准噶尔盆地阜东斜坡侏罗系头屯河组储层特征及有利区预测

Reservoir characteristics and favorable areas prediction of Jurassic Toutunhe Formation in eastern Fukang slope, Junggar Basin

在薄片鉴定及物性资料统计的基础上,对阜东斜坡头屯河组砂岩的岩石学特征、储层物性特征及其主要控制因素进行了详细研究,结果表明该套砂岩剩余原生粒间孔隙发育,为有效的储集层,储层物性主要受控于沉积相和成岩作用等因素,其中压实作用和胶结作用是储层发育较为重要的控制因素。在分析储层特征及其与沉积相发育关系的基础上,以头屯河组3个亚段为编图单元编制沉积微相图和砂体等厚图,预测砂岩储层平面分布特征,并对有利储层发育区和远景区进行预测和评价,识别出5个具有较大勘探潜力的有利区块。

On the basis of slice identification and data statistics, this paper analyzed the lithology characteristics, physical properties and controlling factors of standstone of Toutunhe Formation in eastern Fukang slope, Junggar Basin. The result shows that residual primary intergranular pores developed well and are the effective reservoirs, and the reservoir properties are controlled by sedimentary microfacies and diagenesis. Among them, compaction and cementation are the most important factors. Based on the analysis of relationship between reservoirs and sedimentary faceies, the maps of mierofaeies and sand body thickness were made by making the three submembers of Toutunhe Formation as the mapping unit, and the distribution of standstone reservoir was predicted and evaluated. The favorable reservoir development area was predicted, and five favorable areas with ~reat potential were identified.