STRATEGIC SURVEY RESULTS OF SHALE OIL IN THE FIRST MEMBER OF QINGSHANKOU FORMATION, UPPER CRETACEOUS IN NORTHERN SONGLIAO BASIN
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摘要:
松辽盆地北部上白垩统青山口组一段页岩油资源丰富，以往的勘探目的层主要是泥页岩裂缝、泥页岩中夹的薄砂条和介形虫层，受目的层分布范围限制，页岩油勘探效果一直不理想.本次调查以盆地内广泛发育的泥页岩储层为重点，创新了陆相盆地泥页岩储层页岩油地质认识，形成了泥页岩储层页岩油勘查技术体系.部署实施的松页油1井、松页油2井和松页油3井的3口直井压后抽汲分别获得日产油3.22 m3、4.93 m3和3.46 m3的工业油流；松页油1HF井压后自喷获得日产14.37 m3高产工业油流，松页油2HF井压后抽汲获得10.06 m3/d高产工业油流.实现了松辽盆地北部页岩油战略调查的重大突破.
Abstract:The shale oil resources are abundant in the first member of Qingshankou Formation, Upper Cretaceous, in northern Songliao Basin. The previous exploration was targeted at shale fractures and interbedded thin sands and ostracod layers. Due to the limitation of distribution range of target layers, the shale oil exploration results have not been satisfactory. Focusing on the widely-developed shale reservoirs in the basin, the survey refreshes the geological understanding of shale oil in the shale reservoirs of continental basin, and forms the exploration technology system. The industrial oil flows of SYY1, SYY2 and SYY3 wells pumped after fracturing yield 3.22, 4.93 and 3.46 m3/d respectively, the flowing high-yield industrial oil run of 14.37 m3/d from SYY-1HF well and pumping oil run of 10.06 m3/d from SYY-2HF well after fracturing, achieving a major breakthrough in the strategic survey of shale oil in northern Songliao Basin.
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Key words:
- Songliao Basin /
- Qijia Sag /
- Gulong Sag /
- Sanzhao Sag /
- first member of Qingshankou Formation /
- shale reservoir /
- shale oil
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