Quantitative evaluation methods and applications of tectonic fracture developed sand reservoir: A Cretaceous example from Kuqa foreland basin.
构造裂缝发育型砂岩储层定量评价方法及应用——以库车前陆盆地白垩系为例

Aiming at the tectonic fracture developed and deep buried tight sandstone reservoir, by using outcrop, cores, thin sections, physical property, palaeo-tectonic stress, well logging and testing data, etc., based on the multidisciplinary cross of structural geology, reservoir dynamic diagenesis geology, well logging, fractal and mathematical statistics, etc., the technical idea of 5 mixed research methods and 5 steps supported including outcrop structural fracture modeling, drilling structural fracture characterization, logging structural fracture fractal analysis, ancient compressive stress field recovery and the bottom line of reservoir depth prediction was founded. By an example of Cretaceous Bashijiqike Formation in Dabei 1 gas field of Kuqa depression in Tarim Basin, the fracture size, effectiveness and spatial distribution of sandstone reservoir of tectonic fracture developed type were semi-quantitatively and quantitatively characterized. This result provides a relatively reliable technical methodology for the rolling exploration and overall rating in Dabei 1 gas field, moreover it provides a theoretical basis for the research and exploration of fracture developed and deep buried tight sandstone reservoir in foreland basin.