图像粒度法和激光粒度法在长6油层中粒度检测方法适用性研究

研究碎屑沉积和碎屑岩的粒度大小和各种粒级的分布特征的方法称为粒度分析。粒度分析是判别沉积环境和水动力条件的重要物理标志,而且对碎屑岩系油气储层评价也极为重要3]。选取适合勘探区域内储层特征的粒度分析方法,方能更好地为油田勘探以及后续的开发生产提供更准确的信息。目前,长庆油田和延长油田在研究＂三低＂储层（低孔、低渗、低产）的物性时,实验室粒度分析主要依靠图像粒度法和激光粒度法。本文以鄂尔多斯盆地坪桥区北部为研究区块,就上述两种检测方法在陕北斜坡中部长6油层中的适应性展开讨论。

Study on Applicability of the Image Size Method and the Laser Particle Analysis Method in Particle Detection of Chang6 Reservoir

The grain size analysis is a method to study grain size and grain size distribution characteristics of elastic sedimentary and clasolite. The grain size analysis is very important physical sign to identify sedimentary environment and hydrodynamic conditions,it is also a key to evaluate the oil and gas reservoir. To select an appropriate grain size analysis method according to reservoir characteristics of the exploration area can provide more accurate information for the oilfield exploration and subsequent development and production. At present, Changqing oilfield and Yanchang oilfield use the image size analysis method and laser particle analysis method to study physical properties of＂three low＂ reservoir （low porosity, low permeability, low yield）. In this paper, taking the northern of Pingqiao area in Erdos basin as research area, adaptabilities of above two kinds of measure methods in particle detection of Chang6 reservoir were investigated.