阜康凹陷东环带侏罗系成藏条件分析及有利区预测

阜康凹陷是准噶尔盆地重要的生烃凹陷之一,主要发育四套烃源岩,两套储盖组合。其东部周边的凸起上都发现有油气藏,凹陷与凸起之间的斜坡带,作为油气运移的必经之路,近几年也不断有所发现。斜坡背景、鼻状构造与多起断裂匹配发育,具备形成岩性圈闭条件。通过成藏分析,初步认为该区油气具有"断裂通源,优质砂体控藏,沿梁聚集"的特点;基于构造沉积、成藏整体分析,指出了下步有利勘探区带。

Reservoir condition analysis of Jurassic System in the east band of Fukang depression and the favorable area prediction

The Fukang depression is one of the important hydrocarbon generating ones in the Junggar Basin.Four sets of source-rock and two sets of reservoir-caprock assemblages are developed.At bulges in the east margin are found with development of oil-gas reservoirs.Reservoirs are also found in recent years at slopes,which is always the passages of oil and gas,between the sag.Slope background,nose structure and multiple fractures are matched together to form structural traps.The analysis shows that oil and gas accumulation in the area is characterized by "faults connect the source rock,quality sand body controls reservoir and oil and gas accumulate along nose structure".Based on the structural sedimentation and reservoir condition analysis prospecting targets are pointed out.