陆丰凹陷文昌组储层流体性质识别方法研究

Study on Identification Method of Reservoir Fluid Properties of Wenchang Formation in Lufeng Sunken

李义 周全 张伟

LI Yi ZHOU Quan ZHANG Wei

中海油田服务股份有限公司, 河北 三河 065201

China Oilfield Services Limited, Sanhe, Hebei 065201, China

鉴于南海东部陆丰地区深部储层电性与含油性关系复杂，特别是频繁出现的低对比度储层，这类储层因油、水层常规测井响应特征接近，导致流体性质判别困难，常用的判别方法及各类解释交会图版已难以达到准确识别流体性质的目的。为了解决该难点，该文通过结合测井及地质资料，发掘影响储层测井响应的敏感信息，并以此为基础提出了两种更适合本区的流体性质识别图版，经实践取得了较好的应用效果，为现场快速处理解释提供了更为方便准确的流体性质评价技术。

In view of the complex relationship between electrical and oiliness in deep reservoirs of Eastern South China Sea, especially the low-contrast reservoirs, which have the similar conventional response characteristics between the water and oil layer and make it difficult to distinguish fluid properties. However, the common discriminant methods and most kinds of interpretation cross plots are difficult to achieve the purpose of accurately identifying the fluid properties. To solve this kind of problem, this paper combines the logging and geological data to discover the sensitive information that affects the logging response of the reservoir. On the basis of this research, two kinds of fluid property identification charts which are more suitable for this area are established. Finally, good application results are obtained through practice, and more convenient and accurate fluid property evaluation techniques for rapid processing and interpretation on site are provided.

https://doi.org/10.3969/j.issn.1008-2336.2020.01.070