鄂尔多斯盆地吴定地区长7致密油富集规律研究  

Research on Regularity of the Enrichment of Chang 7 Tight Oil in Wuding Area,Ordos Basin

作　　者：赵思远 贾自力 康胜松 柳朝阳[2] 李刚[2] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]延长油田股份有限公司勘探开发技术研究中心,陕西延安716000

出　　处：《延安大学学报（自然科学版）》2017年第1期65-69,共5页Journal of Yan'an University：Natural Science Edition

摘　　要：针对吴定地区长7致密油地质条件复杂,研究程度低等问题,利用测井、录井、地质资料等资料,对吴定地区长7致密油富集规律进行了研究。结果表明:广泛分布的成熟-高成熟(生油高峰)阶段优质烃源岩控制着油气的分布,相对较高的过剩压力为油气运移提供了动力,优势相下被致密砂、泥岩体遮挡的相对高孔、高渗砂体控制着油气聚集的部位。细分了三种成藏模式类型:油气直接聚集成藏,残余油聚集成藏和混合聚集成藏。提出了长7致密油富集有利区的预测标准,确定了10个有利区,估算含油面积325.1 km^2,估算地质储量9 111.7×10~4t,为吴定地区长7致密油的勘探开发提供了依据,对鄂尔多斯盆地致密油的勘探开发有一定指导作用。Aiming at the complex geological conditions and the low degree of research, the paper studied the enrich- ment law of Chang 7 tight oil in Wuding area by well logging, mud logging and geological data. The result showed that the distribution of oil and gas is controlled by the mature to high mature stage （ oil generation peak） of high quality source rocks;the relatively high excess pressure provides the impetus for the migration of oil and gas;under the dominant facies, relatively high pore, high permeability sandstone, which are blocked by dense sand and mudstone, control the accumulation of oil and gas. Three types of reservoirs are subdivided ： oil directly gathered accumulation,residual oil accumulation and mixed accumulation. It was proposed the prediction standard of Chang 7 dense oil enrichment favorable area, and 10 favorable areas were identified, the estimation oil -bearing area is 325. 1 km2 and the estimation of geological reserves is 9111.7× 10^4t. It provides the basis for the exploration and development of Chang 7 dense oil in Wuding area, and has a certain guiding effect on the exploration and development of dense oil in Ordos Basin.

关 键 词：鄂尔多斯盆地 吴定地区 长7油藏 富集规律 

分 类 号：TE122[石油与天然气工程—油气勘探]