鄂尔多斯盆地彬长地区长7段深水沉积特征及储层分布规律

发布时间：2018-04-13 03:10

  本文选题：彬长地区 + 长7段　； 参考：《成都理工大学》2017年硕士论文

【摘要】：鄂尔多斯盆地中生界石油资源量大,彬长地区上三叠统延长组烃源岩发育,储盖组合配套,故其具有广阔的勘探开发前景,因此明确长7段的沉积特征和储层分布规律对今后的油气勘探意义重大。论文通过对长7段野外露头和室内岩心观察,及其各小层的沉积微相特征、成岩相特征与储层质量进行了细致研究,取得以下认识:(1)长7段为一套以砂质碎屑流沉积为主、浊流沉积为辅深水重力流沉积体系。其砂质碎屑流砂体常以多期叠置形式形成厚层砂岩,为长7段的主力砂体。(2)长7段砂岩的微观非均质性强。不同类型的储层常规分析物性相似,微观特征差异较大,地层压力作用下常表现出截然不同的物性特征。(3)长7段储层砂岩的成岩作用类型和储层的成岩序列得到明确,并总结出5种典型的成岩相(强溶蚀成岩相,弱溶蚀成岩相,强压实成岩相,强钙质胶结成岩相,微裂缝成岩相)及其测井特征。(4)长7段储层发育主控因素得到明确,分别为岩石相,成岩相和裂缝。综上分析得出,研究区的有利区域主要在砂体发育且厚度大的部位,砂体连片发育,同时在成岩作用上主要是以溶蚀作用为主的区域。而局部的裂缝发育区,虽然其厚度可能较小,但是油气富集的“甜点”区域。
[Abstract]:The Mesozoic petroleum resources in Ordos Basin are large, the source rocks of Yanchang formation of Upper Triassic in Bingchang area are developed, and the reservoir cap assemblage is matched, so it has a broad prospect of exploration and development.Therefore, it is of great significance for oil and gas exploration to clarify the sedimentary characteristics and reservoir distribution of Chang7 formation.Based on the field outcrop and indoor core observation of Chang7 member, and the sedimentary microfacies, diagenetic facies and reservoir quality of each sublayer, this paper has obtained the following understanding that the Chang 7 formation is mainly composed of sandy clastic flow deposits.Turbidite deposition is a secondary depositional system of deep water gravity flow.The sand detrital flow sand body often forms thick sandstone in the form of multi-stage superposition, which is the main sand body of Chang 7 member, and the microcosmic heterogeneity of Chang 7 member sandstone is strong.The physical properties of different types of reservoirs are similar and the microscopic characteristics are different. Under the action of formation pressure, the diagenesis types and diagenetic sequences of reservoir sandstone in Chang 7 member of formation pressure are usually shown to be very different, and the diagenetic types of sandstone and diagenetic sequence of reservoirs are clearly defined under the action of formation pressure.Five typical diagenetic facies (strongly dissolved diagenetic facies, weakly dissolved diagenetic facies, strongly compacted diagenetic facies, strongly calcareous colloidal diagenetic facies, microfractured diagenetic facies) and their logging characteristics.They are rock facies, diagenetic facies and fracture.From the above analysis, it is concluded that the favorable area of the study area is mainly in the area where the sand body develops and the thickness of the sand body is large, the sand body is connected with the slice, and the diagenesis is mainly the area dominated by dissolution.The local fracture development area, although its thickness may be small, but oil and gas-rich "dessert" area.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

【参考文献】

中国期刊全文数据库 前10条

1 杨仁超;何治亮;邱桂强;金之钧;孙冬胜;金晓辉;;鄂尔多斯盆地南部晚三叠世重力流沉积体系[J];石油勘探与开发;2014年06期

2 李相博;刘化清;张忠义;袁效奇;完颜容;牛海青;廖建波;王菁;;深水块状砂岩碎屑流成因的直接证据:“泥包砾”结构——以鄂尔多斯盆地上三叠统延长组研究为例[J];沉积学报;2014年04期

3 鲜本忠;安思奇;施文华;;水下碎屑流沉积:深水沉积研究热点与进展[J];地质论评;2014年01期

4 Shanmugam G;;深水砂体成因研究新进展[J];石油勘探与开发;2013年03期

5 廖纪佳;朱筱敏;邓秀芹;孙勃;惠潇;;鄂尔多斯盆地陇东地区延长组重力流沉积特征及其模式[J];地学前缘;2013年02期

6 朱筱敏;邓秀芹;刘自亮;孙勃;廖纪佳;惠潇;;大型坳陷湖盆浅水辫状河三角洲沉积特征及模式:以鄂尔多斯盆地陇东地区延长组为例[J];地学前缘;2013年02期

7 刘自亮;朱筱敏;廖纪佳;陈杰;;鄂尔多斯盆地西南缘上三叠统延长组层序地层学与砂体成因研究[J];地学前缘;2013年02期

8 杨华;刘自亮;朱筱敏;邓秀芹;张忠义;齐亚林;;鄂尔多斯盆地西南缘上三叠统延长组物源与沉积体系特征[J];地学前缘;2013年02期

9 邹才能;杨智;崔景伟;朱如凯;侯连华;陶士振;袁选俊;吴松涛;林森虎;王岚;白斌;姚泾利;;页岩油形成机制、地质特征及发展对策[J];石油勘探与开发;2013年01期

10 杨华;李士祥;刘显阳;;鄂尔多斯盆地致密油、页岩油特征及资源潜力[J];石油学报;2013年01期

中国硕士学位论文全文数据库 前3条

1 樊婷婷;鄂尔多斯盆地南部上三叠统延长组储层成岩作用研究[D];西北大学;2008年

2 刘岩;鄂尔多斯盆地南部镇泾油田长8段储层特征研究[D];成都理工大学;2008年

3 丁晓琪;鄂尔多斯盆地镇原—泾川地区延长组长8-长6沉积体系、层序地层与储层评价[D];成都理工大学;2006年

，

本文编号：1742654