石油实验地质2016，Vol.38Issue(2)：162-169,8.DOI:10.11781/sysydz201602162
库车坳陷依南地区阿合组致密砂岩气储层特征与有利区带预测
Reservoir characteristics and favorable zone prediction of tight sandstone gas of the Ahe Formation in Yinan area, Kuqa Depression
摘要
Abstract
The Lower Jurassic Ahe Formation in Yinan area of the Kuqa Depression has favorable geologic condi⁃tions for the formation of tight sandstone gas reservoirs. Core, logging, drilling data, thin section observation, cast thin section identification, scanning electron microscope and the X⁃ray diffraction analysis of clay minerals showed that the tight sandstone reservoirs in the study area mainly originated from braided distributary channels and underwater distributary channels.Lithic sandstones are dominant with low compositional maturity and medium textural maturity. Fractures were well developed. The porosity is 4%-12%, averages 7.53%. The permeability is (0.1-100)×10-3μm2, average 12.33×10-3μm2. The samples with a permeability less than 1×10-3μm2 account for 75%, consistent with typical tight sandstone reservoirs. Reservoir formation is related to sedimentation, diagenesis and tectonism. Favorable facies belts and characteristic curves were applied to reconstruct sandstone thickness and fracture distribution, and to predict favorable exploration targets combined with tectonic background. The study showed that the area to the south of wells Yinan2, Yinan5 and Tuzi2 is a potential play for tight sandstone gas exploration, especially the area to the south and southwest of well Yinan2.关键词
致密砂岩储层/控制因素/有利区预测/阿合组/依南地区/库车坳陷/塔里木盆地Key words
tight sandstone reservoir/controlling factor/prediction of favorable zone/Ahe Formation/Yinan area/Kuqa Depression/Tarim Basin分类
能源科技引用本文复制引用
康海亮,林畅松,李洪辉,王开忠..库车坳陷依南地区阿合组致密砂岩气储层特征与有利区带预测[J].石油实验地质,2016,38(2):162-169,8.基金项目
国家自然科学基金重点项目“塔里木盆地古生代关键变革期的古构造古地理演变及油气聚集”（41130422）资助。 （）
