声波测井技术在非常规致密油藏储层评价中的应用

本文应用声波测井技术,针对松辽盆地齐家-古龙地区,非常规致密油储层有效性评价方法进行研究,即评价可能的裂缝发育段、可能的含油层段和可压裂改造的层段等。针对研究区非常规致密油藏特征及勘探实践,采用声波时差等效深度法建立超压层识别方法,通过计算岩石脆性指数建立岩石易压裂性评价技术。该技术较好的解决了非常规致密油藏储层有效性评价的关键问题,在老井压裂改造和新钻水平井、大斜度井测井评价中发挥雷要作用,见到很好的应用效果。

The application of acoustic logging technology in the unconventional dense reservoir

The effectiveness evaluation method of unconventional dense reservoirs, including possible fracture sections, possible oil bearing zones and possible intervals that could be fractured and so on, in Qijia-Gulong area of Songliao Basin is studied with acoustic logging technique. Based on characteristics of the unconventional dense reservoirs and the exploration experience of the study area, an over-pressure formation identification technique is set up with acoustic time equivalent depth method, a rock compressibility evaluation technique is established with rock brittleness index calculation. Consequently, some critical issues of effectiveness evaluation of unconventional reservoir get a better solution, achieving good application effect in old fracturing wells and new horizontal or high angle wells.