba index, indicating that the tectonic belt has suffered from fresh water leaching because of exposure. Mixed water dolomitization is the dominated genetic mechanism of dolomites in the study area.
- genetic mechanism /
- geochemistry /
- reservoir /
- dolomite /
- Shahejie Formation /
- CFD-A tectonic belt /
- Bohai Sea

HTML全文

参考文献(18)

[1]	潘星,王海琦,潘晓青,等.湖相白云岩成因模式及其储集性[J].甘肃地质,2016,25(2):76-83. PAN Xing,WANG Haiqi,PAN Xiaoqing,et al.Genetic model and reservoir property of lacustrine dolomite[J].Gansu Geo-logy,2016,25(2):76-83.
[2]	MANGIONE A,LEWIS H,GEIGER S,et al.Combining basin modeling with high-resolution heat-flux simulations to investigate the key drivers for burial dolomitization in an offshore carbonate reservoir[J/OL].Petroleum Geoscience,2017.https://doi.org/10.1144/petgeo2016-024.
[3]	牛元哲,王骁睿.浅析中国湖相白云岩主要的成因模式和沉积环境[J].石油化工应用,2016,35(1):66-71. NIU Yuanzhe,WANG Xiaorui.A brief analysis introduction of lacustrine dolomite in China and its genesis model and depositional environment[J].Petrochemical Industry Application,2016,35(1):66-71.
[4]	黄成刚,袁剑英,吴梁宇,等.湖相白云岩成因模式及研究方法探讨[J].岩性油气藏,2016,28(2):7-15. HUANG Chenggang,YUAN Jianying,WU Liangyu,et al.Origin and research methods of lacustrine dolomite[J].Lithologic Reservoirs,2016,28(2):7-15.
[5]	BIEHL B C,REUNING L,SCHOENHERR J,et al.Impacts of hydrothermal dolomitization and thermochemical sulfate reduction on secondary porosity creation in deeply buried carbonates:A case study from the Lower Saxony Basin,northwest Germany[J].AAPG Bulletin,2016,100(4):597-621.
[6]	KACZMAREK S E,GREGG J M,BISH D L,et al.Dolomite,very high-magnesium calcite,and microbes-implications for the microbial model of dolomitization[C]//SEPM Special Publications Volume 109:Characterization and Modeling of Carbonates.Tulsa:SEPM,2017.
[7]	王海更,张风义,刘建华,等.曹妃甸2-1油田生屑云岩储层特征及主控因素[J].复杂油气藏,2014,7(2):13-15. WANG Haigeng,ZHANG Fengyi,LIU Jianhua,et al.Geological characteristics and its main controlling factors of bioclastic dolostone reservoir in CFD2-1 Oilfield[J].Complex Hydrocarbon Reservoirs,2014,7(2):13-15.
[8]	李建平,周心怀,吕丁友.渤海海域古近系三角洲沉积体系分布与演化规律[J].中国海上油气,2011,23(5):293-298. LI Jianping,ZHOU Xinhuai,LÜ Dingyou.Distribution and evolution of Paleogene delta systems in Bohai Sea[J].China Offshore Oil and Gas,2011,23(5):293-298.
[9]	余宏忠.渤中凹陷西斜坡碎屑锆石特征及物源定量示踪[J].特种油气藏,2014,21(6):42-46. YU Hongzhong.Clastic zircon characteristics and quantitative tracing of provenances in western slope of Bozhong Sag[J].Special Oil & Gas Reservoir,2014,21(6):42-46.
[10]	苏中堂.鄂尔多斯盆地古隆起周缘马家沟组白云岩成因及成岩系统研究[D].成都:成都理工大学,2011. SU Zhongtang.The study of dolomite genesis and diagenesis system of Majiagou Formation around Paleo-uplift,Ordos[D].Chengdu:Chengdu University of Technology,2011.
[11]	黄擎宇,刘伟,石书缘,等.塔中-巴麦地区下古生界不同结构类型白云岩元素地球化学特征[J].地球化学,2016,45(2):199-212. HUANG Qingyu,LIU Wei,SHI Shuyuan,et al.Trace-element geochemical characteristics of different textural types of Lower Paleozoic dolomites in the Tazhong-Bamai area[J].Geochi-mica,2016,45(2):199-212.
[12]	朱伟林.中国近海新生代含油气盆地古湖泊学与烃源条件[M].北京:地质出版社,2009. ZHU Weilin.Paleolimnology and source rock studies of Cenozoic hydrocarbon-bearing offshore basins in China[M].Beijing:Geological Publishing Hourse,2009.
[13]	胡作维.川东北地区三叠系飞仙关组白云岩的形成机制研究[D].成都:成都理工大学,2010. HU Zuowei.Dolomitization of the Triassic Feixianguan Formation,northeastern Sichuan Basin[D].Chengdu:Chengdu University of Technology,2010.
[14]	强子同,曾德銘,王兴志,等.川东北下三叠统飞仙关组鲕粒滩白云岩同位素地球化学特征[J].古地理学报,2012,14(1):13-20. QIANG Zitong,ZENG Deming,WANG Xingzhi,et al.Isotopic geochemical characteristics of oolitic bank dolostones in the Lower Triassic Feixianguan Formation in northeastern Sichuan Province[J].Journal of Palaeogeography,2012,14(1):13-20.
[15]	TUCKER M E,WRIGHT V P.碳酸盐岩沉积学[M].沈安江,译.北京:石油工业出版社,2015. TUCKER M E,WRIGHT V P.Carbonate sedimentology[M].SHEN Anjiang,trans.Beijing:Petroleum Industry Press,2015.
[16]	刘伟,黄擎宇,王坤,等.深埋藏阶段白云岩化作用及其对储层的影响:以塔里木盆地下古生界白云岩为例[J].天然气地球科学,2016,27(5):772-779. LIU Wei,HUANG Qingyu,WANG Kun,et al.Dolomization and influence on reservoir development in deep-burial stage:A case study of Lower Paleozoic in Tarim Basin[J].Natural Gas Geoscience,2016,27(5):772-779.
[17]	杜晨,张兵,张世涛,等.浅谈湖泊沉积环境演变中元素地球化学的应用及原理[J].地质与资源,2012,21(5):487-492. DU Chen,ZHANG Bing,ZHANG Shitao,et al.Application and principle of element geochemistry in the evolution of lake sedimentary environment[J].Geology and Resources,2012,21(5):487-492.
[18]	卿元华.QHD428E构造湖相碳酸盐岩有利储层特征及成因[D].成都:成都理工大学,2016. QING Yuanhua.Study on characteristics and origins of favorable lacustrine carbonate reservoir in QHD428E structure[D].Chengdu:Chengdu University of Technology,2016.