黄河北煤田及邻区煤层气赋存条件研究word格式论文.docxVIP

摘 要综合应用煤层气地质学、天然气地质学、煤田地质学、构造地质学、煤化学、地史 学等学科的理论和方法,利用钻井、测井、地质录井、岩芯分析、生产以及各项实验分析 等方面资料,对黄河北煤田及邻区进行了赋存条件分析。通过对研究区的煤岩有机相特征的研究,得出：煤岩主要为较好烃源岩,具有较好的 生油气潜力；分析了煤储层特征,结果表明：在垂直齐广断裂由南往北方向上,煤层埋深逐渐增大； 煤层总厚度先增大后减小至稳定。黄河北六个勘探区范围内,几乎包括各种煤类,但在黄 河北煤田的北部广大地区,及其相邻的阳谷—茌平煤田以气煤和气肥煤为主。煤储层非均 质性也是沿垂直齐广断裂由南往北方向上逐渐减弱。煤层具有较高的贮气能力。煤层气 含量在垂直齐广断裂方向上由南向北逐渐增大,且在其北部地区含量达到了甚至高出了 开发标准。阐述了煤层厚度、结构及宏观变化和煤阶对煤层气含量的影响,并深入探讨了煤层的 盖层、水文地质条件、构造条件、岩浆岩、上覆地层有效厚度对煤层气保存的影响。对研究区进行了选区评价和实际验证,从而确定黄河北煤田的深部及以北地区可作 为今后勘探开发的目标区。关键词：黄河北；煤层气；煤岩有机相；储层；评价ABSTRACTTheories just like coal-bed methane geology, natural gas geology, coal geology tectonics geology , and geo-history were synthetically used and means were used by well drilling, logging, geologic controlling, analysis of rock core, manufacturing along with various experimental analysis to analysis the occurrence conditions of Huanghebei coalfield and adjacent region.The organic facies are researched in the region, the result indicated: coal rock is mainly the better hydrocarbon source rock and has better latent capacity of producing oil and gas.Feature of reservoir was analyzed, the result indicated: from south to north of along qiguang fault, the depth of coal bed augments inch by inch; the coal bed thickness accretes at first and then decreases until steady. In the six exploration area of Huanghebei coalfield, all kinds of coal are included, but in the vast north of Huanghebei coalfield and the adjacent Yanggu-Chiping coal field mainly consist of QM and QFM. Coal reservoir heterogeneity also taper from south to north of along Qiguang fault. The coal bed has better capacity of storing gas. Coal seam gas content accrete from south to north of along Qi-Guang fault, even in the north of the area coal seam gas content extent or exceed the standard of exploration.Coal bed thickness, composition and macro-alteration, and the affection of coal rank to coal seam gas content were expounded. Also, the affection of capping formation, hydrologic geology conditi