CAJ | 학술논문

根据野外露头地质调查、最新钻井及样品测试等基础资料，以富有机质页岩形成的地质背景及展布特征———页岩气聚集条件—勘探有利区预测为主线，对黔西北地区上奥陶统五峰组—下志留统龙马溪组页岩气成藏条件进行分析，并采用综合信息叠合法对黔西北地区有利区进行预测。研究发现，页岩气发育的富有机质页岩段主要位于五峰组和龙马溪组底部，具有分布面积广、厚度大、有机质含量高、有机质类型好等特点，且具有充足的储集空间和运移通道。现场解吸实验表明，该套富有机质页岩具有良好的含气性能。总体分析，该区域与北美典型页岩气盆地具有良好的地质对比性，具有良好的页岩气聚集条件，是页岩气勘探研究以及后期页岩气开发的重要领域。
근거야외로두지질조사、최신찬정급양품측시등기출자료，이부유궤질혈암형성적지질배경급전포특정———혈암기취집조건—감탐유리구예측위주선，대검서북지구상오도통오봉조—하지류통룡마계조혈암기성장조건진행분석，병채용종합신식첩합법대검서북지구유리구진행예측。연구발현，혈암기발육적부유궤질혈암단주요위우오봉조화룡마계조저부，구유분포면적엄、후도대、유궤질함량고、유궤질류형호등특점，차구유충족적저집공간화운이통도。현장해흡실험표명，해투부유궤질혈암구유량호적함기성능。총체분석，해구역여북미전형혈암기분지구유량호적지질대비성，구유량호적혈암기취집조건，시혈암기감탐연구이급후기혈암기개발적중요영역。
The paper primarily studied the geological background of organic rich shale and its distribution characteristics,reservoir forming conditions and potential favorable areas of shale gas reservoir development.The study started from basic data such as the field surface outcrops,underground core and laboratory test results,and by the analysis of the accumulation conditions of shale gas in Northwest Guizhou,and using comprehensive information method,the favorable areas were predicted.The results indicate that the organic rich shale is at the bottom of the Upper Ordovician Longmaxi Formation and Lower Silurian Wufeng Formation.The organic rich shale in the study area were characterized by wide distribution,great thickness,good organic type,high organic content, high organic thermal evolution degree and high hydrocarbon potentials.The shale is rich in brittle minerals,with great quantity of matrix micropore and cracks,and good reservoir conditions,which offered sufficient accumulated space and migration pathway for shale gas.The result of well site desorption test showed that the black shale all have high performance of gas adsorption.In a word,the tectonic evolution characteristics and geological conditions in this area are similar to the typical shale gas basins in America,and the study area is a favorable and prospective place for shale gas exploration,having lots of advantages for forming shale gas reservoir.