4.鄂尔多斯三交地区煤层气勘探开发潜力分析-李小军.doc

鄂尔多斯三交地区煤层气勘探开发潜力分析 李小军 王 峰1 吴雪飞1 陈彩红1 王 濮1 （1. 中石油煤层气有限责任公司　北京　100028） 摘要：三交地区位于鄂尔多斯盆地的东缘，是我国煤层气研究和勘探最早的地区之一。本文在分析总结前期工作的基础上，结合煤层气勘探开发的必威体育精装版进展，对该区煤层气勘探开发潜力进行了分析研究。研究认为三交地区煤层气富集特征明显，具有构造稳定简单，埋藏适中，煤层厚度较大，含气量较高，水文条件较好的特点；根据沉积环境、煤岩煤质、储层物性和含气性等地质条件，纵向上，可划分为山西组3/4/5号煤层气藏和太原组8/9号两套煤层气藏；初步评估该区资源丰富，勘探潜力巨大，煤层埋深在1000米以浅的煤层气资源量在1000亿m3以上，属于中浅埋深、中高丰度、大型煤层气田。煤层气试采情况显示，该区煤层气具有较好的可采性，预示着该区具有良好的煤层气开发前景，将成为中国煤层气勘探开发最具潜力、最为成功的地区之一。 关键词： 鄂尔多斯盆地东缘 三交地区 煤层气 成藏条件 勘探开发 潜力分析 Analyisis on the CBM ED Potential in Sanjiao Areas of Eastern Ordos Basin LI Xiaojun1,2 WANG Feng2 WU Xuefei2 CHEN Caihong2 WANG Pu2 (1. China University of Petroleum, Beijing 102249; 2. PetroChina Coalbed methane Co., Ltd. Beijing 100028) Abstract: Based on the preliminary work and combined with the latest progress of the Coalbed methane(CBM) exploration and development in Sanjiao area of eastern Ordos basin, this paper analyzed the CBM ED potential of this region. Studies show that there are rich CBM resources and it has large ED potential, with the features of stable and simple structure, medium buried depth, large coal seam thickness, high gas content, and better hydrological conditions; according to the geological conditions such as sedimentary environment, coal bed reservoir characteristics and so on, it can be divided into two sets of CBM reservoir vertically: coal seam 3/4/5 of Shanxi group and 8/9 of Taiyuan. Preliminary assessment of CBM resource in the area of 1000 meters shallow in depth is more than 100 billion m3. It belongs to medium-shallow depth, middle-high abundance, large-scale CBM field. CBM production test had shown that CBM in this area has a good recoverability, indicates that the area has good prospects for CBM development. It will become one of the most potential and most successful areas for CBM ED in china. Keywords: Ordos basin Sanjiao Area CBM Accumulation condition ED Potential analysis 0 引言 煤层气是一种新兴的能源，随着国际金融危机的蔓延，中国宏观经济增速趋缓，在新一轮大规模投资推动下，新能源产业借势崛起，中国煤层气产业迎来发展机遇