摘要
中国海油为快速发展天然气产业,提升天然气产量,逐步加大鄂尔多斯盆地和沁水盆地矿权区块勘探投入,区块内有利于形成致密气、煤层气和常规气等多种天然气类型,天然气资源量可达30000×10^(8)m^(3),在高丰度区和构造简单区已经探明地质储量7500×10^(8)m^(3)。基于资源潜力及品质、成藏条件、勘探技术的全面分析,适时提出了陆上万亿立方米天然气增储的发展战略,并明确了致密气—煤层气并举、多气种立体勘探的指导思想,确定了加快鄂尔多斯盆地东缘深层煤层气和致密气勘探、快速推动沁水盆地中浅层煤层气勘探的部署思路。通过加强勘探领域成藏富集规律和勘探技术攻关方向的综合分析,明确了今后一个时期的重点勘探方向。鄂尔多斯盆地东部区块具有煤系地层全油气系统有序共存特征,需开展煤系地层天然气全成藏系统勘探,夯实增储上产基础,聚焦致密气、深层煤层气,攻关薄层煤层气、奥陶系常规天然气和铝土岩气,通过勘探开发一体化、地质工程一体化推进多气种交互接替勘探,实现天然气全成藏系统勘探开发。在沁水盆地南部、北部,重点推进中浅层煤层气水平井体积压裂达产技术试验和推广应用,并与薄层煤层气形成互补式经济有效开发,推动沁水盆地煤层气的整体增储上产。上述重点领域的勘探部署将保障中国海油陆上万亿立方米大气区的增储实现和健康稳定发展。
In order to achieve the rapid development of natural gas industry and increase gas production,CNOOC has gradually increased exploration investment in mining rights areas in Ordos Basin and Qinshui Basin,in which there are multiple types of natural gas including tight gas,CBM,and conventional gas,with gas resources of up to 3×10^(12)m^(3)in the two basins and proven gas geological reserves of 7500×10^(8)m^(3)in highabundance and structurally simple zones.Based on a comprehensive analysis of resource potential and quality,gas accumulation conditions,and exploration technology,CNOOC has proposed a development strategy of increasing onshore natural gas reserves with a level of trillion cubic meters.The company has clarified the guiding ideology of simultaneous exploration of tight gas and CBM and stereoscopic exploration of multi type gas resources,and determined the deployment strategy of accelerating the exploration of deep CBM and tight gas in the eastern part of Ordos Basin and rapidly promoting the exploration of middle and shallow CBM in Qinshui Basin.Furthermore,the comprehensive analysis of exploration fields,gas accumulation and enrichment laws,and exploration technology research directions enables to clarify the key exploration orientations in the near future.The eastern Ordos Basin is characterized by orderly co-occurrence of full oil and gas system in coal measure strata.As a result,it is necessary to conduct exploration in the full gas accumulation system in coal measure strata,consolidate the material basis for increasing reserves and production,focus on tight gas and deep coalbed methane,research on CBM in thin coal seams,Ordovician conventional natural gas,and bauxite rock gas,and promote the simultaneous exploration and replacement of multi type gas resources by applying exploration and development integration and geology and engineering integration,so as to achieve the exploration and development of full gas accumulation system.In the northern and southern parts of Qinshui Basin,it is necessary to
作者
徐长贵
朱光辉
季洪泉
祝彦贺
孙强
Xu Changgui;Zhu Guanghui;Ji Hongquan;Zhu Yanhe;Sun Qiang(China National Offshore Oil Corporation;China United Coalbed Methane Co.,Ltd.;CNOOC Research Institute Co.,Ltd.)
出处
《中国石油勘探》
CAS
CSCD
北大核心
2024年第1期32-46,共15页
China Petroleum Exploration
基金
中国海洋石油集团有限公司“十四五”重大科技项目“陆上非常规天然气勘探开发关键技术”(KJGG-2022-1001)。
