缝洞型碳酸盐岩油藏基岩块渗流特征初探  

DISCUSSION ON FLOW CHARACTERISTICTS FOR THE MATRIX ROCK OF CAVITY-FRACTURED CARBONATE OIL RESERVOIR

作　　者：程倩[1] 李阳[2] 熊伟[1] 薛惠[1] 胡志明[1] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廊坊065007 [2]中国石油化工股份有限公司,北京100728

出　　处：《大庆石油地质与开发》2010年第3期98-100,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家973项目,碳酸盐岩缝洞型油藏开发基础研究（200CB202404）资助.

摘　　要：塔河油田的下奥陶统缝洞型碳酸盐岩基岩块中的微裂缝是其主要储集空间和渗流通道。为了更好地认识此类油藏中基岩块的渗流特征，并建立流体动力学机理，选择渗透率0．1×10^-3～3．1×10^-3μm^2范围内的10块岩心进行单相渗流实验。分析了渗流特征并建立了适合于非达西渗流的非线性渗流模型。实验结果表明：塔河缝洞型碳酸盐岩油藏基岩块中的渗流为非达西渗流，存在明显的启动压力，且渗流速度与压力梯度成幂函数关系。The micro-fractures in matrix rock in Low Ordovician cavity-fractured carbonate are the main accumulation space and flow channels in Tahe Oilfield. In order to well understand the flow characteristics in this kind of rock and establish the hydrodynamics mechanism, single-phase flow experiment is conducted in chosen 10 cores with permeability of 0. 1×10^-3～3.1×10^-3μm^2. The flow characteristics are analyzed and the non-linear flow model adapting non-Darcy flow is established. The experiment results show that the flow in this kind of rock belongs to non-Darcy flow, the starting pressure is obvious and moreover there is power function relation between flow rate and pressure gradient.

关 键 词：非达西渗流 缝洞型油藏 碳酸盐岩 基岩块 启动压力 储渗特征 

分 类 号：TE312[石油与天然气工程—油气田开发工程]