鄂尔多斯盆地西南部Z区低阻油水层识别方法  

Identification method of oil and water layers with low resistance in Z block in southwest of Ordos basin

作　　者：黄东安 白晓路 杨琦 贾昱昕 董李红 彭丽娜[2] 

机构地区：[1]中国石油长庆油田分公司第十一采油厂,甘肃庆阳745000 [2]中国石化河南油田分公司第一采油厂

出　　处：《石油地质与工程》2017年第5期98-100,共3页Petroleum Geology and Engineering

摘　　要：随着近年来鄂尔多斯盆地西南部侏罗系油藏的规模开发,侏罗系油藏优质储量得到不断动用,而侏罗系低阻油藏成藏隐蔽,勘探开发经验少,油水层识别难度大等问题日趋突出。鄂尔多斯盆地西南部Z区延9油藏为典型的低阻油藏,分析表明,孔隙结构复杂、微孔率高、微孔隙中存在束缚水是导致油层低阻的主要原因,地层水矿化度高也降低了油层电阻率;对比分析了测井曲线形态法、砂层顶构造对比法、侵入因子与声波时差交会图版法、快速色谱录井识别等识别低阻油层方法,并提出了该区有利建产目标。With the increasing scale development of Jurassic reservoir in southwest of Ordos basin, high quality reserves of Jurassic reservoir were constantly produced, while the low resistance reservoirs were subtle reservoirs, there was little experience in development and exploration, oil or water layer identification was becoming in creasingly prominent. Yan-9 reservoir of Z block was a typical low resistance reservoir in southwest of Ordos basin. Analysis indicated that the pore structure was complex, the micropore rate was high and the water in the micropores was the main reason for the low resistance of the reservoir, the high degree of formation water mineralization also reduced the resistivity of the oil layer. Contrast analysis of the logging curve method, the sand layer roof structure comparison method, invasive factor and acoustic time difference intersection engraving method, fast chromatographic logging identification method in identifying the low resistance reservoir were carried out, and then favorable production targets were put forward.

关 键 词：鄂尔多斯盆地 低阻油藏 Z区 油水层识别 

分 类 号：P618.13[天文地球—矿床学]