鄂尔多斯盆地富县地区延长组主要油层组储层特征

THE RESERVOIR CHARACTERISTICS OF YANCHANG GROUP IN FUXIAN REGION, ERDOS BASIN

谢正温 谢渊 王剑 王生朗 李春玉 李令喜 吕小理

Xie Zhengwen Xie Yuan Wang Jian Wang Shenglang Li Chunyu Li Lingxi Lü Xiaoli

西北大学地质系 西安710069 2. 成都地质矿产研究所沉积与能源地质研究室 成都610082 3. 中原石油勘探局 河南濮阳457001

Department of Geology, Northwest University, Xi'an, Shaanxi 710069, China 2. Lab of Deposition and Energy Geology, Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610082, China 3. Zhongyuan Petroleum Exploration Bureau, Puyang, Henan 457001, China

富县是鄂尔多斯盆地东南部延长组油气勘探程度相对较低的一个地区,储层问题是制约该区延长组油气勘探的关键。在前人工作的基础上,利用露头、岩心、测井及多种微观分析资料对富县地区延长组储集砂体沉积成因及其展布、储层岩石学特征、储层孔隙结构及物性特征等进行系统研究得出,该区延长组主要为典型的特低孔渗致密储层,长2,长6,长8是延长组储层相对较为发育的3个主要油层组。

Fuxian County is an area where the degree of exploration for oil and gas in Yanchang Group in the southeast of Erdos Basin is relatively low.Reservoir is a key problem that limit the petroleum exploration in Yanchang Group in this area.Based on the researches of predecessors,the depositional genesis and distribution of reservoir sands as well as the petrologic characteristics,the pore texture and the physical properties of the main Yanchang Group oil reservoirs were studied by using the data of outcrop,core and logging.The result shows that Yanchang Group in this area is a typical tight reservoir with extra-low porosity and permeability.Chang 2,Chang 6 and Chang 8 are three favourable oil-bearing horizons developing in Yanchang Group in this area.

国家“973”项目(2003CB214602)

https://doi.org/10.11781/sysydz200506575