CAJ | 학술논문

为评价煤层气资源开发潜力,对鸡西盆地煤岩的煤质、显微组分、显微裂隙、等温吸附及压汞孔隙结构进行了分析测试,结合钻井资料、瓦斯解吸、瓦斯涌出量及煤与瓦斯突出的资料,研究了该区的煤储层地质及储层物性特征,并分析了煤层气资源的控气地质控制因素构造、水文及顶底板封盖性。平麻逆冲断裂带及其附近的挤压揉皱构造有利于煤层气赋存,敦密断裂为导气断裂,不利于煤层气富集。水文控气主要分为3类：水力运移逸散控气作用、水力封闭控气作用及水力封堵控气作用,其对煤层气的富集控制作用迥异。顶盖板封盖性研究表明,穆棱组上部巨厚泥岩对煤层气有着良好的封闭性。基于 GIS 的多层次模糊数学评价方法计算了鸡西盆地城子河组的煤层气资源量,预测了煤层气有利区分布。结果表明,鸡西盆地城子河组的煤层气资源总量为1334.52×108 m3,平均资源丰度为0.42×108 m3/km2。鸡西盆地北部坳陷的麻山矿鸡西东海黑台一线,以及南部坳陷的中心地带,是煤层气勘探开发的最有利区域。
위평개매층기자원개발잠력,대계서분지매암적매질、현미조분、현미렬극、등온흡부급압홍공극결구진행료분석측시,결합찬정자료、와사해흡、와사용출량급매여와사돌출적자료,연구료해구적매저층지질급저층물성특정,병분석료매층기자원적공기지질공제인소구조、수문급정저판봉개성。평마역충단렬대급기부근적제압유추구조유리우매층기부존,돈밀단렬위도기단렬,불리우매층기부집。수문공기주요분위3류：수력운이일산공기작용、수력봉폐공기작용급수력봉도공기작용,기대매층기적부집공제작용형이。정개판봉개성연구표명,목릉조상부거후니암대매층기유착량호적봉폐성。기우 GIS 적다층차모호수학평개방법계산료계서분지성자하조적매층기자원량,예측료매층기유리구분포。결과표명,계서분지성자하조적매층기자원총량위1334.52×108 m3,평균자원봉도위0.42×108 m3/km2。계서분지북부요함적마산광계서동해흑태일선,이급남부요함적중심지대,시매층기감탐개발적최유리구역。
To evaluate the development potential of the coalbed methane (CBM)in Jixi basin,a series of experiments (including coal macerals, microfractures, adsorption isotherm and mercury porosimetry analysis and so on )are conducted on the collected coal samples.The drilling data,gas desorption,coal and gas outburst data are integrated to study the geological and physical properties of the coal reservoirs in the area.The geological controlling factors for CBM gases include structure, hydrology,and the sealing nature of the roof and floor lithology.The Pingma thrust fault and its nearby compressive crumpled structures are favorable for CBM preservation while the Dunmi normal fault is conducive,hence is not favored for CBM enrichment.Hydrological controlling factors for CBM gases are divided into three main categories:the hydraulic migration,hydraulic seal and hydraulic blocking,their roles on CBM enrichment are different.Based on the research of the roof lithology,the upper Muleng thick mudstone has a good capability for CBM sealing. GIS-based multi-level fuzzy mathematical evaluation method is used to calculate the amount of the CBM resources in the Chengzihe Formation in Jixi basin and to predict favorable CBM targets.The total CBM resource of the Chengzihe Formation in Jixi basin is estimated at 1 334.52 × 10 8 m3 ,with an average resource concentration of 0.42 × 10 8 m3/km2 .The EW trending belt of the northern sag and the central area of the southern sag in Jixi basin are considered to be the most favorable areas for future CBM exploration and development.