發(fā)布時(shí)間：2018-02-23 05:49

  本文關(guān)鍵詞： 煤層氣 焦坪礦區(qū) 侏羅系煤層 賦存規(guī)律 資源潛力評價(jià)　出處：《西安科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：地面煤層氣開發(fā)具有資源利用、煤礦減災(zāi)和環(huán)境保護(hù)的重大意義。本文運(yùn)用煤層氣地質(zhì)學(xué)、煤田地質(zhì)學(xué)、構(gòu)造地質(zhì)學(xué)、煤化學(xué)等學(xué)科的理論和方法,在綜合分析煤層氣參數(shù)井鉆井、測井及其他測試資料的基礎(chǔ)上,重點(diǎn)評價(jià)了焦坪礦區(qū)煤層氣資源賦存規(guī)律及開發(fā)潛力。焦坪礦區(qū)含煤地層為中侏羅系的延安組,目標(biāo)煤層為4層,總厚度10~20m,一般14m左右。研究結(jié)果表明,本區(qū)地質(zhì)構(gòu)造簡單、地層傾角較小、煤級低、煤層厚度大,且煤層厚度受NE向構(gòu)造控制,顯示出背斜區(qū)薄,向斜區(qū)厚的特征。盡管煤的變質(zhì)程度較低,但仍具備一定的生氣和儲(chǔ)氣能力,煤對甲烷吸附能力較強(qiáng),隨著埋深的增加、含氣量增加規(guī)律明顯;煤級低,煤中孔隙、裂隙發(fā)育,煤層滲透性較好;經(jīng)估算,煤層氣資源量達(dá)15.36×108m3。從煤層含氣性和滲透性看,焦坪礦區(qū)具有一定的資源開發(fā)潛力,JPC-01的排采記錄證實(shí)了這一點(diǎn)。本次獲取了焦坪礦區(qū)系統(tǒng)的煤儲(chǔ)層參數(shù)與生產(chǎn)動(dòng)態(tài)數(shù)據(jù),通過JPC-01井生產(chǎn)數(shù)據(jù)模擬結(jié)果分析初步形成了適合該區(qū)煤儲(chǔ)層特點(diǎn)的排采工作制度。
[Abstract]:The exploitation of surface coalbed methane is of great significance in resource utilization, coal mine disaster reduction and environmental protection. In this paper, the theories and methods of coalbed methane geology, coalfield geology, tectonic geology and coal chemistry are used. On the basis of synthetically analyzing the drilling, logging and other test data of CBM parameter wells, the occurrence law and development potential of CBM resources in Jiaoping mining area are emphatically evaluated. The coal-bearing strata in Jiaoping mining area are Yanan formation of Middle Jurassic system. The target coal seam is composed of 4 layers with a total thickness of 10 ~ 20 m and a general length of about 14 m. The results show that the geological structure in this area is simple, the dip angle is small, the coal rank is low, the coal seam thickness is large, and the coal seam thickness is controlled by NE trending structure, which shows that the anticline is thin. Although the metamorphism degree of coal is low, it still has the ability of gas generation and gas storage, the adsorption ability of coal to methane is strong, the law of gas content increasing with the increase of buried depth is obvious, the coal grade is low, the pores and fissures in coal are developed, The coal bed permeability is good, and the coal bed methane resource is estimated to reach 15.36 脳 108m3.From the view of coal seam gas content and permeability, The discharge records of JPC-01 have proved this. The parameters of coal reservoir and production dynamic data of Jiaping mining area system are obtained. Based on the simulation results of production data of JPC-01 well, the drainage and production work system suitable for the characteristics of coal reservoir in this area has been preliminarily formed.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE37;P618.13

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