现代地质2024，Vol.38Issue(2)：335-349,15.DOI:10.19657/j.geoscience.1000-8527.2023.069
准噶尔盆地南缘西段齐古组深层储层特征及物性控制因素
Deep Reservoir Characteristics and Control of Physical Properties of Qigu Formation in the Western Section of the Southern Margin of Junggar Basin
摘要
Abstract
The deep clastic reservoir of Qigu Formation in the western section of the southern margin of Junggar Basin has a great potential for oil and gas exploration.However,there is still a lack of systematic studies on its reservoir characteristics and control of physical properties,which seriously restricts the subsequent oil and gas exploration.With the combination of the relevant studies of regional burial history and paleogeothermal tempera-ture,this paper comprehensively utilized the data of casting thin sections,scanning electron microscopy,physi-cal properties,mercury intrusion and inclusions,and systematically studied the petrological characteristics,physical properties,diagenesis characteristics,and physical property control of the Qigu Formation reservoir.The results show that the Qigu Formation reservoir exhibits the petrological characteristics of low compositional maturity,high plastic debris content,and medium structural maturity.Although the buried depth of the reser-voir center is more than 3,500 m,the reservoir space is still dominated by the intergranular pores,with an aver-age porosity of 10.29％and an average permeability of 34.12×10-3 μm2.In general,it belongs to the catego-ry of low porosity and low permeability reservoirs with limited development of some medium-high porosity and permeability reservoirs.The diagenesis of the reservoir mainly includes compaction,cementation,and dissolu-tion,and the diagenesis intensity is relatively weak.The main body is at the early diagenesis(stage B)to mid-dle diagenesis(stage A),and it is characterized by medium compaction intensity,low cement content,and acid dissolution at the late stage.In particular,the characteristics of enriched quartz and feldspar,poor cut-tings,and good sorting are conducive to the preservation of reservoir physical properties.关键词
准噶尔盆地南缘/侏罗系/齐古组/储层特征/物性控制因素Key words
southern margin of Junggar Basin/Jurassic/Qigu Formation/reservoir characteristics/physical property control分类
能源科技引用本文复制引用
邓毅,高崇龙,王剑,刘明,孟元林,任影,刘可,王柯..准噶尔盆地南缘西段齐古组深层储层特征及物性控制因素[J].现代地质,2024,38(2):335-349,15.基金项目
国家自然科学基金青年基金项目(41902118) （41902118）
新疆维吾尔自治区自然科学基金青年基金项目(2022D01B141) （2022D01B141）
黑龙江省博士后基金面上项目(LBH-Z20045). （LBH-Z20045）
