摘要
通过大量样品测试结果并结合地质录井资料分析,对QY1井下二叠统龙吟组页岩有机碳含量与含气量的关系进行了研究,并探讨了影响因素。结果表明:龙吟组页岩有机碳含量低、含气量较高,有机碳含量与含气量呈弱负相关性,具特殊的相关性。分析认为:低盐度的沉积环境是造成有机碳含量低的原因,伊/蒙混层矿物是影响有机碳含量的因素,富含氮气是页岩含气量高的主要原因。
Some mud shale cores from the Lower Permian Longyin Formation in QY 1 well and some data from geological mud logging were analyzed in terms of a correlation of both organic carbon content and gas-bearing property as well as their influencing factors. Results show that for the shale, its organic carbon content is low whereas its gas- bearing property is high, so representing a weakly negative correlation. In addition, it's deemed that a sedimentary environment with low salinity is a factor affecting low content of organic carbon, illite/smectite compound mineral is another one influecing organic carbon content, and rich N_2 is the main one controlling high gas-bearing property.
出处
《天然气技术与经济》
2016年第5期15-18,81,共4页
Natural Gas Technology and Economy
基金
贵州省地勘基金重大专项"贵州省页岩气资源调查评价(2012GYYQ)"项目之子项目"黔西南地区页岩气资源调查评价(2012GYYQ-04)"资助
关键词
龙吟组
有机碳含量与含气量
弱负相关性
沉积环境和伊/蒙混层矿物
富N2
页岩
Longyin Formation
TOC and gas-bearing property
weak negative correlation
sedimentary environment
illite/smectite compound mineral
rich N2
mud shale
