陇东地区长_8~1低阻油层与高阻水层识别标准研究  

Standards for discernment of low-resistivity oil zones and high-resistivity water zones in L_8~1 Formation of the Longdong Area

作　　者：吴应忠[1,2] 段毅[1] 赵阳[1,2] 曹喜喜 苏维刚[3] 

机构地区：[1]甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]青海省地震局,青海西宁810001

出　　处：《特种油气藏》2017年第1期38-42,共5页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"热解煤层气的氢同位素主控因素及其成因的示踪研究"(41472121);"淡水湖泊环境沉积单体脂类生物标志化合物氢同位素组成特征及其成因机制研究"(41272125)

摘　　要：运用测井、录井、试油试采、分析测试等资料,对陇东地区长_8~1储层低阻油层与高阻水层的识别与差异性进行了系统研究。结果表明:相对于邻近常规水层,低阻油层电阻增大率小于3,高阻水层电阻增大率大于3。同时,分析了低阻油层与高阻水层岩性和物性方面的差异性。在此基础上,建立了油水层综合识别标准,明确了油水层识别方法。该研究为陇东地区长_8~1储层勘探及增储上产提供了理论依据。Systematic researches have been conducted for identification of and differences among low-resistivity oil zones and high-resistivity waler zones in L 8^-1 reservoir formations of the Longdong Area by using logging, well log- ging, well testing and lab analysis data. Research results show that compared with neighboring conventional water layers, inereases in resistivity of low-resistivity oil zones shall be less than 3, whereas those in high-resistivity wa- ter zones may be higher than 3. In addition, differences among lithologic and physieal properties of low-resistivity oil zone and high-resistivity water zone can be identified. On bases of such researches, standards for comprehensive discernment over oil/water layers have been eonstructed to highlight specific methods available for identification of sueh oil/water layers. Relevant researehes may provide reliable theoretical foundation for exploration and produetivity construction in L 8^1 reservoir formations of the Longdong Area.

关 键 词：识别标准 低阻油层 高阻水层 长8^1 陇东地区 

分 类 号：TE122.1[石油与天然气工程—油气勘探]