煤矿区煤层气地面井抽采技术适用性评价

发布时间：2018-05-18 10:41

本文选题：煤层气 + 地面井　；参考：《矿业安全与环保》2017年02期

【摘要】：在地面钻井过程中,由于准备工作不充分,对区域客观条件考察不明确等问题导致井身损毁或产能不达标的情况时有发生,为解决这一问题,对影响煤矿区煤层气地面井抽采技术适用性的因素进行了深入分析,得出其主要影响因素为:煤层气可采资源量(煤层厚度、含气面积、含气量),水文、地质条件(水动力条件、地质构造条件),井眼稳定性(煤体结构、地应力、化学因素),以及地形地貌特征。建立了以层次分析法+模糊综合评判法为基础的煤层气地面井适用性评价指标体系,并以寺河煤矿为例,对影响地面井抽采技术适用性的主要因素进行评判,实例验证了此种方法的可靠性,可为煤层气井上下联合抽采技术的适用性研究提供参考。
[Abstract]:In the course of surface drilling, due to inadequate preparation, problems such as unclear investigation of the objective conditions of the region lead to well damage or substandard productivity. In order to solve this problem, The factors influencing the applicability of surface extraction technology of coalbed methane in coal mine area are analyzed in depth. The main influencing factors are as follows: coal seam thickness, gas area, gas content, hydrology, and so on, the main influencing factors are: coal seam thickness, gas area, gas content and hydrology, and the main influencing factors are: coal seam thickness, gas area, gas content and hydrology. Geological conditions (hydrodynamic conditions, geological structural conditions, wellbore stability (coal structure, in-situ stress, chemical factors, and landform features). The evaluation index system of the applicability of CBM surface wells based on the AHP fuzzy comprehensive evaluation method is established. Taking Sihe Coal Mine as an example, the main factors affecting the applicability of the extraction technology of the surface wells are evaluated. The reliability of this method is verified by an example, and it can be used as a reference for the study of the applicability of the combined extraction technique for coalbed methane wells.
【作者单位】：煤炭科学技术研究院有限公司安全分院;煤炭资源高效开采和洁净利用国家重点实验室(煤炭科学研究总院);
【基金】：“十三五”国家科技重大专项(2016ZX05045002-006) 山西省自然科学基金项目(2013012007) 国家自然科学基金项目(51504137) 北京市自然科学基金项目(2164075)
【分类号】：TD712.62

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