摘要
杭锦旗区块的钻井普遍有天然气产出,通过对烃源岩分布、对比天然气碳同位素以及区内构造特征研究,认为杭锦旗区块上古生界天然气δ13C1值均大于-36‰,是典型的过成熟气,区内浩绕召表现为异地天然气运移成藏的特征;而什股壕代表了原地+异地天然气混合成藏的特征。结合地质情况及构造特征得出不整合面是天然气聚集成藏的重要运移通道。
Natural gas output is a common phenomenon in drilling operation in Hangjinqi block. Based on the study of source rocks distribution, natural gas carbon isotopes and tectonic features of the block, it is considered that the natural gas of upper Paleozoic is the typical over-mature gas, with the value of 813C1 greater than -36 %. In the block, Hao-Rao-Zhao area is characterized with res- ervoir accumulation of remote natural gas while Shi-Gu-Hao area is characterized with mixed reservoir accumulation of original and remote natural gas. Combining geological conditions and tectonic features of the area, it is concluded that unconformity is the important migration channel for natural gas accumulation.
出处
《油气藏评价与开发》
2012年第3期12-16,共5页
Petroleum Reservoir Evaluation and Development
关键词
杭锦旗
烃源岩分布
碳同位素
成藏模式
混源
Hangjinqi, source rock distribution, carbon isotope, reservoir accumulation mode, mixed source
