二连盆地巴彦宝力格煤田褐煤煤层气资源潜力预测

发布时间：2018-06-02 11:30

本文选题：褐煤煤层气 + 主控因素　；参考：《煤炭科学技术》2017年10期

【摘要】：为了对低含气量、厚煤层的褐煤区进行煤层气勘探,圈定煤层气有利区,以煤层气勘探程度较低的二连盆地巴彦宝力格煤田为研究对象,通过煤岩工业分析、显微组分以及煤相、含气量、储层、构造、盖层及水文地质等方面的研究,对该煤田煤层气地质条件进行初步评价,预测勘探开发潜力区。研究表明:该煤田含煤地层为下白垩统巴彦花群赛罕塔拉组二岩段(K_1bs~2),腐质组反射率平均约0.299%,属于年轻褐煤,显微组分以腐质组为主,其中2煤、3煤厚度均较大,平均厚度分别为13.21 m和7.8 m,区域展布面积广,煤层结构简单,稳定性高,有利于煤层气的生成和保存,且直接盖层主要以厚层泥岩为主,最厚可达231.75 m,为煤层气提供了良好的封闭环境。综合煤层气成藏地质条件,圈定了巴彦宝力格煤田中部及东北部为褐煤煤层气勘探开发潜力区。
[Abstract]:In order to explore the coal bed gas exploration in the lignite area with low gas content and thick coal seam, the favorable area of coal bed gas is delineated. The research object is the Bayan Bao Li coal field, the two Lian basin, which has low exploration degree of coal bed gas. Through the analysis of the coal and rock industry, the microscopic components and the coal facies, the gas content, the reservoir, the structure, the cover layer and the hydrogeology, and so on, the coalfield is used in this coal field. The geological conditions of coal bed gas are preliminarily evaluated and the potential area for exploration and development is predicted. The study shows that the coal bearing strata are two rock sections of the lower Cretaceous Bayan flower group, Saihan Tara group two rock section (K_1bs~2), and the average reflectance of the humic group is about 0.299%, which belongs to the young brown coal and the microcomponents are mainly rotten, of which 2 coal and 3 coal are thick, the average thickness is respectively 13.21 m and 7.8 m have wide area distribution area, simple coal seam structure and high stability, which are beneficial to the formation and preservation of coal bed gas, and the direct cover is mainly thick mudstone and up to 231.75 m, which provides a good closed environment for coal bed gas. Comprehensive coalbed gas reservoir geological conditions are integrated, and the central and northeastern part of Bayan Bao Li coal field is delineated. The potential area of coal seam gas exploration and development of lignite.
【作者单位】：中国地质大学(北京)能源学院;煤层气开发利用国家工程中心煤储层实验室;
【基金】：国家自然科学基金重点资助项目(41530314);国家自然科学基金青年基金资助项目(41502157) 国家科技重大专项资助项目(2016ZX05041-002) 中国地质调查局油气资源调查中心资助项目(DD20160186-ZT1)
【分类号】：P618.13

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