鄂尔多斯盆地南缘黄陇侏罗系黄陵矿区是我们国家典型的煤、油、气共生共采矿区。在开采煤炭资源过程中，受到煤层气和围岩油型气的双重威胁。黄陵二号矿作为高瓦斯矿井除瓦斯涌出量较大外，常伴有顶底板油型气异常涌出、渗油现象，严重影响矿井安全高效生产。为明确黄陵二号矿含油煤层中油气来源及分布规律，本文对213工作面瓦斯（煤型气及油型气）来源进行分析，论文以黄陵二号矿为研究区，利用X射线荧光光谱仪、电感耦合等离子体质谱仪等实验仪器对含煤地层岩样测试主量和微量元素，明确研究区油气源岩的沉积物源和古沉积环境；利用碳硫分析仪、岩石热解仪、色谱质谱联用仪，评价含煤岩层烃源岩生油潜力，通过油源精细化对比明确原油来源；采用配备有气相色谱的同位素比质谱仪，测定不同位置瓦斯碳氢同位素值，基于混源比例模型计算，明确213工作面瓦斯来源及赋存规律，判识瓦斯赋存富集区域，指导现场瓦斯预抽钻孔布置方案。

研究结果表明黄陵矿区延安组黄陵二号矿含煤地层油、气的古沉积环境表现为半干热-干热气候条件下具有较弱的水动力和较强的还原性（贫氧）的煤系地层。地层具备优质烃源岩，延安组岩层中油属于混合来源，包括本岩层烃源岩有机质自身转化和延长组原油充注作用下储存于煤层顶底板砂岩储层。

213工作面瓦斯与两个煤层（2^#和3^#）瓦斯成因类型总体相同，都属于生物成因气，213工作面有油型气的混入。213工作面瓦斯来源中，2^#煤层煤型气贡献占比为64.50%~100.00%，3^#煤层煤型气贡献占比为0%~35.48%，油型气贡献占比为0%~12.79%，油型气主要来源于2^#煤层顶板。

根据研究区煤层瓦斯赋存地质条件调研与油气溯源结果，对黄陵二号矿213工作划分瓦斯赋存富集区，并依据富集区分布规律与特征制定了2^#煤层、3^#煤层及顶底板瓦斯预抽方案，其中，2^#煤层及顶板作为主要煤型气预抽目标，3^#煤层及顶为辅。同时，根据213工作面瓦斯赋存富集区划分结果细化区域钻孔布置，对2^#煤层布置煤层顺层钻孔和顶底板瓦斯抽采钻孔，对3^#煤层进行扇形钻场布置和施工区域瓦斯治理专用巷，以提高213工作面瓦斯治理效果。现场预抽结果表明，划定的瓦斯赋存富集区有效提高了213工作面瓦斯抽采的精确性和高效性。

论文以实验研究、理论分析和现场实践为研究手段，分析了黄陵二号矿油气的母质来源和沉积环境、油气来源以及213工作面瓦斯赋存规律，对其瓦斯赋存富集区进行了圈定，并设计了该工作面瓦斯预抽方案。研究结果为黄陵二号含油煤层中油气溯源分析和瓦斯赋存富集区域圈定提供了理论和实践指导。

Huangling Mining Area of Huanglong Jurassic System at the southern margin of Ordos Basin is a typical symbiotic co-mining area of coal, oil and gas in China. In the process of mining coal resources, it is doubly threatened by coal bed methane and oil type gas in the surrounding rock. As a high gas mine, Huangling No.2 mine is often accompanied by abnormal gushing and oil seepage of oil-type gas from the top and bottom plates, which seriously affects the safe and efficient production of the mine, in addition to the large amount of gas gushing. In order to clarify the source and distribution pattern of oil and gas in the oil-bearing coal seam of Huangling No.2 mine, this paper analyzes the source of gas (coal-type gas and oil-type gas) in 213 working face. The paper takes Huangling No.2 mine as the study area, and uses experimental instruments such as X-ray fluorescence spectrometer and inductively coupled plasma mass spectrometer to test the main and trace elements in the rock samples of coal-bearing strata to clarify the sediment source and ancient deposition environment of oil and gas source rocks in the study area; uses Using carbon and sulfur analyzer, rock pyrolyzer and chromatography-mass spectrometer, we evaluate the oil generation potential of hydrocarbon source rocks in coal-bearing strata, and clarify the source of crude oil through oil source refinement comparison; using isotope ratio mass spectrometer equipped with gas chromatography, we determine the carbon and hydrogen isotope values of gas at different locations, and based on the calculation of mixed source ratio model, we clarify the source and distribution pattern of mixed gas at 213 working face, and identify the gas distribution enrichment area to guide the site The results of the study show that the gas pre-pumping drill holes in the Yellowing mine are not suitable for the mine.

The research results show that the paleodepositional environment of oil and gas in the coal-bearing strata of Huangling No.2 Mine of Yan'an Formation in Huangling Mine is a coal-bearing stratum with weak hydrodynamics and strong reducibility (oxygen-poor) under semi-dry-heat-dry-heat climate conditions. The formation has high-quality hydrocarbon source rocks, and the oil in the Yan'an Formation rock belongs to mixed sources, including the conversion of organic matter of hydrocarbon source rocks of this formation itself and the sandstone reservoir stored in the top and bottom plates of the coal seam under the action of crude oil filling of the Yan'an Formation.

The gas from the 213 working face and the two coal seams (2^# and 3^#) are generally of the same type of gas genesis, both belong to biogenic gas, and there is oil type gas mixed in the 213 working face. 64.50%~100.00% of the gas from the 213 working face is contributed by coal type gas from the 2^# coal seam, 0%~35.48% from coal type gas from the 3^# coal seam, and 0%~12.79% from oil type gas., and the oil-based gas mainly comes from the top of the #2 coal seam.

According to the research on the geological conditions of coal seam gas distribution in the study area and the results of oil and gas tracing, the 213 workings of Huangling No.2 mine were divided into gas distribution enrichment areas, and the gas pre-pumping plan for 2^# coal seam, 3^# coal seam and top and bottom plates was formulated based on the distribution pattern and characteristics of the enrichment areas. At the same time, according to the results of the division of the gas-rich area on the 213 working face, the regional drilling arrangement was refined, with the coal seam cascade drilling and the top and bottom plate gas extraction drilling arranged for the 2^# coal seam, and the fan drilling field arrangement and the construction of regional gas management special alley for the 3^# coal seam, in order to improve the gas management effect on the 213 working face. The results of the pre-sumping show that the delineated gas-rich areas effectively improved the accuracy and efficiency of gas extraction at the 213 working face.

Using experimental research, theoretical analysis and field practice as research methods, The parent material and depositional environment of the oil and gas in the Huangling No.2 mine, the source of oil and gas and the gas accumulation pattern of the 213 working face were analysed, the gas accumulation enrichment area was traced and a gas pre-pumping plan for the working face was designed. The results of the study provide theoretical and practical guidance for the analysis of oil and gas traceability in the oil-bearing coal seam of Huangling No.2 and the tracing of gas-rich areas.

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