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柴达木盆地阿尔金山前东坪—牛东斜坡带早期勘探程度与认识程度均比较低,勘探没有取得突破。近2年在寻找源外大型斜坡岩性油气藏地质新认识的指导下,通过加强斜坡带岩性气藏成藏条件综合分析与评价,认为东坪—牛东斜坡带紧临侏罗系大型生烃凹陷,具有多套目的层系、有利储盖组合、持续发育的古隆起(古斜坡)、区域性不整合、油气疏导断裂等有利成藏条件,目前在低断隆部位的东坪1井基岩风化壳及路乐河组(E1+2)获得勘探突破,在高断阶部位的东坪3井下干柴沟组(E3)也获得工业气流,在牛东鼻隆牛1井侏罗系同样获得高产油气流,展示出整个东坪—牛东斜坡带天然气成藏条件优越,具有广阔的勘探前景。
The exploration and understanding of the former Dongping-Niundong slope belt in the Altun Mountains in the Qaidam Basin were relatively low, and exploration did not achieve a breakthrough. Guided by a new understanding of the geology of large-scale slope lithologic reservoirs in the past two years, through comprehensive analysis and evaluation of the reservoir forming conditions for lithologic gas reservoirs in slope areas, it is believed that the Dongping-Niu Dong slope zone is in close proximity to the large Jurassic Hydrocarbon-bearing depressions have multiple sets of target stratigraphy, favorable reservoir-cap assemblage, paleo-uplift (paleo-slope), regional unconformity, oil and gas drainage and fracture favorable accumulation conditions. At present, Dongping 1 Wellbore crust weathering crust and Lilehe Formation (E1 + 2) obtained exploration breakthrough, and industrial gas flow was also obtained in Ganchaigou Formation (E3) at Dongping 3 well in the high-grade part. Luo series also get high-yield oil and gas flow, showing that the entire Dongping - cattle East slope of natural gas accumulation conditions, with broad prospecting prospects.