利用含水层建造地下储气库

UNDERGROUND GAS STORAGE RESERVOIR CONSTRUCTED IN WATER-BEARING FORMATTON

地下储气库在燃气的开发和利用过程中担当重要角色 ,可以优化供气系统 ,满足天然气调峰、事故应急和战略储备 ,用作一种潜在的价格套利与贸易保值的工具等 ,具有其它储气设施无法比拟的优势。地下储气库调峰量占年用气量的 11%。建造地下储气库应当首选枯竭的油气藏 ,但对一些无此地质条件的地区来说 ,则应首先考虑利用地下含水层来建造储气库。尤其对“西气东输”工程所经过的长江三角洲地区来说 ,选择利用含水层储气方案是适宜的 ,从外国引进天然气 ,也必然会涉及到用含水层储气的问题。文章就如何利用地下含水层建造储气库的基本内容和研究方向进行系统。

Underground gas storage reservoir takes on heavy responsibilities in fuel gas development and utilization,such as optimizing gas supply system,gas peak shaving,meeting an urgent need for accident,strategic reserves and being taken as a means of potential price arbitrage and trade price guarantee,etc.,having many advantages which can't be compared with by the other gas storage facilities.The amount of gas peak shaving by underground gas storage reservoir accounts for 11 percent of annual gas consumption capacity.Depleted oil and gas reservoir should be first sought for constructing underground gas storage reservoir,in regard to the regions having no such a geological condition,however,the underground water-bearing formations should be first taken into account.Especially in regard to the Changjiang River delta regions through which the gas transmission line of the “West to East Natural Gas Transmission” engineering will pass,it is suitable to select the plan of storing natural gas by water-bearing formation;in addition,when the natural gas is imported from foreign countries,the problem of storing natural gas by water-bearing formation will be inevitably involved also.The basic substance and research orientation of constructing gas storage reservoir by underground water-bearing formation are demonstrated systematically and simply in the article.